Hi readers! I hope you are doing great. We are learning about modern neural networks in deep learning, and in the previous lecture, we saw the capsule neural networks that work with the help of a group of neurons in the form of capsules. Today we will discuss the graph neural network in detail.
Graph neural networks are one of the most basic and trending networks, and a lot of research has been done on them. As a result, there are multiple types of GNNs, and the architecture of these networks is a little bit more complex than the other networks. We will start the discussion with the introduction of GNN.
The work on graphical neural networks started in the 2000s when researchers explored graph-based semi-supervised learning in the neural network. The advancements in the studies led to the invention of new neural networks that specifically deal with graphical information. The structure of GNN is highly influenced by the workings of convolutional neural networks. More research was done on the GNN when the simple CNN was not enough to present optimal results because of the complex structure of the data and its arbitrary size.
All neural networks have a specific pattern to deal with the data input. In graph neural networks, the information is processed in the form of graphs (details are in the next section). These can capture complex dependencies with the help of connected graphs. Let us learn about the graph in the neural network to understand its architecture.
A graph is a powerful representation of data in the form of a connected network of entities. It is a data structure that represents the complex relationship and interaction between the data. It consists of two parts:
Node
Edge
Let us understand both of these in detail.
Here, nodes are also known as vertices, and these are the entities or data points in the graph. Simple examples of nodes are people, places, and things. These are associated with the features or attributes that describe the node, and these are known as node features. These features vary according to the type of graphical network. For instance, in the social network, the node is the user profile and the node features include its age, nation, gender, interests, etc.
Edges are the connections between the nodes, and these are also known as the connections, links, or relationships of the nodes. Edges may be directional or unidirectional in nature, and these play a vital role in the connection of one node to the other. The unidirectional nodes represent the relationship of one node to the other, and the undirected edges represent the bidirectional relationship between the nodes.
Just like other neural networks, the GNN also relies on multiple layers. In GNN, each layer is responsible for getting information from the neighbor node. It follows the message-passing paradigm for the flow of information; therefore, the GNN consists of inherited relationships and interactions among the graphs. In addition to nodes and edges, here are some key features to understand the architecture of GNN.
The complex architecture of layers in the graph is responsible for the flow of information from node to node. The message-passing process is part of the information flow when every node interacts with each other to provide information, and as a result, the data is transformed into an informative message. The type of node is responsible for the particular information, and nodes are connected according to their node features.
mechanisms. The aggregation of the data is done through a weighted sum or even more complex mechanisms such as mean aggregation or attention-based aggregation.
The GNN follows the learnable parameters just like some other neural networks. These are the weights and biases that are learned during the processes in the GNN. The state of each node is updated based on these parameters. In GNN, the learnable parameters have two properties:
Since its introduction in the 2000s, continuous research and work have been done on the GNN. With the advent of research, there are multiple types of GNNs that are working in the market for particular tasks. Here are some important types of graphical neural networks:
The graph convolutional networks (GCN) are inspired by convolutional neural networks. These are the earliest and most widely used GNN variants. These networks can learn the data by applying the convolutions to the graph data. In this way, these can aggregate and update node representation by keeping track of their neighbor nodes.
These are inspired by recurrent neural networks and are also referred to as GRN. The basic use of these networks is in sequence modeling. These networks apply the recurrent operations to the graph data and learn features from it. These features are representative of the global structure.
The graph attention networks (GATs) introduce the attention mechanism in the GNNs. This mechanism is used to learn the weights of edges in the graph. This helps in the message passing because the nodes choose the relevant neighbors and it makes the overall working of the network easy. The GATs work perfectly in processes like node classifications and recommendations.
The graph isomorphism network was introduced in 2018, and it can produce the same output as the two isomorphic graphs. GINs focus on the structural information of graphs and apply premature invariant functions during the steps of message passing and node update. Each node represents its data, and the most likely connected nodes are aggregated to create a more powerful network.
GraphSAGE means graph sample and aggregated, which is a popular GNN architecture. It samples the local neighborhood of each node and aggregates its features. In this way, the detail of node data is easily represented, and as a result, scalability can be applied to large graphs. It makes graph learning tasks easy, such as the classification of nodes and link prediction.
The large collection of types of GNN architecture allows it to perform multiple tasks. Here are some important applications of GNN in various domains:
GNN has applications in social networks, where it can model relationships among network entities. As a result, it performs tasks such as link prediction, recommendation analysis, community detection, etc.
The GNN plays an informative role in the medical industry in branches like bioinformatics and drug discovery. It is used in the prediction of the molecular properties of new drugs, the protein-protein interaction in the body and drugs, the formulation of new drugs based on experimentation, etc.
The relationship between the graphs is a string in the GNNs, which makes it ideal for prediction and learning the interaction between the user and the items. Moreover, the graph structures are highly usable in the recommendation system of the items released for the users on different levels.
Hence, we have read the information about the graph neural networks. The basic unit of these networks is the graph, which has two parts nodes and edges. The relationship between different edges in the group is responsible for the functioning of GNN. We have seen the types of neural networks that are divided based on their mechanisms of working. In the end, we had an overview of the general applications of GNN. These are a little bit more complex neural networks as compared to other modern networks we have read in this series. In the next lecture, we will discuss another modern neural network.
Hey pupil! Welcome to the next lecture on modern neural networks. I hope you are doing great. In the previous lecture, we saw the EffcientNet neural network, which is a convolutional Neural Network (CNN), and its properties. Today, we are talking about another CNN network called the capsule neural network, or CapsNets. These networks were introduced to provide the capsulation in CNNs to provide better functionalities.
In this article, we will start with the introduction of the capsule neural network. After that, we will compare these with the traditional convolutional neural networks and learn some basic applications of these networks. So, let’s start learning.
Capsule neural networks are a type of artificial neural network that was introduced to overcome the limitations of CNNs. In 2017, these modern neural networks were designed by Geoffrey Hinton and his team working in the Google AI research center.
These are some of the most popular and searched neural networks because they deal with the inefficiency of CNN in recognizing the results when the input data has different orientations. The capsule Neural networks are made by getting inspiration from the visual cortex of the human brain to process information.
The capsule neural network is one of the most prominent deep learning architectures and is widely used in fields like computer vision for processes like image classification, object detection, and segmentation. If you know about convolutional neural networks, then you must know that they are relatively difficult to process and require a great deal of information to work properly. Hence, to make the neural network more powerful, different neural networks, such as capsule neural networks and EffiecnetNet, are introduced.
The neural networks are categorized in different ways on the basis of their arrangement of layers. Usually, the neural networks have the same structure but slightly different performance and other features. However, the workings of CapsNet are far more different from those of traditional neural networks; therefore, there is a need for a detailed study of structure and performance. Here are some key features of Capsule neural networks that make them different from other traditional neural networks:
The name clearly specifies the difference in the workings of this neural network. These are different because the basic building block of Capsnets is the capsule of the neuron. Unlike traditional neural networks, where the neurons are the basic building blocks, CapsNet has a group of neurons (capsule) as the basic building block. Hence, we define the capsule as:
A capsule in the Capsule neural network is the group of neurons that efficiently encodes the features of the images, such as position, orientation, and size.
These features are called the pose of the images and are important in the working of neural networks, especially when networks are specialized for image recognition and related fields.
The most prominent difference to discuss is the structure of the capsule neural network. The capsules are arranged in the form of a hierarchy, where each capsule is responsible for extracting information of a specific type at the given level of abstraction.
The traditional neural networks are arranged in the form of a flat hierarchy, which causes limitations in their working. Capsule neural networks have complex relationships among the features, and therefore, better results can be extracted from the calculations.
A main difference between traditional and capsule neural networks is the dynamic routing mechanism, which is the main power behind the success of this neural network. It is called dynamic routing because it determines the relationship between the adjacent layer and capsule. As a result, the details of the features in the image are effectively determined.
Dynamic routing is helpful in recognizing objects at varying points and angles because capsules reach a consensus on the representation and presence of the properties of the data entity. This is different from traditional neural networks, where the weights are assigned to every neuron, and as a result, these produce the results needed to extract the information.
The way CapsNets recognize the images is up to par because these not only identify the objects but can also identify the poses and angles of the images. In this way, they can recognize the images even if the orientation of the images changes. This is the basic working of the CapsNets.
On the other hand, traditional neural networks require a great deal of data to recognize the images at a certain point, and there are errors when the image alignment is changed. Hence, the CapsNets require less data and provide more efficiency with the help of pose estimation.
This feature helps to regenerate the responses with the novel viewpoint even if the images are deformed. Traditional neural networks are not able to explicitly model pose information. These require extensive data arguments and a large variety of information in the form of datasets.
The CapsNets are arranged in the form of capsules, which enhances the complexity of the network. No doubt, the results obtained are more efficient, but the complexity level of CapsNet is higher than that of traditional neural networks. The capsules are connected in multiple layers, and to deal with them, multiple iterations are required.
