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Introduction to Deep Learning
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Deep Learning Tutorial

Last Updated : 16 Dec, 2024
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Deep Learning tutorial covers the basics and more advanced topics, making it perfect for beginners and those with experience. Whether you're just starting or looking to expand your knowledge, this guide makes it easy to learn about the different technologies of Deep Learning.

  • Deep Learning is a branch of Artificial Intelligence (AI) that enables machines to learn from large amounts of data.
  • It uses neural networks with many layers to automatically find patterns and make predictions.
  • It is very useful for tasks like image recognition, language translation, and speech processing.
  • Deep learning models learn directly from data, without the need for manual feature extraction.
  • Popular applications of Deep Learning include self-driving cars, chatbots, medical image analysis, and recommendation systems.

Introduction to Neural Networks

Neural Networks are fundamentals of deep learning inspired by human brain. It consists of layers of interconnected nodes, or "neurons," each designed to perform specific calculations. These nodes receive input data, process it through various mathematical functions, and pass the output to subsequent layers.

  • Biological Neurons vs Artificial Neurons
  • Single Layer Perceptron
  • Multi-Layer Perceptron
  • Artificial Neural Networks (ANNs)

Basic Components of Neural Networks

The basic components of neural network are:

  • Neurons
  • Layers in Neural Networks
  • Weights and Biases
  • Forward Propagation
  • Activation Functions
  • Loss Functions
  • Backpropagation
  • Learning Rate

Optimization Algorithm in Deep Learning

Optimization algorithms in deep learning are used to minimize the loss function by adjusting the weights and biases of the model. The most common ones are:

  • Gradient Descent
  • Stochastic Gradient Descent (SGD)
  • Mini-batch Gradient Descent
  • RMSprop (Root Mean Square Propagation)
  • Adam (Adaptive Moment Estimation)

Convolutional Neural Networks (CNNs)

Convolutional Neural Networks (CNNs) are a class of deep neural networks that are designed for processing grid-like data, such as images. They use convolutional layers to automatically detect patterns like edges, textures, and shapes in the data.

  • Basics of Digital Image Processing
  • Need for CNN
  • Strides
  • Padding
  • Convolutional Layers
  • Pooling Layers
  • Fully Connected Layers
  • Batch Normalization
  • Backpropagation in CNNs

To learn about the implementation, you can explore the following articles:

  • CNN based Image Classification using PyTorch
  • CNN based Images Classification using TensorFlow

CNN Based Architectures

There are various architectures in CNNs that have been developed for specific kinds of problems, such as:

  1. LeNet-5
  2. AlexNet
  3. VGG-16 Network
  4. VGG-19 Network
  5. GoogLeNet/Inception
  6. ResNet (Residual Network)
  7. MobileNet

Recurrent Neural Networks (RNNs)

Recurrent Neural Networks (RNNs) are a class of neural networks that are used for modeling sequence data such as time series or natural language.

  • Vanishing Gradient and Exploding Gradient Problem
  • How RNN Differs from Feedforward Neural Networks
  • Backpropagation Through Time (BPTT)
  • Types of Recurrent Neural Networks
  • Bidirectional RNNs
  • Long Short-Term Memory (LSTM)
  • Bidirectional Long Short-Term Memory (Bi-LSTM)
  • Gated Recurrent Units (GRU)

Generative Models in Deep Learning

Generative models generate new data that resembles the training data. The key types of generative models include:

  • Generative Adversarial Networks (GANs)
  • Autoencoders
  • Restricted Boltzmann Machines (RBMs)

Variants of Generative Adversarial Networks (GANs)

GANs consists of two neural networks - the generators and the discriminator that compete with each other in a game like framework. The variants of GANs include the following:

  • Deep Convolutional GAN (DCGAN)
  • Conditional GAN (cGAN)
  • Cycle-Consistent GAN (CycleGAN)
  • Super-Resolution GAN (SRGAN)
  • Wasserstein GAN (WGAN)
  • StyleGAN

Types of Autoencoders

Autoencoders are neural networks used for unsupervised learning that learns to compress and reconstruct data. There are different types of autoencoders that serve different purpose such as noise reduction, generative modelling and feature learning.

  • Sparse Autoencoder
  • Denoising Autoencoder
  • Undercomplete Autoencoder
  • Contractive Autoencoder
  • Convolutional Autoencoder
  • Variational Autoencoder

Deep Reinforcement Learning (DRL)

Deep Reinforcement Learning combines the representation learning power of deep learning with the decision-making ability of reinforcement learning. It enables agents to learn optimal behaviors in complex environments through trial and error, using high-dimensional sensory inputs.

  • Reinforcement Learning
  • Markov Decision Processes
  • Function Approximation

Key Algorithms in Deep Reinforcement Learning

  • Deep Q-Networks (DQN)
  • REINFORCE
  • Actor-Critic Methods
  • Proximal Policy Optimization (PPO)
Deep-Learning-Tutorial


Application of Deep Learning

  • Image Recognition: Identifying objects, faces, and scenes in photos and videos.
  • Natural Language Processing (NLP): Powering language translation, chatbots, and sentiment analysis.
  • Speech Recognition: Converting spoken language into text for virtual assistants like Siri and Alexa.
  • Medical Diagnostics: Detecting diseases from X-rays, MRIs, and other medical scans.
  • Recommendation Systems: Personalizing suggestions for movies, music, and shopping.
  • Autonomous Vehicles: Enabling self-driving cars to recognize objects and make driving decisions.
  • Fraud Detection: Identifying unusual patterns in financial transactions and preventing fraud.
  • Gaming: Enhancing AI in games and creating realistic environments in virtual reality.
  • Predictive Analytics: Forecasting customer behavior, stock prices, and weather trends.
  • Generative Models: Creating realistic images, deepfake videos, and AI-generated art.
  • Robotics: Automating industrial tasks and powering intelligent drones.
  • Customer Support: Enhancing chatbots for instant and intelligent customer interactions.

