Advance Machine Learning | 7. Deep Learning & Neural Networks by Abraham | Learn Smarter
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7. Deep Learning & Neural Networks

Deep learning has fundamentally changed how computers process unstructured data through the use of artificial neural networks inspired by the human brain. Key principles include architectures like multi-layer perceptrons, convolutional neural networks, and recurrent neural networks. Various optimization methods and regularization techniques are critical for training these models effectively. The chapter also explores advanced frameworks that have made deep learning accessible across different domains, ranging from image processing to natural language processing and autonomous systems.

Sections

  • 7

    Deep Learning & Neural Networks

    This section provides an overview of deep learning and neural networks, focusing on the fundamentals, architectures, training techniques, loss functions, optimization methods, and applications in real-world scenarios.

  • 7.1

    Fundamentals Of Neural Networks

    This section introduces the foundational concepts of neural networks, focusing on their biological inspiration, the artificial neuron model, and the structure of multi-layer perceptrons.

  • 7.1.1

    Biological Inspiration

    This section discusses how artificial neural networks (ANNs) are inspired by the biological structure of the human brain, focusing on the role of neurons and synapses.

  • 7.1.2

    Artificial Neuron (Perceptron)

    An artificial neuron, or perceptron, processes input signals using weights and an activation function to produce an output.

  • 7.1.3

    Multi-Layer Perceptron (Mlp)

    Multi-Layer Perceptrons are neural networks consisting of multiple layers of neurons, including an input layer, hidden layers, and an output layer.

  • 7.2

    Activation Functions

    This section explains activation functions, their importance in introducing non-linearity to neural networks, and discusses common types.

  • 7.2.1

    Importance Of Non-Linearity

    Non-linearity is crucial in deep learning as it allows models to learn complex patterns from data.

  • 7.2.2

    Common Activation Functions

    This section discusses various common activation functions used in neural networks, including their characteristics and applications.

  • 7.3

    Forward Propagation

    Forward propagation is the process of computing neural network outputs by propagating inputs through layers using weights and activation functions.

  • 7.5

    Backpropagation And Gradient Descent

    Backpropagation and gradient descent are essential algorithms used in training artificial neural networks for optimizing weights and minimizing errors.

  • 7.5.1

    What Is Backpropagation?

    Backpropagation is a key algorithm used in training neural networks, focusing on propagating errors backwards to calculate gradients for weight updates.

  • 7.5.2

    Optimization With Gradient Descent

    This section explains how gradient descent is used to optimize neural networks by updating weights based on gradients.

  • 7.6

    Advanced Optimization Techniques

    This section covers various advanced optimization techniques in deep learning, focusing on gradient descent variants and learning rate scheduling.

  • 7.6.1

    Gradient Descent Variants

    This section discusses various adaptations of gradient descent optimization techniques used in training neural networks.

  • 7.6.2

    Learning Rate Scheduling

    Learning Rate Scheduling is a critical component in optimizing deep learning models, altering the learning rate during training to improve convergence and performance.

  • 7.7

    Regularization In Neural Networks

    Regularization techniques are essential in neural networks to prevent overfitting, thereby enhancing model generalization and performance.

  • 7.7.1

    Overfitting In Deep Learning

    Overfitting is a critical challenge in deep learning where the model learns the training data too well, resulting in poor performance on unseen data.

  • 7.7.2

    Regularization Techniques

    Regularization techniques are essential strategies in deep learning to prevent overfitting by constraining a model's capacity.

  • 7.8

    Deep Learning Architectures

    This section discusses various deep learning architectures, focusing on Convolutional Neural Networks (CNNs), Recurrent Neural Networks (RNNs), LSTM networks, and Gated Recurrent Units (GRUs).

  • 7.8.1

    Convolutional Neural Networks (Cnns)

    CNNs are specialized neural networks used primarily for image recognition tasks, employing convolutional, pooling, and flattening layers to extract features from images.

  • 7.8.2

    Recurrent Neural Networks (Rnns)

    Recurrent Neural Networks (RNNs) are designed to process sequential data, addressing challenges such as the vanishing gradient problem.

  • 7.8.3

    Long Short-Term Memory (Lstm) Networks

    LSTM Networks enhance the capabilities of traditional RNNs by effectively managing long-range dependencies through specialized memory cells and gating mechanisms.

  • 7.8.4

    Gated Recurrent Unit (Gru)

    The Gated Recurrent Unit (GRU) is a simplified version of Long Short-Term Memory (LSTM) networks, designed to enhance performance in handling sequential data.

  • 7.9

    Training Deep Neural Networks

    This section discusses key aspects of training deep neural networks, including dataset preparation, training phases, and hyperparameter tuning.

  • 7.9.1

    Dataset Preparation

    This section focuses on the critical steps of preparing datasets for training deep neural networks, emphasizing normalization and data augmentation.

  • 7.9.2

    Training Phases

    This section outlines the key phases involved in training deep neural networks, focusing on epochs, iterations, and batch size.

  • 7.9.3

    Hyperparameter Tuning

    Hyperparameter tuning is a critical process in optimizing deep learning models by adjusting parameters that govern the training process.

  • 7.10

    Transfer Learning

    Transfer Learning is a crucial technique in deep learning that allows the use of pre-trained models for new tasks, thereby saving time and data.

  • 7.10.1

    Concept And Benefits

    Transfer learning allows users to leverage pre-trained models for various tasks, saving time and data while enhancing performance.

  • 7.10.2

    Popular Pre-Trained Models

    This section introduces notable pre-trained models such as VGG, ResNet, Inception, and BERT used for various tasks in deep learning.

  • 7.11

    Deep Learning Frameworks

    This section introduces three prominent deep learning frameworks: TensorFlow, PyTorch, and Keras, highlighting their unique features and use cases.

  • 7.11.1

    Tensorflow

    TensorFlow is a powerful open-source framework developed by Google, designed for numerical computations using symbolic computation graphs.

  • 7.11.2

    Pytorch

    PyTorch is a deep learning framework developed by Facebook that uses dynamic computation graphs, making it flexible and intuitive for developers.

  • 7.11.3

    Keras

    Keras is a high-level API for building and training deep learning models, designed to facilitate rapid prototyping.

  • 7.12

    Applications Of Deep Learning

    Deep learning has numerous real-world applications, transforming various fields like image processing, natural language processing, speech recognition, and autonomous systems.

  • 7.12.1

    Image Processing

    This section discusses the applications of deep learning in image processing, highlighting significant tasks such as object detection, facial recognition, and medical imaging.

  • 7.12.2

    Natural Language Processing (Nlp)

    Natural Language Processing (NLP) enables computers to understand, interpret, and respond to human language.

  • 7.12.3

    Speech Recognition

    Speech recognition systems automate the process of converting spoken language into text, enabling various applications such as voice assistants.

  • 7.12.4

    Autonomous Systems

    This section discusses the applications of autonomous systems, focusing on self-driving cars, drones, and robotics.

References

AML ch7.pdf

Class Notes

Memorization

What we have learnt

  • Deep learning is a subset o...
  • Artificial neural networks ...
  • Loss functions and optimiza...

Final Test

Revision Tests