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)

Machine translation

So far, we have seen a scenario where the input and output are mapped one-to-one. In this section, we will look into ways in which we can construct architectures that result in mapping all input data into a vector, and then decoding it into the output vector.

We will be translating an input text in English into text in French in this case study.

Getting ready

The architecture that we will be defining to perform machine translation is as follows:

  • Take a labeled dataset where the input sentence and the corresponding translation in French is available
  • Tokenize and extract words that are frequent in each of the English and French texts:
    • To identify the frequent words, we will count the frequency of each word...