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Introduction to Deep Learning
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Article Tags :
  • Deep Learning
  • AI-ML-DS
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'); $('.spinner-loading-overlay').show(); jQuery.ajax({ url: writeApiUrl + 'create-improvement-post/?v=1', type: "POST", contentType: 'application/json; charset=utf-8', dataType: 'json', xhrFields: { withCredentials: true }, data: JSON.stringify({ gfg_id: post_id }), success:function(result) { $('.spinner-loading-overlay:eq(0)').remove(); $('.improve-modal--overlay').hide(); $('.unlocked-status--improve-modal-content').css("display","none"); $('.create-improvement-redirection-to-write').attr('href',writeUrl + 'improve-post/' + `${result.id}` + '/', '_blank'); $('.create-improvement-redirection-to-write')[0].click(); }, error:function(e) { showErrorMessage(e.responseJSON,e.status) }, }); } else { if(loginData && !loginData.isLoggedIn) { $('.improve-modal--overlay').hide(); if ($('.header-main__wrapper').find('.header-main__signup.login-modal-btn').length) { $('.header-main__wrapper').find('.header-main__signup.login-modal-btn').click(); } return; } } }); $('.left-arrow-icon_wrapper').on('click',function(){ if($('.improve-modal--suggestion').is(":visible")) $('.improve-modal--suggestion').hide(); else{ } $('.improve-modal--improvement').show(); }); const showErrorMessage = (result,statusCode) => { if(!result) return; $('.spinner-loading-overlay:eq(0)').remove(); if(statusCode == 403) { $('.improve-modal--improve-content.error-message').html(result.message); jQuery('.improve-modal--overlay').show(); jQuery('.improve-modal--improvement').show(); $('.locked-status--impove-modal').css("display","block"); $('.unlocked-status--improve-modal-content').css("display","none"); $('.improve-modal--improvement').attr("status","locked"); return; } } function suggestionCall() { var editorValue = suggestEditorInstance.getValue(); var suggest_val = $(".ContentEditable__root").find("[data-lexical-text='true']").map(function() { return $(this).text().trim(); }).get().join(' '); suggest_val = suggest_val.replace(/\s+/g, ' ').trim(); var array_String= suggest_val.split(" ") //array of words var gCaptchaToken = $("#g-recaptcha-response-suggestion-form").val(); var error_msg = false; if(suggest_val != "" && array_String.length >=4){ if(editorValue.length <= 2000){ var payload = { "gfg_post_id" : `${post_id}`, "suggestion" : `${editorValue}`, } if(!loginData || !loginData.isLoggedIn) // User is not logged in payload["g-recaptcha-token"] = gCaptchaToken jQuery.ajax({ type:'post', url: "https://apiwrite.geeksforgeeks.org/suggestions/auth/create/", xhrFields: { withCredentials: true }, crossDomain: true, contentType:'application/json', data: JSON.stringify(payload), success:function(data) { if(!loginData || !loginData.isLoggedIn) { grecaptcha.reset(); } jQuery('.spinner-loading-overlay:eq(0)').remove(); jQuery('.suggest-bottom-btn').css("display","none"); $('#suggestion-section-textarea').hide() $('.thank-you-message').css('display', 'flex'); $('.suggestion-section').css('display', 'none'); jQuery('#suggestion-modal-alert').hide(); }, error:function(data) { if(!loginData || !loginData.isLoggedIn) { grecaptcha.reset(); } jQuery('.spinner-loading-overlay:eq(0)').remove(); jQuery('#suggestion-modal-alert').html("Something went wrong."); jQuery('#suggestion-modal-alert').show(); error_msg = true; } }); } else{ jQuery('.spinner-loading-overlay:eq(0)').remove(); jQuery('#suggestion-modal-alert').html("Minimum 4 Words and Maximum Words limit is 1000."); jQuery('#suggestion-modal-alert').show(); jQuery('.ContentEditable__root').focus(); error_msg = true; } } else{ jQuery('.spinner-loading-overlay:eq(0)').remove(); jQuery('#suggestion-modal-alert').html("Enter atleast four words !"); jQuery('#suggestion-modal-alert').show(); jQuery('.ContentEditable__root').focus(); error_msg = true; } if(error_msg){ setTimeout(() => { jQuery('.ContentEditable__root').focus(); jQuery('#suggestion-modal-alert').hide(); }, 3000); } } document.querySelector('.suggest-bottom-btn').addEventListener('click', function(){ jQuery('body').append('
'); jQuery('.spinner-loading-overlay').show(); if(loginData && loginData.isLoggedIn) { suggestionCall(); return; } // script for grecaptcha loaded in loginmodal.html and call function to set the token setGoogleRecaptcha(); }); $('.improvement-bottom-btn.create-improvement-btn').click(function() { //create improvement button is clicked $('body').append('
'); $('.spinner-loading-overlay').show(); // send this option via create-improvement-post api jQuery.ajax({ url: writeApiUrl + 'create-improvement-post/?v=1', type: "POST", contentType: 'application/json; charset=utf-8', dataType: 'json', xhrFields: { withCredentials: true }, data: JSON.stringify({ gfg_id: post_id }), success:function(result) { $('.spinner-loading-overlay:eq(0)').remove(); $('.improve-modal--overlay').hide(); $('.create-improvement-redirection-to-write').attr('href',writeUrl + 'improve-post/' + `${result.id}` + '/', '_blank'); $('.create-improvement-redirection-to-write')[0].click(); }, error:function(e) { showErrorMessage(e.responseJSON,e.status); }, }); });
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