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)

Traffic sign identification

In this case study, we will understand the way in which we can classify a signal into one of the 43 possible classes.

Getting ready

For this exercise, we will adopt the following strategy:

  1. Download the dataset that contains all possible traffic signs
  2. Perform histogram normalization on top of input images:
    • Certain images are taken in broad day light, while others might be taken in twilight
    • Different lighting conditions result in a variation in pixel values, depending on the lighting condition at which the picture is taken
    • Histogram normalization performs normalization on pixel values so that they all have a similar distribution
  3. Scale the input images
  4. Build, compile, and fit a model to reduce...