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)

Deep Q-learning to balance a cart pole

In the previous sections, we learned about taking an action based on q-table values. However, arriving at an optimal value is time-consuming, as the agent would have to play multiple times to arrive at the optimal q-table.

In this section, we will learn about using a neural network so that we can arrive at the optimal values faster than what we achieved when we used Q-learning.

Getting ready

For this exercise, we will register the cart-pole environment where the possible actions are to move either right or left so that we balance the pole. Additionally the cart position, cart velocity, pole angle, and pole velocity at the tip is the information we have about the states.

The rules of this...