# Introduction to Deep Learning with PyTorch

Learn the power of deep learning in PyTorch. Build your first neural network, adjust hyperparameters, and tackle classification and regression problems.

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## Course Description

## Introduction to Deep Learning with PyTorch

Deep learning is everywhere: in smartphone cameras, voice assistants, and self-driving cars. It has even helped discover protein structures and beat humans at the game of Go. In this course, you will discover this powerful technology and learn how to leverage it using PyTorch, one of the most popular deep learning libraries.## Train your first neural network

First, this course tackles the difference between deep learning and "classic" machine learning and will introduce neural networks. You will learn about the training process of a neural network and how to write a training loop. To do so, you will create loss functions for regression and classification problems and leverage PyTorch to calculate their derivatives.## Evaluate and improve your model

In the second half of this course, you will learn about the different hyperparameters you can adjust to improve your model. After learning about the different components of a neural network, you will be able to create larger and more complex architectures. To measure your model performances, you will leverage TorchMetrics, a PyTorch library for model evaluation. By the end of this course, you will be able to leverage PyTorch to solve classification and regression problems on both tabular and image data using deep learning.For Business

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### Introduction to PyTorch, a Deep Learning Library

**Free**Self-driving cars, smartphones, search engines... Deep learning is now everywhere. Before you begin building complex models, you will become familiar with PyTorch, a deep learning framework. You will learn how to manipulate tensors, create PyTorch data structures, and build your first neural network in PyTorch.

Introduction to deep learning with PyTorch50 xpMachine learning vs. deep learning100 xpCreating tensors and accessing attributes100 xpCreating tensors from NumPy arrays100 xpCreating our first neural network50 xpYour first neural network100 xpStacking linear layers100 xpDiscovering activation functions50 xpActivate your understanding!50 xpThe sigmoid and softmax functions100 xp - 2
### Training Our First Neural Network with PyTorch

To train a neural network in PyTorch, you will first need to understand the job of a loss function. You will then realize that training a network requires minimizing that loss function, which is done by calculating gradients. You will learn how to use these gradients to update your model's parameters, and finally, you will write your first training loop.

Running a forward pass50 xpBuilding a binary classifier in PyTorch100 xpFrom regression to multi-class classification100 xpUsing loss functions to assess model predictions50 xpCreating one-hot encoded labels100 xpCalculating cross entropy loss100 xpUsing derivatives to update model parameters50 xpEstimating a sample100 xpAccessing the model parameters100 xpUpdating the weights manually100 xpUsing the PyTorch optimizer100 xpWriting our first training loop50 xpUsing the MSELoss100 xpWriting a training loop100 xp - 3
### Neural Network Architecture and Hyperparameters

Hyperparameters are parameters, often chosen by the user, that control model training. The type of activation function, the number of layers in the model, and the learning rate are all hyperparameters of neural network training. Together, we will discover the most critical hyperparameters of a neural network and how to modify them.

Discovering activation functions between layers50 xpImplementing ReLU100 xpImplementing leaky ReLU100 xpUnderstanding activation functions50 xpA deeper dive into neural network architecture50 xpCounting the number of parameters100 xpManipulating the capacity of a network100 xpLearning rate and momentum50 xpExperimenting with learning rate100 xpExperimenting with momentum100 xpLayer initialization and transfer learning50 xpFine-tuning process100 xpFreeze layers of a model100 xpLayer initialization100 xp - 4
### Evaluating and Improving Models

Training a deep learning model is an art, and to make sure our model is trained correctly, we need to keep track of certain metrics during training, such as the loss or the accuracy. We will learn how to calculate such metrics and how to reduce overfitting using an image dataset as an example.

A deeper dive into loading data50 xpUsing the TensorDataset class100 xpFrom data loading to running a forward pass100 xpEvaluating model performance50 xpWriting the evaluation loop100 xpCalculating accuracy using torchmetrics100 xpFighting overfitting50 xpExperimenting with dropout100 xpUnderstanding overfitting50 xpImproving model performance50 xpImplementing random search100 xpWrap-up video50 xp

In the following tracks

Deep Learning in PythonDeveloping Large Language ModelsMachine Learning Fundamentals with PythonMachine Learning Scientist with PythonCollaborators

Audio Recorded By

Maham Khan

See MoreSenior Data Scientist, YouView TV

Maham is a Data Scientist on a mission to make data skills accessible for everyone. She's worked on creating toolkits and exploring experimental applications of data science for urban analytics, disaster risk management, and climate change mitigation at the World Bank. She has a background in Experimental Psychology and Philosophy from the University of Oxford and Urban Data Science from NYU.

Thomas Hossler

See MoreSenior Machine Learning Engineer

Thomas is passionate about AI, the environment, and education, and is always looking for new challenges. He specializes in computer vision, machine learning model training and deployment (cloud and edge), and data pipelines.

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