Dynamic routing is responsible for the transfer of the output of one capsule to the next capsule in the interconnected layer in a specific pattern. The mechanism of dynamic routing is more expensive.
Another advantage of using CapsNets is its interpretable representation of the results. It can be defined as:
“The interpretable representation of the neural network is its ability to disentangle the representation of the output of the learned features.”
The results of the CapsNets are interpretable and, therefore, more understandable. It provides semantically understandable outputs. As a result, these serve as a bridge between the complex outputs of neural networks and human understandable results.
The pooling layer is a special type of layer in the neural network that is responsible for the reduction of the dimensions of a feature map. It is done with the help of downsampling. In the case of capsule neural networks, there are no pooling layers; instead, the same functionality is accessed with dynamic routing. As a result, the capsule network shows state-of-the-art output for the images.
The part-whole relationship in neural networks is the connection between different parts of the same object. For instance, there is a part-whole connection between the table and the areas where different legs are connected to the flat board to make a table.
It is an important feature in fields like computer vision for processes like object detection, image segmentation, etc. In CapsNet, the part-whole relationship is strong and powerful because these use vectors to encode the pose of objects in an image. On the other hand, traditional CNN uses pooling layers for the same purpose, and it is difficult to get information about part-whole relationships.
Keeping all these differences in mind, we have created a tale for you to quickly review the difference between these layers:
Feature |
Traditional Neural Network |
CapsNets |
Building Block |
Neuron |
Capsule (Group of neurons) |
Layer Connection |
Static |
Dynamic |
Computational complexity |
Less |
More |
Efficacy of data |
Less |
More |
Maturity |
More |
Less |
Hierarchy Type |
Flat |
Interconnected |
Feature Mapping |
Pooling Layer |
Dynamic Routing |
Part-whole Relationship |
Pooling layer |
Vectors |
The capsule neural network has various applications in multiple departments. There is a lot of detail about each of them, but we have set out a simple list of applications for you. Here is it:
In the field of computer vision, there is a great deal of interest in capsule neural networks because they provide the best output in different orientations. The features of CapsNets are helpful in areas like image recognition, face recognition, medical imaging, etc.
Natural language processing requires neural networks that can subdivide the input in different ways. The capsule neural network helps in the processes of document classification and sentimental recognition.
The industry of robotics and its automation require the most efficient ways to teach object recognition to robots. The highly efficient mechanism of the capsule network is perfect for fields like robotics and automation. It helps with object manipulation and visual SLAM in the mentioned industries.
Hence, the capsule neural network is an important type of modern neural network that helps get image-related outputs more efficiently. These are made of capsules of neurons instead of using them singularly. Moreover, the hierarchy and routing systems help the users get the t output. We have seen multiple features of this neural network that are useful and better than the traditional neural network. However, these are more complicated to deal with, but overall, there are multiple applications of capsule neural networks. If you want to know more about modern neural networks then stay with us 9n the next session.
Hi learners! I hope you are having a good day. In the previous lecture, we saw Kohonen’s neural network, which is a modern type of neural network. We know that modern neural networks are playing a crucial role in maintaining the workings of multiple industries at a higher level. Today we are talking about another neural network named EfficientNet. It is not only a single neural network but a set of different networks that work alike and have the same principles but have their own specialized workings as well.
EfficentNet is providing groundbreaking innovations in the complex fields of deep learning and computer vision. It makes these fields more accessible and, therefore, enhances their range of practical applications. We will start with the introduction, and then we will share some useful information about the structure of this neural network. So let’s start learning.
EfficientNet is a family of neural networks that are part of CNN's architecture, but it has some of the latest and even better functionalities that help users achieve state-of-the-art efficiency.
The efficientNet was introduced in 2019 in a research paper with the title “EfficientNet: Rethinking Model Scaling for Convolutional Neural Networks.” Mingxing Tan and Quoc V. Le introduced it, and this is now one of the most popular and latest neural networks. These are Google’s AI researchers, and the popularity of this neural network is due to its robust applications in multiple domains.
The motivation behind EfficentNet's development is the popularity of its parent neural network, CNN, which is an expensive and efficient network. The deployment of CNN in resource-constrained environments such as mobile devices was difficult, which led to the idea of an EfficentNet neural network.
The EffcinetNet has a relatively simpler working model than the CNN to provide efficiency and accuracy. The basic principle of working is the same as in CNN, but EfficeintNet archives better goals because of the scaleable calculations. The convolution of the dataset allows EffcientNet to perform complicated calculations more efficiently. This helps EffcientNet a lot in the processing of images and complex data, and as a result, this neural network is one of the most suitable choices for fields like computer vision and image processing.
As we have mentioned earlier, EffcientNet is not a single neural network but a family. Each neural network has the same architecture but is slightly different because of the different working methods. Some parameters are important to understand before knowing the difference between these members:
When the topic is a neural network, the FLOPs denote the number of floating points per second a neural network can perform. It means the total number of billions of floating point operations an EffcinetNet member can perform.
The parameters define the number of weights and biases that the neural network can learn during the training process. These are usually represented in millions of numbers, and the user must understand that the 5.3 parameter means the particular member can learn 5.3 million parameters it can train.
Accuracy is the most basic and important parameter to check the performance of a neural network. The EffecntNet family varies in accuracy, and users have to choose the best one according to the requirements of the task.
Different family members of EffcientNet are indicated by numbers in the name, and each member has a slightly larger size than the previous one. As a result, accuracy and performance are enhanced. Here is the table that will show you the difference among these:
| Member Name | FLOPs | Parameters | Accuracy |
B0 |
0.6 |
5.3 |
77.1% |
B1 |
1.1 |
7.8 |
79.1% |
B2 |
1.8 |
9.2 |
80.1% |
B3 |
3.2 |
12.0 |
81.6% |
B4 |
5.3 |
19.0 |
82.7% |
B5 |
7.9 |
31.0 |
83.7% |
B6 |
11.8 |
43.0 |
84.4% |
B7 |
19.8 |
66.0 |
84.9% |
This table shows the trade-off between different parameters of EffcientNet models, and it shows that a larger size (increased cost) can be more useful and accurate, and vice versa. These eight members are best for particular types of tasks, and while choosing the best one for the particular task, some other kinds of research are also important.
The workings and structure of every family member of EffcientNet are alike. Therefore, here is a simple and general overview of the features of EffcientNet. This will show the workings and advantages of the EfficientNet neural network.
One of the most significant features of this family is the compound scaling, which is different from other options for neural networks. It has the power to maintain the balance between the following features of the network:
As a result, the EfficientNet network does not require additional computation and provides better performance.
A difference between the traditional CNN and EffientNet neural networks is the depthwise separable convolutions. As a result, the complexity of this network is less than CNN's. All the channels use a separate convolutional kernel; therefore, depthwise separate convolutions are applied to the channels.
The resultant image is then passed through a pointwise convolution. Here, the outputs of the depthwise convolution channel are combined into a single channel. The standard convolution requires a great deal of data, but this technique requires a smaller number of parameters and significantly reduces the complexity.
The EffcientNet family uses a different and more recent type of convolution known as MBConv. It has a better design than the traditional convolution. The depthwise convolutions and pointwise linear convolutions can be done simultaneously. It is useful in reducing floating-point operations for overall performance. The two key features of this architecture are:
Here is a simple introduction to both:
The inverted bottleneck has three main convolutional layers:
This is applied during the computation of the inverted bottleneck. This adds the shortcut connection around the inverted bottleneck, and as a result, the inverted residual blocks are formed. This is important because it helps reduce the loss of information when convolution is applied to the data.
The representational power of EffcientNet can be enhanced by using an architecture called Squeeze and Excite, or SE. It is not a particular or specialized architecture for EfficinetNet but is a separate block that can be incorporated into EfficentNet. The reason to introduce it here is to show that different architectures can be applied to EfficnetNet to enhance efficiency and performance.
The efficeintNet is a family, and therefore, it has multiple sets of workings out of which, the user can choose the most accurate. The eight members of this series (E0 to E7) are ideal for particular tasks; therefore, these provide the options for the user to get the best matching performance. All of these provide a different type of combination of accuracy and size, and therefore, more users are attracted to them.
Hence, this was all about EffientNet, and we have understood all the basic features of this neural network. The EffenctNet is a set of neural networks that are different from each other in accuracy and size, but their workings and structures are similar.
EffcientNet was developed by the Google AI Research team, and the inspiration was CNN. These are considered the lightweight version of the convolutional networks and provide better performance because of the compound scaling and depthwise convolutions. I hope it was helpful for you and if you want to know more about modern neural networks then stay with us because we will talk about these in the coming lectures.
Hi there! I hope you are having a great day. The success of the field of deep learning is due to its complex and advanced neural networks. These networks can be broadly divided into traditional and modern neural networks. We have seen the details of traditional neural networks, and in the previous session, the basic introduction of modern neural networks and the details of their features were discussed. Today, we will talk about one of the most famous modern neural networks, the Kohonen Self-Organized Neural Network.
