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

Autoencoders

In the preceding chapter, we familiarized ourselves with a novel area in machine learning (ML): the realm of reinforcement learning. We saw how reinforcement learning algorithms can be augmented using neural networks, and how we can learn approximate functions that can map game states to possible actions the agent may take. These actions are then compared to a moving target variable, which in turn was defined by what we called the Bellman equation. This, strictly speaking, is a self-supervised ML technique, as it is the Bellman equation that's used to compare our predictions, and not a set of labeled target variables, as would be the case for a supervised learning approach (for example, game screens labeled with optimal actions to take at each state). The latter, while possible, proves to be much more computationally intensive for the given use case. Now we will...