Book Image

Hands-On Machine Learning with TensorFlow.js

By : Kai Sasaki
Book Image

Hands-On Machine Learning with TensorFlow.js

By: Kai Sasaki

Overview of this book

TensorFlow.js is a framework that enables you to create performant machine learning (ML) applications that run smoothly in a web browser. With this book, you will learn how to use TensorFlow.js to implement various ML models through an example-based approach. Starting with the basics, you'll understand how ML models can be built on the web. Moving on, you will get to grips with the TensorFlow.js ecosystem to develop applications more efficiently. The book will then guide you through implementing ML techniques and algorithms such as regression, clustering, fast Fourier transform (FFT), and dimensionality reduction. You will later cover the Bellman equation to solve Markov decision process (MDP) problems and understand how it is related to reinforcement learning. Finally, you will explore techniques for deploying ML-based web applications and training models with TensorFlow Core. Throughout this ML book, you'll discover useful tips and tricks that will build on your knowledge. By the end of this book, you will be equipped with the skills you need to create your own web-based ML applications and fine-tune models to achieve high performance.
Table of Contents (17 chapters)
Free Chapter
1
Section 1: The Rationale of Machine Learning and the Usage of TensorFlow.js
5
Section 2: Real-World Applications of TensorFlow.js
12
Section 3: Productionizing Machine Learning Applications with TensorFlow.js

Summary

In this chapter, we have discussed the basic assumption of reinforcement learning and how Q-learning works by showing the simple MDP problem. Reinforcement learning is a powerful technique for solving a situation where we do not have complete knowledge of the environment itself. This leads to the desired result with a few sets of definitions naturally modeled from the environment observation. While we still carefully design the transition function between states, the deterministic transition also provides a good assumption of MDP as shown in our experiment.

Q-learning is a widely used algorithm to resolve the reinforcement learning problem. It is an iterative process to update the action-value function according to the Bellman equation. It is guaranteed to be converged, and gives us a result consistent with our expectations. While the algorithm itself looks pretty simple...