Modern neural networks are more organized and developed than traditional neural networks, but that does not make traditional neural networks less efficient than modern ones. All the networks are introduced for specific tasks, and this is one of the main reasons behind the evolution of deep learning in every field. The details of Kohonen's Self-organizing Neural network will prove it, so let’s start learning.
The Kohonen Self-organizing network is also known as the self-organizing feature map (SOFM), and It was developed by Teuvo Kohonen in the 1980s. It is a powerful type of unsupervised learning, the main purpose of which is to map the high dimensional input data even at the lower dimensional grid. It can be used on two or more dimensional data where the neurons are connected and each layer is weighted according to the calculations.
Throughout the data dimensions, the topological properties of the data saved in them remain preserved. During the training process, the self-organizing map learns to organize itself with similar data points and creates a connection with the nearby neurons of the grid.
The training process for SOMs uses competitive learning methods. Think of the scenario where, when new data is added to the network, a quick calculation is made to find the neuron with the same data weight. The most suitable neuron is called the best matching unit (BMU), and adding the new data stimulates it. As a result of this addition, the weights of BMU and their neighbors are updated according to the data. It makes all the neurons similar to each other, and as a result, the network becomes better with time. Here are the details of the key features that we have just discussed:
Topology preservation is the feature of the algorithm that maintains the spatial relationship and the structure of the data that it uses. This all happens when the data is mapped on the lower dimensional grid.
The basic objective of topology preservation is to maintain the structure of the map. This feature preserves the data when it is mapped from higher to lower dimensional space.
This is the basic feature of the Kohonen neural network. The data is arranged in the form of a grid of nodes and neurons. Each of these represents a specific region or cluster of the input data. It becomes easy to maintain the structure of neurons with similar sizes and properties.
This is another way to organize the data in the SOM, and here, the BMU plays a vital role. This feature is responsible for checking two important parameters throughout the processing:
Learning rate
Neighbourhood operation
Here, the learning rate defines the magnitude of the update rate of neurons, and neighborhood operation means the measure of the change in the properties of neighboring neurons when new data is introduced in the model.
Competitive learning helps the network in processes like clustering and visualization. The network autonomously discovers the inherited structure without any need for supervision. It is an iterative process that helps the network grow and learn at a rapid rate.
Understanding the advantages of using Kohonen’s self-organizing network will clarify the significance of this network. Here are some important points about it:
Once you have understood the applications, you are ready to learn about the industrial uses of Kohonen’s self-organizing neural network. The workings of SOM are so organized and automatic that many industries rely on them for the most sensitive calculations, and their results affect the overall performance of that industry. Here are some examples:
The analysis of complex datasets by data mining companies is an important task. Many companies use SOM for such processes where the patterns have to be observed carefully to provide detailed analyses. Different techniques are useful in this regard, but SOM is used here because of the organized pattern and competitive learning.
Some of these companies provide tools for data exploration to their clients. Some provide customer segmentation and anomaly detection. All of these require the use of powerful neural networks, and they use SOM along with other networks for this.
In industries where financial records are imported, this technique detects fraud. For instance, it identifies the patterns of stock marketing and helps detect any abnormal bhavior. In addition to this, processes like risk assessment and credit storage are improved with the help of SOM. This is done in the institutes that are working globally, and a large community has to be handled by the institutes.
The advancement in technology has provided multiple advantages, but it has also led to increased security risks. The SOM is helpful in dealing with such issues. Here are some points to justify how SOM is helpful in different types of technical crimes:
Hence, today we have seen the details of Kohonen’s self-organizing neural network. It is a type of modern neural network that is helping people in different applications in real life. We have seen the features and workings of this neural network, and to understand its importance, we have seen its applications and advantages at different levels. I hope it was helpful to you, and if you want to know more types of modern neural networks, then we will discuss these in the coming sessions. Happy learning.
Hi pals! Welcome to the next deep learning tutorial, where we are at the exciting stage of TensorFlow. In the last tutorial, we just installed the TensorFlow library with the help of Anaconda, and we saw all the procedures step by step. We saw all the prerequisites and understood how you can follow the best procedure to download and install TensorFlow successfully without any trouble. If you have done all the steps, then you might be interested in knowing the basics of TensorFlow. No matter if you are a beginner or have knowledge about TensorFlow, this lecture will be equally beneficial for all of you because there is some important and interesting information that not all people know. So, have a look at the topics that will be discussed with you in just a bit.
What is a tensor?
What are some important types of tensors that we use all the time while using TensorFlow?
How can we start programming in TensorFlow?
What are the different operations on the TensorFlow?
How can you print the multi-dimensional array int he TensorFlow?
Moreover, you will see some important notes related to the practice that we are going to perform so, you can say, no point will be missing and we will recall our previous concepts all the time when we need them so that the beginners may also get the clear concepts that what is going on in the course.
There are different meanings of tensors in different fields of study, but we are ignoring others and focusing on the field with which we are most concerned: the mathematical definition of the tensor. This term is used most of the time when dealing with the data structure. We believe you have a background in programming languages and know the basics, such as what a data structure is, so I will just discuss the basic definition of tensors.
"The term "tensor" is the generalization of the metrics of nth dimensions and is the mathematical representation of a scaler, vector, dyad, triad, and other dimensions."
Keep in mind, in tensor, all values are identical in the data type with a known shape. Moreover, this shape can also be unknown. There are different ways to introduce the new tensor in TensorFlow while you are programming in it. If it is not clear at the moment, leave that because you will see the practical implementation in the next section. By the same token, you will see more of the additional concepts in just a bit, but before this, let me remind you of something:
Types of Data Structure |
No. of Rank |
Description |
No. of Components |
Vector |
1 |
There is only the magnitude but no direction. |
1 |
Scaler |
2 |
It has both magnitude and direction both. |
3 |
Dyad |
3 |
It has both magnitude and direction both. If x, y, and z are the components of the directions, then the overall direction is expressed by applying the sum operation of all these components. |
9 |
Triad |
4 |
It has the magnitude and also have the direction that is obtained by multiplying the 3 x 3 x 3. |
27 |
Before going deep into the practical work, I want to clarify some important points in the learning of TensorFlow. Moreover, in this tutorial, we will try to divide the lecture into the practical implementation and the theoretical part of the tutorial. We will see some terms often in this tutorial, and I have not discussed them before. So, have a look at the following descriptions.
The length of the tensor is called its shape, and we can understand the term "shape" in a way that it is defined with the help of the total number of rows and columns. While declaring the tensor, we have to provide its shape.
The rank defines the dimensions of the tensor. So, in other words, rank defines the order of the dimensions that starts at 1 and ends on the nth dimension.
When talking about the tensor, the “type” means the data type of that particular tensor. Just as we consider the data type in other programming languages, when talking about the language of TensorFlow, the type provides the same information about the tensor.
Moreover, in order to learn more about the type of the tensors, we examine them with respect to different operations. In this way, we found the following types of tensors:
tf.Variable
tf.constant
tf.placeholder
tf.SparseTensor
Before we get into the practical application of the information we discussed above, we'll go over the fundamentals of programming with TensorFlow. These are not the only concepts, but how you apply them in TensorFlow may be unfamiliar to you. So, have a look at the information given below:
When you want your compiler to ignore some lines that you have written as notes, you use the “sign of hash” before those lines. In other words, the compiler ignores every line that you start with this sign. In other programming languages, we use different types of signs for the same purpose, such as, // is used in C++ to start the comment line when we are using compilers such as Visual Studio and Dev C++.
When we want to print the results or the input to show on the screen, we use the following command:
print(message)
Where the message may be the input, output, or any other value that we want to print. Yet, we have to follow the proper pattern for this.
To apply the operations that we have discussed above, we have to first launch TensorFlow. We covered this in our previous session. Yet, every time, you have to follow some specific steps. Have a look at the details of these steps:
Fire up your Anaconda navigator from the search bar.
Go to the Home tab, where you can find the “Jupyter notebook."
Click on the launch button.
Select “Python” from the drop-down menu on the right side of the screen.
A new localhost will appear on your Google browser, where you have to write the following command:
import tensorflow as tf
from tensorflow import keras
Make sure you are using the same pattern and take care of the case of the alphabets in each word.
Here, you can see, we have provided that information about the type of tensor we want, and as an output, it has provided us with the information about the output. There is no need to provide you with the meaning of the int16 here as we all know that there are different types of integers and we have used the one that occupies the int16 space in the memory. You can change the data type for the practice. It is obvious that you are just feeding the input value, and the compiler is showing the output of the same kind as you were expecting. Here, the shape was empty because we have not input its value. So, we have understood that there is no need to provide the shape all the time. But, in the next programs, we will surely use the shape to tell you the importance of this type.
