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Home » AI » What is Deep Learning (DL)? Definition, Its Type, and How Does it Work?

What is Deep Learning (DL)? Definition, Its Type, and How Does it Work?

Learn about Deep Learning (DL) in this comprehensive guide. Understand its definition, various types, and how it works. Explore the fundamental principles behind DL, including neural networks and their applications.

tech chilli logo by Tech Chilli Desk
Monday, 27 May 2024, 0:34 AM
in AI
Deep Learning

Deep Learning

Deep Learning is a process in artificial intelligence by which they can learn and function in a way quite similar to how human brains function. It uses a Deep Neural Network (DNN)to solve multistep and complex problems. These Neural Networks are quite similar to how neurons in our brains function and help in solving issues like human brains are capable of.

Deep Learning is a Machine Learning program that can perform analytical tasks without human intervention. For example a voice assistant cell phones or detecting fraud credit card agencies and even perform human capabilities of doing a physical task like a self-driving car.

Deep learning is a scope under machine learning and has implications for various markets globally. From the automotive industry to healthcare, it has a variety of uses. This is because Deep Learning allows the system to simulate human function and learning capabilities.

The process involves using a Deep Neural Network (DNN) where the main d(DNN),s fed and based upon that data, it gives the AI to soex issues.

The market size of deep learning has grown from 69 Billion USD to 1185 Billion USD in the next 10 years. Thus there will be a massive 32.5% growth rate between 2024 and 2033

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Types of Deep Learning

There are different types of Deep Learning depending on different types of algorithms and architectures. Each specific program allows the AI to perform its own designated task for which it was made. Below mentioned are some of the most common types:

  1. Convolutional Neural Networks (CNN): These are mainly designed to perform image or video-related work. The tasks include image or video recognition. They have a multi-layered data structure that allows them to have multiple data and screen them and based upon the pattern it develops an algorithm and performs the task.
  2. Recurrent Neural Network (RNN): These are programmed for sequential data analysis like language or speech recognition. This allows the AI to process data over time and makes the RNN very efficient for solving complex dynamic issues.
  3. Long and Short-Term Memory (LSTM) Networks: These are special types of RNNs that are programmed to mitigate gradient problems. They can perform this by introducing a program that can have a certain memory and can control the 3 gates i) Input Gate ii) Output Gate iii) Forget Gate. These gates have to power to maintain when to keep a particular information and when to delete that particular data according to the task that it is asked to perform
  4. Gated Recurrent Unit (GRU) Network: They are quite similar to that of the LSTM Network but with a much simpler architecture. Unlike the above-mentioned Network they only have 2 gates i) Update Gate and ii) Reset Gate. Based on this the system can either update the information or delete/ reset the information provided to it.
  5. Autoencoders: They are mainly programmed for unsupervised learning tasks. Generally include data compression or other similar tasks. They have an encoder and a decoder only. By this, they can minimise the error and can learn very efficiently.
  6. General Adversarial Networks (GANs): They are programmed to generate certain tasks like image synthesis style transfer. They have 2 components, i) a generator whose task is to produce or generate samples and ii) a discriminator whose main function is to differentiate between the real and artificial samples. 

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Functionality of Deep Learning

We should learn about the ANN before learning about the functions of DL.

  1. Concept of Artificial Neural Network: These are like small module programs and can perform tasks. It has interconnected nodes that can be grouped and categorized under 3 groups 

i) Input Layer

ii) Output Layer

iii) Hidden Layer

Source: Zendesk

  1. Function of Deep Neural Network: DNNs are similar to ANN as they both have multiple layers and are hidden as well. This enables the program to analyze and extract complex data. 
  2. Significance of Activation Function: They are similar to mathematical functions. They apply filters to the data being fed into the neural network. Thus it helps in the performance of the AI and adapts to new data.
  3. Importance of Backpropagation: The main purpose of this is to make the AI perform and get better with each new task it is asked to do. It performs a task in the settings that are already given to it, and then again in case it creates an inaccurate result, it will memorize it and change its setting to adapt and correct itself to the new one.
  4. Deep Learning Training Modules: Deep Learning Module can be successful only if a huge dataset is available to it so that it can learn and change its settings to provide accurate results. Thus with each new dataset, it will be able to provide more and more accurate responses.
  5. Optimizing Deep Learning Models: The performance of this model depends upon some crucial factors: efficiency, precision, F1 Score, and visual interpretability. These models can further be refined to improve their adaptability and efficiency.

Also, Read – What is Generative AI

How does Deep Learning Work?

Deep Learning includes lots of internal processes working together. The steps are : 

  1. Neural Network and its Layers: Each neural network as described previously has 3 layers, an input layer, an output layer, and a hidden layer.
  2. Learning Process: Deep Learning is trained based on huge data sets and comprising different types of datasets. This includes 3 steps

i) Forward Propagation: Data gets transferred from the input layer to the output layer.

ii) Loss Calculation: In this step, we analyze the final response of the AI model compare it with the Input dataset and calculate what is the error rate or the loss percentage of the response.

iii) Backpropagation: The error is then analyzed and certain changes are made to the algorithm so that it can learn from the error made in the task implement the correction and be efficient on the next task.

  1. Optimization: There are certain programs that are implemented to analyze and optimize the neural network to increase its efficiency.
  2. Repeated Training: The models are being tested multiple times and each new time new data are being fed to the system to refine the effectiveness of the AI.
  3. Testing: After all these aforementioned steps, the model is tested on unlabelled new data to test its performance.

Conclusion

The scope of Deep Learning is ever-evolving with technical developments and massive technological boom. At this rate, it is going to revolutionize the way we communicate with AI models. It is a versatile and also a very powerful technology and it has the capacity to unlock new scopes that we still have not discovered yet. It is already capable and made remarkable changes starting from healthcare to the transportation world. 

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