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

Understanding the limitations of autoencoders

As we saw previously, neural networks such as autoencoders are used to automatically learn representative features from data, without explicitly relying on human-engineered assumptions. While this approach may allow us to discover ideal encoding schemes that are specific to different types of data, this approach does present certain limitations. Firstly, autoencoders are said to be data-specific, in the sense that their utility is restricted to data that is considerably similar to its training data. For example, an autoencoder that's trained to only regenerate cat pictures will have a very hard time generating dog pictures without explicitly being trained to do so. Naturally, this seems to reduce the scalability of such algorithms. It is also noteworthy that autoencoders, as of yet, do not perform noticeably better than the JPEG...