Before the practical implementation, you have seen the information about the dimensions of the Tensors. Now, we are moving forward with these types, and here is the practical way to produce these tensors in TensorFlow.
Here, you can print the two-dimensional array with the help of some additional commands. I'll go over everything in detail one by one. In the case discussed before, we have provided information about the tensor without any shape value. Now, have a look at the case given next;
Copy the following code and insert it into your TensorFlow compiler:
a=tf.constant([[3,5,7],[3,9,1]])
print(a)
Here comes the interesting point. In this case, we are just declaring the array with two dimensions, and TensorFlow will provide you with the shape (information of the dimension) and the memory this tensor name “a" is occupying by itself. As a result, you now know that this array has two rows and three columns.
By the same token, you can use any number of dimensions, and the information will be provided to you without any issues. Let us add the other dimensions.
Let’s have another example to initialize the matrix in TensorFlow, and you will see the shortcut form of the declaration of a unit matrix of your own choice. We know that a unit matrix has all the elements equal to one. So, you can have it by writing the following code:
a=tf.ones((3,3)
print(a)
The result should look like this:
Other examples of matrices that can be generated in such a way are the identity matrix and zero matrices. The identity matrix and the zero matrices are two other matrices that can be generated in this manner. For a zero and identity matrix, we will use “zero” and “eye” respectively in place of “ones” in the code given above.
The next step is to practice creating a matrix containing random numbers between the ranges that are specified by us. For this, we are using the random operation, and the code for this is given in the next line:
a=tf.random.uniform((1,5),minval=1, maxval=3)
print(a)
When we observe these lines, we will understand that first of all, we are using the random number where the numbers of
Rows and columns are given by us. I have given the single-row and five-column matrix in which I am providing the compiler with the maximum and minimum values. Now, the compiler will generate random values between these numbers and display the matrix in the order you specify.
So, from the programs above, we have learned some important points:
Just like in the formation of matrices in MATLAB, you have to put the values of rows in square brackets.
Each element is separated from the others with the help of a comma.
Each row is separated by applying the comma between the rows and enclosing the rows in the brackets.
All the rows are enclosed in the additional square bracket.
You have to use the commas properly, or even if you have a single additional space, you can get an error from the compiler while running it.
It is convenient to give the name of the matrix you are declaring so that you can feed the name into the print operation.
If you do not name the matrix, you can also use the whole matrix in the print operation, but it is confusing and can cause errors.
For the special kinds of matrices that we have learned in our early concepts of matrices, we do not have to use the square brackets, but instead, we will use the parentheses along with the number of elements so that compiler may have the information about the numbers of rows and columns, and by reading the name of the specific type of the matrix, it will automatically generate the special matrices such as the unit matrix, the null matrix, etc.
The special kind of matrices can also be performed in the TensorFlow but you have to follow the syntax and have to get the clear concept for the performance.
So, in this tutorial, we have started using the TensorFlow that we had installed in the previous lecture. Some of the steps to launch TensorFlow are the same and you will practice them every day in this course. We have seen how can we apply the basic functions in the TensorFlow related to the matrices. We have seen the types of tensors that are, more or less, similar to the matrices. You will see the advanced information about the same concepts in the tutorials given next as we are moving from the basics to the advance so stay with us for more tutorials.
Hello Peeps! Welcome to the next lecture on deep learning, where we are discussing TensorFlow in detail. You have seen why we have chosen TensorFlow for this course, and we have read a lot about the working mechanism, programming languages, and advantages of using TensorFlow instead of other libraries. Instead of using the other options for the same purpose, we have seen several reasons to use TensorFlow. Because of the latest work on the library for more improvement and better results, it's now time to learn the specifics of TensorFlow installation. But before this, you have to check the list of the concepts that will be cleared today:
The simple and to-the-point answer to this question is, the installation is easy and usually does not require any practice. If you are new to the technical world or have not experienced the installation of any software, do not worry because we will not skip any steps. Moreover, we have chosen the perfect way to install TensorFlow by telling you the all necessary information about the installation process so you start only if all the parameters are completed. So, first of all, let us share the prerequisites with you.
What are the minimum requirements for Tensorflow to be installed on your PC?
How can we choose the best method for the installation of TensorFlow?
How can we install TensorFlow with Jupyter?
What is the process for the Keras to be installed?
How can you launch the TensorFlow and Keras with the help of Jupyter Notebook?
What is the significance to use Jupyter, Keras, and TensorFlow?
To install TensorFlow without difficulty, you must keep all types of requirements in mind. We have categorised each type of requirement and you just have to check whether you are ready to download it or not.
System Requirements |
||
Ubuntu |
16.04 or higher |
64 bits |
macOS |
10.12.6 (Sierra) or higher, GPU is not supported. |
N/A |
Window Native |
Window 7 (higher is recommended) |
64 bits |
Window WSL |
Window 10 |
64 bits |
By the same token, there are some hardware requirements and below these values, the hardware does not support the TensorFlow.
Hardware Requirement |
|
GPU |
NVIDIA® GPU card with CUDA® architectures 3.5, 5.0, 6.0, 7.0, 7.5, 8.0 |
Here, it is important to notice that the requirements given in all the tables are the minimum requirement s and you can go for the higher versions of all of these for the better results and quality work.
Software Requirement |
|
Python version |
3.7-3.10 |
Pip version |
19.0 (for window and Linux), 20.3 (for macOS) |
NVIDIA® for GPU support |
|
NVIDIA® GPU driver |
version 450.80.02 |
CUDA® Toolkit |
11.2 |
cuDNN SDK |
8.1.0 |
Moreover, to enhance the latency and performance, TesnorFlowRT is recommended. All the requirements given above are authentic and you must never skip any of these if you want to get 100 efficiencies. Moreover, for the course we are working on, there is no need for any GPU as we are moving towards the basic course and we can install GPU in future if required.
Now it's time to make a decision about the type of installation you want. This is the step that makes TensorFlow different from the other simple installations. If you're going to install it on your PC, you have to get help from another software. There is certain software through which you can install the library software with the help of Anaconda software. For this, we are going to the official website and installing the anaconda software.
As soon as you will click on the download option, the loading will start and the software of Anaconda with the size 600+MBs will start downloading. It will take a few moments to be downloaded.
Once the process discussed above is completed, you have to click on the installation button and the window will be pop-up on your screen where the installation steps have to be completed by you.
The installation process is so simple that many of you have known them before but the purpose to tell you about each and every step is, some people do not know much about the installation or have the habit to match the steps with the tutorials so they may know that they are at the right path.
In the next step, you have to provide the path for the installation place of the anaconda. By default, as you expect, the C drive is set but I am going to change the directory. You can choose the path according to your choice.
Now, you will see that it is asking for the settings according to your choice. By default, the second option is ticked and I am installing the Anaconda as it is and click on the installation process.
Now, the installation process is starting and it will take some time.
While this step is taking a little time, you can read about the documentation of the TensorFlow.
Once the installation is complete, the next button will direct you towards this window:
In this way, Anaconda will be installed on your PC. You must know that it has multiple libraries, functions, and software within it and there is no need to check them all. For our practice, we just have to know about the Jupyter notebook. It will be cleared in just a bit How can we start and work with this notebook?
It seems that you have successfully installed Anaconda and are now moving towards the installation of your required library. It is a simple and interesting process that requires no technical skills. You just have to follow the simple steps given next:
Go to the start menu of your window.
Search for the “Anaconda command prompt."
Click on it, and a command prompt window will appear on your screen.
You just have to write the following command and the Anaconda will automatically install this amazing library for you.
As you can see, it mentions that the download of TensorFlow requires 266.3 MBs. Once this command is entered, the installation of the TensorFlow will carry out and you have to wait for some moments.
To confirm the installation process, I am providing you with some important commands. You just have to type “python” in the command prompt, and Anaconda will confirm the presence of the python information on your PC.
In the next step, to ensure that you have installed Tensorflow successfully, you can write the following command:
Import TensorFlow as tf
If nothing happens in the command prompt, it means your library was successfully installed; otherwise, it throws an error.
Hence, the TensorFlow library is successfully installed on our PCs. The same purpose is also completed with the help of Jupyter Navigator, and you will see it in detail.
Finally, for the perfect installation, we will search, follow the path Home>Search>Anaconda Navigator, and press enter. The following screen will appear here.
You have to choose the “Environment” button and click on the “Create” button to create a new environment. A small window will appear, and you have to name your environment. I am going to name it "TensorFlow.”
There is a possibility that it recommends the updated version if it is available. We recommend you have the latest version, but it is not necessary. As soon as you click on the "Create" button, in the lower right corner, you will see that your project is being loaded.
This step takes some time; in the meantime, you can check the other packages in the Anaconda software.
There is a need for Keras API as you have seen in our previous lectures. But as a reminder, we must tell you that Keras is a high-level application programming interface that is specially designed for deep learning and machine learning by Google, and with the help of this PAI, TensorFlow provides you with perfect performance and efficient work. So, here are the steps to install Keras on your PC.
