Getting Started with PyTorch
Chapter 1: PyTorch Fundamentals and Setup
What is PyTorch?
Installation and Environment Configuration
Introduction to Tensors
Creating Tensors
Basic Tensor Operations
Relationship with NumPy
Hands-on Practical: Setup and Tensor Basics
Quiz for Chapter 1
Chapter 2: Advanced Tensor Manipulations
Tensor Indexing and Slicing
Reshaping and Rearranging Tensors
Joining and Splitting Tensors
Understanding Broadcasting
Tensor Data Types
CPU vs GPU Tensors
Practice: Tensor Manipulation Techniques
Quiz for Chapter 2
Chapter 3: Automatic Differentiation with Autograd
The Concept of Automatic Differentiation
PyTorch Computation Graphs
Tensors and Gradient Calculation (
requires_grad)Performing Backpropagation (
backward())Accessing Gradients (
.grad)Disabling Gradient Tracking
Gradient Accumulation
Hands-on Practical: Autograd Exploration
Quiz for Chapter 3
Chapter 4: Building Models with
torch.nnThe
torch.nn.Module Base ClassDefining Custom Network Architectures
Common Layers: Linear, Convolutional, Recurrent
Activation Functions (ReLU, Sigmoid, Tanh)
Sequential Containers for Simple Models
Loss Functions (
torch.nn losses)Optimizers (
torch.optim)Practice: Building a Simple Network
Quiz for Chapter 4
Chapter 5: Efficient Data Handling
The Need for Specialized Data Loaders
Working with
torch.utils.data.DatasetBuilt-in Datasets (e.g., TorchVision)
Data Transformations (
torchvision.transforms)Using
torch.utils.data.DataLoaderCustomizing DataLoader Behavior
Hands-on Practical: Creating a Data Pipeline
Quiz for Chapter 5
Chapter 6: Implementing the Training Loop
Anatomy of a Training Loop
Setting Up the Model, Loss, and Optimizer
Iterating Through Data with DataLoader
The Forward Pass: Getting Predictions
Calculating the Loss
Backpropagation: Computing Gradients
Updating Weights with the Optimizer
Zeroing Gradients
Implementing an Evaluation Loop
Saving and Loading Model Checkpoints
Hands-on Practical: Complete Training Routine
Quiz for Chapter 6
Chapter 7: Introduction to Common Architectures
Convolutional Neural Networks (CNNs) Overview
Building a Simple CNN in PyTorch
Understanding Input/Output Shapes for CNN Layers
Recurrent Neural Networks (RNNs) Overview
Building a Simple RNN in PyTorch
Handling Sequential Data Input for RNNs
Brief Mention of LSTM and GRU
Practice: Implementing Basic CNN and RNN
Quiz for Chapter 7
Chapter 8: Monitoring and Debugging Models
Common Errors in PyTorch Development
Debugging Shape Mismatches
Checking Device Placement (CPU/GPU)
Inspecting Gradients for Issues (Vanishing/Exploding)
Visualizing Training Progress with TensorBoard
Logging Metrics during Training/Evaluation
Using Python Debugger (pdb) with PyTorch
Practice: Debugging and Visualization
Quiz for Chapter 8
Calculating the Loss
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- torch.nn.modules.loss, PyTorch Core Team, 2024 (PyTorch Foundation) - Official documentation for PyTorch's loss functions, including
MSELoss,CrossEntropyLoss, andBCEWithLogitsLoss, detailing their usage and parameters. - Deep Learning, Ian Goodfellow, Yoshua Bengio, and Aaron Courville, 2016 (MIT Press) - A comprehensive textbook explaining the mathematical and conceptual foundations of loss functions and their role in neural network training.
- Linear Classification: Support Vector Machine, Softmax, Andrej Karpathy and Fei-Fei Li, 2023 - Stanford CS231n lecture notes covering the theoretical background and practical aspects of loss functions, especially cross-entropy, for classification tasks.
- Pattern Recognition and Machine Learning, Christopher M. Bishop, 2006 (Springer) - A foundational textbook offering a statistical and probabilistic perspective on various loss functions, including squared error and cross-entropy, within a broader machine learning context.