Book Image

Hands-On Neural Networks with Keras

By : Niloy Purkait
Book Image

Hands-On Neural Networks with Keras

By: Niloy Purkait

Overview of this book

Neural networks are used to solve a wide range of problems in different areas of AI and deep learning. Hands-On Neural Networks with Keras will start with teaching you about the core concepts of neural networks. You will delve into combining different neural network models and work with real-world use cases, including computer vision, natural language understanding, synthetic data generation, and many more. Moving on, you will become well versed with convolutional neural networks (CNNs), recurrent neural networks (RNNs), long short-term memory (LSTM) networks, autoencoders, and generative adversarial networks (GANs) using real-world training datasets. We will examine how to use CNNs for image recognition, how to use reinforcement learning agents, and many more. We will dive into the specific architectures of various networks and then implement each of them in a hands-on manner using industry-grade frameworks. By the end of this book, you will be highly familiar with all prominent deep learning models and frameworks, and the options you have when applying deep learning to real-world scenarios and embedding artificial intelligence as the core fabric of your organization.
Table of Contents (16 chapters)
Free Chapter
1
Section 1: Fundamentals of Neural Networks
5
Section 2: Advanced Neural Network Architectures
10
Section 3: Hybrid Model Architecture
13
Section 4: Road Ahead

Breaking down the autoencoder

Well, on a high level, an autoencoder can be thought of as a specific type of feed-forward network that learns to mimic its input to reconstruct a similar output. As we mentioned previously, it is composed of two separate parts: an encoder function and a decoder function. We can think of the entire autoencoder as layers of interconnected neurons, which propagate data by first encoding its input and then reconstructing the output using the generated code:

Example of an undercomplete autoencoder

The previous diagram illustrates a specific type of autoencoder network. Conceptually, the input layer of an autoencoder connects to a layer of neurons to funnel the data into a latent space, known as the encoder function. This function can be generically defined as h = f(x), where x refers to the network inputs and h refers to the latent space that's...