Open the Jupyter navigator.
Click on the "create" button.
Write the name of your new environment, I am giving it the name "Keras,” as you were expecting.
The next step is to load the environment, as you have seen in the case of TensorFlow as well.
These steps are identical to the creation of an environment for TensorFlow. It is not necessary to discuss why we are doing this and what the alternatives are. For now, you have to understand the straightforward procedure and follow it for practice.
Keep in mind that, till now, you have just installed the library and API, but for the working of both of these, you have to run them, and we will earn this in just a bit.
The installation process does not end here. After the installation process, you have to check if everything is working properly or not. For this, go to the home page and then search for “Jupyter notebook." You must notice that there is a launch button at the bottom of this notebook’s section. If you found something else here, such as "Install,” then you have to first install the notebook by simply clicking on it, and then launch the notebook.
As soon as you launch the Jupyter notebook, you will be directed to your browser, where the notebook is launched on the local host of your computer. Here, it's time to write the commands to check the presence and working of the TensorFlow. You have to go to the upper right side of the screen and choose the Python3 (ipykernel) mode.
Now, as you can see, you are directed towards the screen where a code may be run. So you have to write the following command here:
Import tensorflow as tf
From tensorflow import keras
This may look the same as the previous way to install tensorflow, but it is a little bit different because now, at Jupyter, you can easily run your code and work more and more on it. It is more user-friendly and has the perfect working environment for the students and learners because of the efficient results all the time.
Keras is imported along with TensorFlow, and it is so easy to deal with deep learning with the help of this library and API.
If you do not remember these steps, do not worry because you will practice them again and again in this course, and after that, you will become an expert in TensorFlow. Another thing to mention is that you can easily launch Keras and TensorFlow together; you do not have to do them one after the other. But sometimes, it shows an error because of the difference in the Python version or other related issues. So it is a good practice to install them one after the other because, for both, the procedure is identical and is not long.
So, it was an informative and interesting lecture today. We have utilized the information from the previous lectures and tried to install and understand TensorFlow in detail. Not only this, but we also discussed the installation process of Keras, which has a helpful API, and understood the importance of using them together. Once you have started TensorFlow, you are now ready to use and work with it within Jupyter. Obviously, there are also other ways to do the same work as we have done here, but all of them are a little bit complex, and I found these procedures to be the best. If you have better options, let us know in the comment section or contact us directly through the website.
In the next session, we will work on TensorFlow and learn the basics of this amazing library. We will start from the basics and understand the workings and other procedures of this library. Till then, stay with us.
Hey learners! Welcome to the new tutorial on deep learning, where we are going deep into the learning of the best platform for deep learning, which is TensorFlow. Let me give you a reminder that we have studied the need for libraries of deep learning. There are several that work well when we want to work with amazing deep-learning procedures. In today’s lecture, you are going to know the exact reasons why we chose TensorFlow for our tutorial. Yet, first of all, it is better to present the list of topics that you will learn today:
Why do we use TensorFlow with deep learning?
What are some helpful features of this library?
How can you understand the mechanism of TensorFlow?
Show the light towards the architecture, and components of the TensorFlow.
In how many phases you can complete the work in the TensorFlow and what are the details of each step?
How the data is represented in the TensorFlow?
In this era of technology, where artificial intelligence has taken charge of many industries, there is a high demand for platforms that, with the help of their fantastic features, can make deep learning easier and more effective. We have seen many libraries for deep learning and tested them personally. As a result of our research, we found TensorFlow the best among them according to the requirements of this course.
There are many reasons behind this choice that we have already discussed in our previous sessions but here, for a reminder, here is a small summary of the features of TensorFlow
Flexibility
Easy to train
Ability to train the parallel neural network training
Modular nature
Best match with the Python programming language
As we have chosen Python for the training process, therefore, we are comfortable with the TensorFlow. It also works with traditional machine learning and has the specialty of solving complex numerical computations easily without the requirement of minor details. TensorFlow proved itself one of the best ways to learn deep learning, therefore, google open-sourced it for all types of users, especially for students and learners.
The features that we have discussed before we very generalized and you must know more about the specific features that are important to know before getting started with TensorFlow.
Before you start to take an interest in any software or library, you must have knowledge about the specific programming languages in which you operate that library. Not all programmers are experts in all coding languages; therefore, they go with the specific libraries of their matching APIs. TensorFlow can be operated in two programming languages via APIs:
C++
Python
Java (Integration)
R (Integration)
The reason we love TensorFlow is that the coding mechanism for deep learning is much more complicated. It is a difficult job to learn and then work with these coding mechanisms.
TensorFlow provides the APIs in comparatively simple and easy-to-understand programming languages. So, with the help of C++ or Python, you can do the following jobs in TensorFlow:
To configure the neuron
Work with the neuron
Prepare the neural network
As we have said multiple times, deep learning is a complex field with applications in several forms. The training process of the neural network with deep learning is not a piece of the cake. The training process of neural networks requires a lot of patience. The computations, multiplication of the matrices, complex calculations of mathematical functions, and much more require a lot of time to be consumed, even after experience and perfect preparations. At this point, you must know clearly about two types of processing units:
Central processing unit
Graphical processing unit
The central processing units are the normal computer units that we use in our daily lives. We've all heard of them. There are several types of CPUs, but we'll start with the most basic to highlight the differences between the other types of processing units. The GPUs, on the other hand, are better than the CPUs. Here is a comparison between these two:
CPU |
GPU |
Consume less memory |
Consume more memory |
They work at a slow speed |
They work at a higher speed |
The cores are more powerful.powerful |
They have contained relatively less powerful cores |
It has a specialty in serial instruction processing |
They are specialized to work in a parallel processing |
Lower latency |
Higher latency |
The good thing about TensorFlow is, it can work with both of them, and the main purpose behind mentioning the difference between CPU and GPU was to tell you about the perfect match for the type of neural network you are using. TensorFlow can work with both of these to make deep learning algorithms. The feature of working with the GPU makes it better for compilation than other libraries such as Torch and Keras.
It is interesting to note that Python has made the workings of TensorFlow easier and more efficient. This easy-to-learn programming language has made high-level abstraction easier. It makes the working relationship between the nodes and tensors more efficient.
The versatility of TensorFlow makes the work easy and effective. TensorFlow modules can be used in a variety of applications, including
Android apps
iOS
Cluster
Local machines
Hence, you can run the modules on different types of devices, and there is no need to design or develop the same application for different devices.
The history of deep learning is not unknown to us. We have seen the relationship between artificial intelligence and machine learning. Usually, the libraries are limited to specific fields, and for all of them, you have to install and learn different types of software. But TensorFlow makes your work easy, and in this way, you can run conventional neural networks and the fields of AI, ML, and deep learning on the same library if you want.
The architecture of the TensorFlow depends upon the working of the library. You can divide the whole architecture into the three main parts given next:
Data Processing
Model Building
Training of the data
The data processing involves structuring the data in a uniform manner to perform different operations on it. In this way, it becomes easy to group the data under one limiting value. The data is then fed into different levels of models to make the work clear and clean.
In the third part, you will see that the models created are now ready to be trained, and this training process is done in different phases depending on the complexity of the project.
While you are running your project on TensorFlow, you will be required to pass it through different phases. The details of each phase will be discussed in the coming lectures, but for now, you must have an overview of each phase to understand the information shared with you.
The development phase is done on the PC or other types of a computer when the models are trained in different ways. The neural networks vary in the number of layers, and in return, the development phase also depends upon the complexity of the model.
The run phase is also sometimes referred to as the inference phase. In this phase, you will test the training results or the models by running them on different machines. There are multiple options for a user to run the model for this purpose. One of them is the desktop, which may contain any operating system, whether it is Windows, macOS, or Linux. No matter which of the options you choose, it does not affect the running procedure.
Moreover, the ability of TensorFlow to be run on the CPU and GPU helps you test your model according to your resources. People usually prefer GPU because it produces better results in less time; however, if you don't have a GPU, you can do the same task with a CPU, which is obviously slower; however, people who are just getting started with deep learning training prefer CPU because it avoids complexities and is less expensive.
Finally, we are at the part where we can learn a lot about the TensorFlow components. In this part, you are going to learn some very basic but important definitions of the components that work magically in the TensorFlow library.
Have you ever considered the significance of this library's name? If not, then think again, because the process of performance is hidden in the name of this library. The tensor is defined as:
"A tensor in TensorFlow is the vector or the n-dimensional data matrix that is used to transfer data from one place to another during TensorFlow procedures."
The tensor may be formed as a result of the computation during these procedures. You must also know that these tensors contain identical datatypes, and the number of dimensions in these matrices is known as the shape.
