Book Image

Neural Networks with Keras Cookbook

By : V Kishore Ayyadevara
Book Image

Neural Networks with Keras Cookbook

By: V Kishore Ayyadevara

Overview of this book

This book will take you from the basics of neural networks to advanced implementations of architectures using a recipe-based approach. We will learn about how neural networks work and the impact of various hyper parameters on a network's accuracy along with leveraging neural networks for structured and unstructured data. Later, we will learn how to classify and detect objects in images. We will also learn to use transfer learning for multiple applications, including a self-driving car using Convolutional Neural Networks. We will generate images while leveraging GANs and also by performing image encoding. Additionally, we will perform text analysis using word vector based techniques. Later, we will use Recurrent Neural Networks and LSTM to implement chatbot and Machine Translation systems. Finally, you will learn about transcribing images, audio, and generating captions and also use Deep Q-learning to build an agent that plays Space Invaders game. By the end of this book, you will have developed the skills to choose and customize multiple neural network architectures for various deep learning problems you might encounter.
Table of Contents (18 chapters)

Encoding an image

Image encoding can be performed in multiple ways. In the following sections, we will contrast the performance of vanilla autoencoders, multilayer autoencoders, and convolutional autoencoders. The term auto-encoding refers to encoding in such a way that the original input is recreated with a far fewer number of dimensions in an image.

An autoencoder takes an image as input and encodes the input image into a lower dimension in such a way that we can reconstruct the original image by using only the encoded version of the input image. Essentially, you can think of the encoded version of similar images as having similar encoded values.

Getting ready

Before we define our strategy, let's get a feel for how...