Book Image

Hands-On Convolutional Neural Networks with TensorFlow

By : Iffat Zafar, Giounona Tzanidou, Richard Burton, Nimesh Patel, Leonardo Araujo
Book Image

Hands-On Convolutional Neural Networks with TensorFlow

By: Iffat Zafar, Giounona Tzanidou, Richard Burton, Nimesh Patel, Leonardo Araujo

Overview of this book

Convolutional Neural Networks (CNN) are one of the most popular architectures used in computer vision apps. This book is an introduction to CNNs through solving real-world problems in deep learning while teaching you their implementation in popular Python library - TensorFlow. By the end of the book, you will be training CNNs in no time! We start with an overview of popular machine learning and deep learning models, and then get you set up with a TensorFlow development environment. This environment is the basis for implementing and training deep learning models in later chapters. Then, you will use Convolutional Neural Networks to work on problems such as image classification, object detection, and semantic segmentation. After that, you will use transfer learning to see how these models can solve other deep learning problems. You will also get a taste of implementing generative models such as autoencoders and generative adversarial networks. Later on, you will see useful tips on machine learning best practices and troubleshooting. Finally, you will learn how to apply your models on large datasets of millions of images.
Table of Contents (17 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Chapter 6. Autoencoders, Variational Autoencoders, and Generative Adversarial Networks

This chapter will cover a slightly different kind of model to what we have seen so far. All the models presented until now belong to a type of model called a discriminative model. Discriminative models aim to find the boundaries between different classes. They are interested in finding P(Y|X)—the probability of output Y given some input X. This is the natural probability distribution to work with for classification, as you usually want to find a label Y, given some input X.

However, there is another type of model called a generative model. Generative models are built to model the distributions of different classes. They are interested in finding P(Y, X)—the probability distribution of output Y and input X occurring together. In theory, if you can capture the probability distribution of classes in your data, you will know more about it, and you will be able to calculate P(Y|X) using Bayes rule.

Generative...