During the process of training, the operations taking place in the network are called graphs. These operations are connected with each other, and individually, you can call them "ops nodes." The point to notice here is that the graphs do not show the value of the data fed into them; they just show the connections between the nodes. There are certain reasons why I found the graphs useful. Some of them are written next:
These can be run or tested on any type of device or operating system. You have the versatility to run them on the GPU, OS, or mobile devices according to your resources.
The graphs can be saved for future use if you do not want to use them at the current time or want to reuse them in the future for other projects or for the same project at any other time, just like a simple file or folder. This portable nature allows different people sharing the same project to use the same graph without having any issues.
TensorFlow works differently than other programming languages because the flow of data is in the form of nodes. In traditional programming languages, code is executed in the form of a sequence, but we have observed that in TensorFlow, the data is executed in the form of different sessions. When the graph is created, no code is executed; it is just saved in its place. The only way to execute the data is to create the session. You will see this in action in our coming lectures.
Each node in the TensorFlow graph, the mathematical operation such as addition, subtraction, multiplication, etc, is represented as the node. By the same token, the multidimensional arrays (or tensors) are shown by the nodes.
In the memory of TensorFlow, the graph of programming languages is known as a "computational graph."
With the help of CPUs and GPUs, large-scale neural networks are easy to create and use in TensorFlow.
By default, a graph is made when you start the Tensorflow object. When you move forward, you can create your own graphs that work according to your requirements. These external data sets are fed into the graph in the form of placeholders, variables, and constants. Once these graphs are made and you want to run your project, the CPUs and GPUs of TensorFlow make it easy to run and execute efficiently.
Hence, the discussion of TensorFlow is ended here. We have read a lot about TensorFlow today and we hope it is enough for you to understand the importance of TensorFlow and to know why we have chosen TensorFlow among the several options. In the beginning, we have read what is TensorFlow and what are some helpful features of TensorFlow. In addition to this, we have seen some important APIs and programming languages of this library. Moreover, the working mechanism and the architecture of TensorFlow were discussed here in addition to the phases and components. We hope you found this article useful, stay with us for more tutorials.
Hey buddies! Welcome to the next tutorial on deep learning, in which you are about to acquire knowledge related to Python. This is going to be very interesting because the connection between these two is easy and useful. In the last lecture, we had an eye on the latest and trendiest deep learning algorithms, and therefore, I think you are ready to take the next step towards the implementation of the information that I shared with you. To help you make up your mind about the topics of today, I have made a list for you that will surely be useful for you to understand what we are going to do today.
How do you introduce the Python programming language to a deep learning developer?
How is Python useful for deep learning training in different ways?
Do Python provide the useful frameworks for the depe learning?
What are some libraries of Python that are useful for the deep learning?
Why do programmers prefer Python over other options when working with deep learning?
What are some other options besides Python to be used with deep learning?
Over the years, the hot topic in the world of programming languages has been Python because of many reasons that you will learn soon. It is critical to understand that when selecting a coding language, you must always be confident in its efficiency and functionality. Python is the most popular because of its fantastic performance, and therefore, I have chosen it for this course. From 2017 to the present, calculations and estimations of popularity show that Python is in the top ten in the interests of both common users and professionals due to its ease of installation and unrivaled efficiency.
Now, recall that deep learning is a popular topic in the industry of science and technology, and people are working hard to achieve their goals with the help of deep learning because of its jaw-dropping results. When talking about complexity, you will find that deep learning is a difficult yet useful field, and therefore, to minimize the complexity, experts recommend python as the programming language. All the points discussed below are an extraction of my personal experience, and I chose the best points that every developer must know. The following is a list of the points that will be discussed next:
I am discussing this point at the start of the discussion because I think it is one of the most important points that make programming better and more effective. If the code is clean and easy to read, you will definitely be able to pay attention to the programming in a better way. Usually, the programming is done in the grouping phase, and for the testing and other phases of successful programming, it is important to understand the code written by the others. Hence, coding in Python is easy to read and understand, and by the same token, you will be able to share and practice more and more with this interesting coding language.
The syntax and rules of the Python programming language allow you to present your code without mentioning many details. People realize that it is very close to the human language, and therefore, there is no need to have a lot of practice or knowledge to start practising. These are the important points that prove the importance of the Python language for writing more useful code. As a result, you can conclude that for complex and time taking processes such as deep learning, Python is one of the ideal languages because you do not have to spend a lot of time coding but will be able to use this energy to understand the concepts of deep learning and its applications.
Python, like other modern programming languages, supports a variety of programming paradigms. It fully supports:
Object-oriented Programming
Structured programming
Furthermore, its language features support a wide range of concepts in functional and aspect-oriented programming. Another point that is important to notice is that Python also includes a dynamic type system and automatic memory management.
Python's programming paradigms and language features enable you to create large and complex software applications. Therefore, it is a great language to use with deep learning.
If you are a programmer, you will have the idea that for different programming languages, you have to download and install other platforms for proper working. It becomes hectic to learn, buy, and use other platforms for the working of a single language. But when talking about Python, the flexibility can be proven by looking at the following points:
It supports multiple operating systems.
It is an interpreted programming language. That means you can run the Python code on several platforms without the headache of recompilation for the other platforms.
The testing of the Python code is easier than in some other programming languages.
All these points are enough to understand the best combination of deep learning with the Python programming language because deep learning requires the training and testing process, and there may be a need to test the same code or the network on different platforms.
Want to know why Python is better than other programming languages? One of the major reasons is the fantastic and gigantic library of the Python language. It is a programming tip that programmers should always check the programming language's library if they want to know its efficiency and ability to work instantly. One thing to notice is that you will get a large number of modules, and it allows you to choose the modules of your choice. So, you can ignore the unnecessary modules. This feature is also present in other popular programming languages. Moreover, you can also add more code according to your needs. For the experts, it is a blessing because they can use their creativity by using the already-saved modules.
Deep Elarnigna only contains algorithms, and it requires a programming language that allows for simple and quick module creation. Python is therefore ideal for deep embedding in context.
In the past lectures, we have seen the frameworks of deep learning, and therefore, for the best compatibility, the programming language in which the deep learning is being processed must also have open-source frameworks; otherwise, this advantage of deep learning will not be useful. Most of the time, the tools and frameworks are not only open source but also easily accessible, which makes your work easier. I believe that having more coding options makes your work easier because coding is a time-consuming process that requires you to have as much ease as possible for better practice. Here is the list of some frameworks that are used with the Python programming language:
Django
Flask
Pyramid
Bottle
Cherrypy.
Another reason why experts recommend Python for deep learning is the Python frameworks related to graphical user interfaces. In the previous lectures, you have seen that deep learning has a major application in image and video processing, and therefore, it is a good match for deep learning with Python coding. The GUI frameworks of Python include:
PyQT
PyJs
PyGUI
Kivy
PyGTK
WxPython
Observe that the keyword "Py" with all these frameworks indicates the specification of the Python programming language with these frameworks. At this point, it is not important to understand all of them. But as an example, I want to tell you that Kivy is used for the front end of Android apps with the help of Python.
This category makes it important to notice the connection between the Python programming language and deep learning because, when working with deep learning, a greater variety of frameworks results in an easier working and better training process.
If you are following our previous tutorials, you will be aware of the importance of testing in deep learning. But allow me to tell you the connection between Python and the test-driven approach. In deep learning, all efficiency depends upon the testing process. More and more training and testing means better performance, which the network can recognize better. Python provides for the rapid creation of prototype applications, and similarly, it also provides the best test driven approach when connected to networks.
The first rule to learning programming languages is to have consistency in your nature. Yet, for the more difficult programming languages, where the absence of a single semicolon can be confusing for the compiler, consistency is difficult to attain. On the contrary, an easier and more readable programming language, such as Python, helps to pay more attention to the code, and thus the user is more drawn to its work. Deep learning can only be performed in such an environment. So, for peace of mind, always choose Python.
Have you ever been stuck in a problem while coding and could not find the help you needed? I've seen this many times, and it's a miserable situation because the code contains your hard work from hours or even days, but you still have to leave it. Yet, because of the popularity and saturation of this field, Python developers are not alone. Python is a comparatively easy language, and normally people do not face any major issues. Yet, for the help of the developers, there is a large community related to Python where you can find the solution of your problems, check the trends, have a chit chat with other developers, etc.
When working on deep learning projects, it's fun to be a part of a community with other people who are working on similar projects. It is the perfect way to learn from the seniors and grow in a productive environment. Moreover, while you are solving the problems of the juniors, you will cultivate creativity in your mind, and deep learning will become interesting for you.
At this point, where I am discussing a lot about Python, it must be clarified that it is not the only option for deep learning. Deep learning subjects are always wasteful, and users always have more than one option. However, we prefer Python for a variety of reasons, and now I'd like to tell you about some other options that appear useful but are, in fact, less useful than Python. The other programming languages are:
JavaScript
Swift
Ruby
R.
