Book Image

Hands-On Neural Networks

By : Leonardo De Marchi, Laura Mitchell
Book Image

Hands-On Neural Networks

By: Leonardo De Marchi, Laura Mitchell

Overview of this book

Neural networks play a very important role in deep learning and artificial intelligence (AI), with applications in a wide variety of domains, right from medical diagnosis, to financial forecasting, and even machine diagnostics. Hands-On Neural Networks is designed to guide you through learning about neural networks in a practical way. The book will get you started by giving you a brief introduction to perceptron networks. You will then gain insights into machine learning and also understand what the future of AI could look like. Next, you will study how embeddings can be used to process textual data and the role of long short-term memory networks (LSTMs) in helping you solve common natural language processing (NLP) problems. The later chapters will demonstrate how you can implement advanced concepts including transfer learning, generative adversarial networks (GANs), autoencoders, and reinforcement learning. Finally, you can look forward to further content on the latest advancements in the field of neural networks. By the end of this book, you will have the skills you need to build, train, and optimize your own neural network model that can be used to provide predictable solutions.

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Table of Contents (16 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Section 1: Getting Started
Section 1: Getting Started
2
Getting Started with Supervised Learning
Getting Started with Supervised Learning
History of AI
An overview of machine learning
Environment setup
Supervised learning in practice with Python
Feature engineering
Supervised learning algorithms
Summary
3
Neural Network Fundamentals
Neural Network Fundamentals
The perceptron
Keras
Feedforward neural networks
FFNN in Python from scratch
Summary
4
Section 2: Deep Learning Applications
Section 2: Deep Learning Applications
5
Convolutional Neural Networks for Image Processing
Convolutional Neural Networks for Image Processing
Understanding CNNs
Convolutional layers
CNNs in Keras
Keras for expression recognition
Optimizing the network
Summary
6
Exploiting Text Embedding
Exploiting Text Embedding
Machine learning for NLP
Understanding word embeddings
GloVe
Summary
7
Working with RNNs
Working with RNNs
Understanding RNNs
Long Short-Term Memory
LSTMs in Keras
Summary
8
Reusing Neural Networks with Transfer Learning
Reusing Neural Networks with Transfer Learning
Transfer learning theory
Implementing MTL
Feature extraction
Implementing TL in PyTorch
Summary
9
Section 3: Advanced Applications
Section 3: Advanced Applications
10
Working with Generative Algorithms
Working with Generative Algorithms
Discriminative versus generative algorithms
Understanding GANs
GAN variations and timelines
BigGAN
StyleGAN
Deepfakes
RadialGAN
Summary
Further reading
11
Implementing Autoencoders
Implementing Autoencoders
Overview of autoencoders
Autoencoder applications
Bottleneck and loss functions
Standard types of autoencoder
Variational Autoencoders
Training VAEs
Summary
Further reading
12
Deep Belief Networks
Deep Belief Networks
Overview of DBNs
DBN architecture
Training DBNs
Fine-tuning
Datasets and libraries
Summary
Further reading
13
Reinforcement Learning
Reinforcement Learning
Basic definitions
Introducing Q-learning
Playing with OpenAI Gym
The frozen lake problem
Summary
14
Whats Next?
Whats Next?
Summarizing the book
Future of machine learning
Artificial general intelligence
Conclusions
15
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StyleGAN

StyleGAN is a GAN design released by researchers at NVIDIA in December 2018. It is essentially an upgraded version of ProGAN. It combined ProGAN with neural style transfer. At the core of the StyleGAN architecture is a style-transfer technique. The model set a new record for face generation tasks and can also be used to generate realistic images of cars, bedrooms, houses, and so on.

As with ProGAN, StyleGAN generates images gradually by starting with a very low resolution and continuing to a high-resolution image. The GAN controls the visual features that are expressed in each level, from coarse features such as the pose and face shape, through to the finer features such as eye and hair color:

The source for this image can be found at: https://arxiv.org/abs/1812.04948

The generator in StyleGAN incorporates a mapping network. The goal of the mapping network is to encode...

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