C
C++
Julia
PHP
No doubt, people are showing amazing results when they combine one or more of these programming languages with deep learning, but usually, I prefer to work more with Python. It totally depends on the type of project you have or other parameters such as the algorithm, frameworks, hardware the user has, etc. to effectively choose the best programming language for deep learning. An expert always has an eye on all the parameters and then chooses the perfect way to solve the deep learning problems, no matter what the difficulty level of the language is.
Hence, we have discussed a lot about the Python today. Before all this discussion, our focus was on the deep learning and its working so you amy have the idea what actually si going on. In this article, we have seen the compatibility of the Python programming language with deep learning. We knew about the parameters of the deep learning and therefore were able to understand the reason of choosing the Python for our work. Throughout this article, we have seen different reasons why we have chosen TensorFlow and related libraries for our work. It is important to notice that Python works best with the TensorFlow and Keras APIs, and therefore, from day one, we have focused on both of these. In the next lecture, you will see some more important information about deep learning, and we are moving towards the practical implementation of this information. Once we have performed the experiment, all the points will be crystal clear in your mind. So until then, learn with us and grow your knowledge.
Hello pupils! Welcome to the following lecture on deep learning. As we move forward, we are learning about many of the latest and trendiest tools and techniques, and this course is becoming more interesting. In the previous lecture, you saw some important frameworks in deep learning, and this time, I am here to introduce you to some fantastic algorithms of deep learning that are not only important to understand before going into the practical implementation of the deep learning frameworks but are also interesting to understand the applications of deep learning and related fields. So, get ready to learn the magical algorithms that are making deep learning so effective and cool. Yet before going into details, let me discuss the questions for which we are trying to find answers.
How does deep learning algorithms are introduced?
What is the working of deep learning algorithms?
What are some types of DL algorithms?
How do deep learning algorithms work?
How these algorithms are different from each other?
Deep learning plays an important role in the recognition of objects and therefore, people use this feature in image, video and voice recognition where the objects are not only detected but can be changed, removed, edited, or altered using different techniques. The purpose to discuss these algorithms with you is, to have more and more knowledge and practice to choose the perfect algorithm for you and to have the concept of the efficiency and working of each algorithm. Moreover, we will discuss the application to provide you with the idea to make new projects by merging two or more algorithms together or creating your own algorithm.
Throughout this course, you are learning that with the help of the implementation of deep learning, computers are trained in such a way that they can take human-like decisions and can have the ability to act like humans with the help of their own intelligence. Yet, it is time to learn about how they are doing this and what the core reason is behind the success of these intelligent computers.
First of all, keep in mind that deep learning is done in different layers, and these layers are run with the help of the algorithm. We introduce the deep learning algorithm as:
“Deep learning algorithms are the set of instructions that are designed dynamically to run on the several layers of neural networks (depending upon the complexity of the neural networks) and are responsible for running all the data on the pre-trained decision-making neural networks.”
One must know that, usually, in machine learning, there is tough training to work with complex datasets that have hundreds of columns or features. This becomes difficult with the classic deep learning algorithm, so the developers are constantly designing a more powerful algorithm with the help of experimentation and research.
When people are using different types of neural networks with the help of deep learning, they have to learn several algorithms to understand the working of each layer of the algorithm. Basically, these algorithms depend upon the ANNs (artificial neural networks) that follow the principles of human brains to train the network.
While the training of the neural network is carried out, these algorithms take the unknown data as input and use it for the following purposes:
To group the objects
To extract the required features
To find out the usage patterns of data
The basic purpose of these algorithms is to build different types of models. There are several algorithms for neural networks, and it is considered that no algorithm is perfect for all types of tasks. All of them have their own pros and cons, and to have mastery over the deep learning algorithm, you have to study more and more and test several algorithms in different ways.
Do you remember that in the previous lectures we discussed the types of deep learning networks? Now you will observe that, while discussing the deep learning algorithms, you will utilize your concepts of neural networks. With the advancement of deep learning concepts, several algorithms are being introduced every year. So, have a look at the list of algorithms.
Convolutional Neural Networks (CNNs)
Long Short-Term Memory Networks (LSTMs)
Deep Belief Networks (DBNs)
Generative Adversarial Networks (GANs)
Autoencoders
Radial Basis Function Networks (RBFNs)
Multilayer Perceptrons (MLPs)
Restricted Boltzmann Machines( RBMs)
Recurrent Neural Networks (RNNs)
Self-Organizing Maps (SOMs)
Do not worry because we are not going to discuss all of them at a time but will discuss only the important ones to give you an overview of the networks.
Convolutional neural networks are also known as "ConvNets," and the main applications of these networks are in image processing and related fields. If we look back at its history, we find that it was first introduced in 1998. Yan LeCun initially referred to it as LeNet. At that time, it was introduced to recognize ZIP codes and other such characters.
We know that neural networks have many layers, and similar is the case with CNN. We observe different layers in this type of network, and these are described below:
Sr # |
Name of the Layer |
Description of the Layer |
1 |
Convolution layer |
The convolution layer contains many filters and is used to perform the convolution operations. |
2 |
Rectified linear unit |
The short form of this layer is ReLu, and it is used to perform different operations on the elements. It is called “rectified” because the output is obtained as a rectified feature map by using this layer. |
3 |
Pooling layer |
This is the layer where the results of the ReLu are fed as the input. Pooling is defined as the downsampling operation, and it is used to reduce the dimension of a feature map. The next phase is to convert this feature map, and then this two-dimensional array is converted into a single flat, continuous, and single vector. |
4 |
Fully connected layer |
The single vector from the pooling layer is finally fed into this last layer. At the end, classification of the image is done to identify it. |
As a reminder, you must know that neural networks have many layers, and the output of one layer becomes the input for the next layer. In this way, we get refined and better results in every layer.
This is a type of RNN (recurrent neural network) with a good memory that is used by experts to remember long-term dependencies. By default, it has the ability to recall past information over a long period of time. Because of this ability, LSTMs are used in time series prediction. It is not a single layer but a combination of four layers that communicate with each other in a unique way. Some very typical uses of LSTM are given below:
Speech recognition
Development in pharmaceutical operations
Different compositions in music
If you are familiar with the fundamentals of programming, you will understand that if we want to repeat a process, loops, or recurrent processes, are the solution. Similarly, the recurrent neural network is the one that forms the directed cycles. The unique thing about it is that the output of the LSTM becomes the input of the RNN. It means these are connected in a sequence, and in this way, the current phase becomes the output of the LSTM.
The main reason why this connection is magical is that you can utilize the feature of memory storage in LSTM and the ability of RNNs to work in a cyclic way. Some uses of RNN are given next:
Recognition of handwriting
Time series analysis
Translation by the machine
Natural language processing
captioning the images
The output of the RNN is obtained by following the equation given next:
If
output=t-1
Then
input=1
So at the output t
input=1+1
And this series goes on
Moreover, RNN can be used with any length of the input, but the size of the model does not increase when the input size is increased.
Next on the list is the GAN or the generative adversarial network. These are known as “adversarial networks" because they use two networks that compete with each other to generate real-time synthesized data. It is one of the major reasons why we found applications of the generative adversarial network in video, image, and voice generation.
GANs were first described in a paper published in 2014 by Ian Goodfellow and other researchers at the University of Montreal, including Yoshua Bengio. Yann LeCun, Facebook's AI research director, referred to GANs as "the most interesting idea in ML in the last 10 years." This made GANs a popular and interesting neural network. Another reason why I like this network is the fantastic feature of mimicking. You can create music, voice, video, or any related application that is difficult to recognize as being made by a machine. The impressive results are making this network more and more popular every day, but the evil of this network is equal. As with all technologies, people can use them for negative purposes, so check and balance are applied to such techniques. Moreover, GAN can generate realistic images and cartoons with high-quality results and render 3D objects.
At first, the network learns to distinguish between the generated fake data and sampled data. It happens when fake data is produced and the discriminator learns to recognise if it is real or false. After that, GAN is responsible to send the results to the generator so that it can learn and memorize the results and go for further training.
If it seems a simple and easy task, then think again because the recognition part is a tough job and you have to feed the perfect data in the perfect way so you may have accurate results every time.
For the problems in the function approximation, we use an artificial intelligence technique called the radial basis function network. It is somehow a little bit different from the previous ones. These are the types of forward-feed neural networks, and the speed and performance of these networks make them better than the other neural networks. These are highly efficient and have a better learning speed than others, but they require experience and hard work. Another reason to call them better is the presence of only one hidden layer and one radial basis function that is used as an activation function. Keep in mind that the activation function is highly efficient in its approximation of the results.
It takes the data from a training set and measures the similarities in the input. In this way, it classifies the data.
In the layer of RBF neurons, the input vector is then fed into the input layer.
After finding the weighted sum of the inputs, we obtain the output. Each category or class of data has one node.
The difference from the other network is, the neurons contain a gaussian transfer function, and the output is inversely proportional to the distance between the centre of the network and the neuron.
In the end, we get the output, which is a combination of both, the input of the radial basis function and the neuron parameters.
So, it seems that these networks are enough for today. Although there are different types of neural networks as well, as we have said earlier, with the advancement in deep learning, more and more algorithms for the neural networks are being introduced that have their own specifications, yet at this level, we just wanted to give you an idea about the neural networks. At the start of this article, we have seen what deep learning algorithms are and how they are different from other types of algorithms. We have seen the types of neural networks that include CNNs, LSTMNs, RNNs, GANs, and RBFs.
Hello peeps. Welcome to the next tutorial on deep learning. You have learned about the neural network, and it was an interesting way to compare different types of neural networks. Now, we are talking about deep learning frameworks. In the previous sessions, we introduced you to some important frameworks to let you know about the connection of different entities, but at this level, it is not enough. We are telling you in detail about all types of frameworks that are in style because of their latest features. So before we start, have a look at the list of concepts that will be covered today:
Introduction to the frameworks of deep learning.
Why do we require frameworks in deep learning?
What are some important deep learning frameworks?
What is TensorFlow and for which purpose of using TensorBoard?
Why Keras is famous?
What is the relationship between python and PyTorch?
How can we choose the best framework?
Deep learning is a complex field of machine learning, and it is important to have command over different types of tools and tricks so that you may design, train, and understand several types of neural networks efficiently with the minimum amount of time. Frameworks are used in many different types of programming languages, and this is the software that, by combining different tools, improves and simplifies the operation of the programming language.
The best thing about the frameworks is that they allow you to train their models without knowing or bothering about the algorithms that are running behind the programming. Isn’t it amazing to know that you will get a helping hand to understand and train your model without any worries? Once you know much about the different frameworks, it will be clear to you how these frameworks do some specific types of tasks to make your training process easy and interesting.
In the beginning, when you start the programming of the deep learning process by hand, you will see some interesting results related to your task. Yet, when you move towards complex tasks or when you are at the intermediate level, you will realize that it is strenuous and time-consuming to perform a simple task at a higher level. Moreover, the repetition of the same code can sometimes make you sick.
Usually, the need for a framework arises when you start working with advanced neural networks such as convolutional neural networks, or simply CNN, where the involvement of images and video makes the task difficult and time-consuming. These frameworks have pre-defined types of networks and also provide you with an easy way to access a great deal of information.
With the advancement of deep learning, many organizations are working to make it more user-friendly so that more people can use it for advanced technologies. It is one of the reasons behind the popularity of deep learning that a great deal of deep learning frameworks is introduced every year. We have analyzed different platforms and researched different reports. We found some amazing frameworks, and our experts have been checking them for a long time to provide you with the best framework for your learning. Here is the list of the frameworks that we will discuss in detail with you, along with the pros and cons of each.
Tensorflow
Keras
PyTorch
Theano
DL4J
Lasagna
Caffe
Chainer
We are not going to discuss all of them because it may be confusing for you to understand all the frameworks. Moreover, we believe in smart working, and therefore, we are simply discussing the most popular frameworks so that you may learn the way to compare different parameters, and after that, you will get the perfect way to make modules, train, and test the projects in different ways for smart working.
The first framework to be discussed here is TensorFlow, which is undoubtedly the most popular framework for deep learning because of its easy availability and great performance. The backbone of this platform is directly connected to Google’s brain team, which has represented it for deep learning and provided easy access to almost all types of users. It supports Python and some other programming languages, and the good thing about it is that it also works with dataflows. This point makes it more useful because, when dealing with different types of neural networks, it is extremely useful to understand the progress and the efficiency of your model.
Another important point to notice about TensorFlow is, it creates models that are undemanding to build and contain robust.
A plus point about this framework is another large package called TensorBoard. There are several advantages to this fabulous data package, but some of them are listed below:
The basic working of this package is to provide data visualization to the user, which is a great step for the ease of the user, but unfortunately, people are less aware of this, although it is a useful item.
Another advantage of tensorBoard is that it makes the sharing of the data with the shareholders easy and comfortable because of its fantastic data display.
You can use different packages with the help of TensorBoard.
You can get other basic information about TensorFlow by paying attention to the following table:
TensorFlow |
|
Releasing Dates |
November 9, 2015, and January 21, 2021. |
Programming Languages |
Python, C++, CUDA |
category |
Library of machine learning |
Name of Platforms |
JavaScript, Linux, Windows, Android, macOS, |
License |
Apache License 2.0 |
Website’s Link |
|
The next on the list is another famous and useful library for deep learning that most of you may know about. Keras is one of the favourite frameworks for deep learning developers because of its demand and open-source contributors. An estimate says that 35,000+ users are making this platform more and more popular.
Keras is written in the Python programming language, and it can support high-level neural networks. You must keep in mind that Keras is an API, and it runs on top of highly popular libraries such as TensorFlow and Theano. You will see this in action in our coming lectures. Because of its user-friendly features, Keras is used by a large number of companies as a startup and is a great tool for researchers and students.
The most prominent feature of Keras is its user-friendly nature. It seems that the developers have presented this framework to all types of users, no matter if they are professionals or learners. If users encounter an error or issue, they should receive transparent and actionable feedback.
For me, modularity is a useful feature because it makes tasks easier and faster. Moreover, the errors are easily detectable, which is a big relief. The modularity is shown with a graphical representation or sequence of information so that the user may understand it well.
Here's some good news for researchers and students. Keras is one of the best options for researchers because it allows them to make their own modules and test them according to their choice. Adding the modules to your project is super easy on Keras, and you can do advanced research without any issues.
Keras |
|
Releasing Dates |
March 27, 2015, and June 17, 2020. |
Programming Languages |
N/A |
category |
Almost all types of neural networks |
Name of Platforms |
Cross-platforms |
License |
Massachusetts Institute of Technology (MIT) |
Website’s Link |
|
Our next topic of discussion is PyTorch. It is another open-source library for deep learning and is used to build complex neural networks in an easy way. The thing that attracted me to this library is the platform that introduced it. It is developed under the umbrella of Facebook's AI Research Lab. I'm curious about how powerful it is because every time I open my Facebook app, I find the content I've chosen and wished for. People have been using it for deep learning, computer vision, and other related purposes since 2016, as it is a free open source for AI and related fields. By using PyTorch with other powerful libraries such as NumPy, Tensor, etc., you can build, train, and test complex neural networks. Because of its easy accessibility, PyTorch is popular among people. The versatility of the programming languages and different libraries working with PyTorch is another reason for its success.
A feature that makes it easy to use is its hybrid front-end nature, which makes it faster and more flexible to use. The user-friendly nature of this library makes it the perfect choice for professionally non-technical people.
With the help of its torch-distributed backend, you can have optimal performance all the time and keep an eye on the training and working of the network you are using. It has a powerful architecture, and on an advanced level, you can use it for complex neural networks.
As you can guess, PyTorch is run with the help of Python, which is one of the most popular and trending programming languages, and the plus point is that it allows many libraries to be used with it and work on neural networks.
PyTorch |
|
Releasing Dates |
September 2016, and December 10, 2020. |
Category |
Machine learning library, Deep learning library |
Name of Platforms |
Cross-platforms |
License |
Berkeley Software Distribution (BSD) |
Website’s Link |
|
Since now, we have been talking about the frameworks, and the basic purpose of discussing different features was to tell you the difference between them. A beginner may believe that all frameworks are the same, but this is incorrect because each framework has its own specialities and the difficulty level of using them varies. So, if you want to work perfectly in your field, first you must learn how to choose the best framework for your task. Keep in mind, these are not the only points that you need to know; all the parameters change according to the complexity of your project.
Not all projects are the same. You do not have to use the same framework every time. You must know more than one framework and choose one according to your needs. For example, for simple tasks, there is no need to use a complex framework or a higher-level neural network. There is versatility in the projects in deep learning, and you have to understand the needs of your project every time before choosing your required framework. As a result, before you begin, you should ask yourself the following questions about the project:
What are you using? Modern deep learning framework or are you interested in the classic ML algorithms?
What is your preferred programming language for the AI modules?
For the process of scaling, which type of hardware and software do you have for the working?
Once you know the different features of the frameworks, you may get the answers to all the questions given above.
Machine learning is a vast field, and with the advancement of different techniques, there is always a need to compare the parameters all the time. Different algorithms follow different types of parameters, and you must know all of them while choosing your framework. Moreover, you must also know if you are going with the classic built-in machine-learning algorithms or want to create your own.
Hence, we learned a lot about the frameworks of deep learning today. It was an interesting lecture where we saw the detailed introduction of the framework and compared TensorFlow, PyTorch, and Keras by discussing several features and requirements of all these frameworks. We will see all the discussion in action in the coming lectures. The purpose of this session was to clear the concept of working and variations in the framework and in this way, you have the idea how deep learning is useful in different ways. Researcher are working in deep learning and it is one of the basic reason behind the develorpment of different frameworks.