Book Image

Hands-On Intelligent Agents with OpenAI Gym

By : Palanisamy P
Book Image

Hands-On Intelligent Agents with OpenAI Gym

By: Palanisamy P

Overview of this book

Many real-world problems can be broken down into tasks that require a series of decisions to be made or actions to be taken. The ability to solve such tasks without a machine being programmed requires a machine to be artificially intelligent and capable of learning to adapt. This book is an easy-to-follow guide to implementing learning algorithms for machine software agents in order to solve discrete or continuous sequential decision making and control tasks. Hands-On Intelligent Agents with OpenAI Gym takes you through the process of building intelligent agent algorithms using deep reinforcement learning starting from the implementation of the building blocks for configuring, training, logging, visualizing, testing, and monitoring the agent. You will walk through the process of building intelligent agents from scratch to perform a variety of tasks. In the closing chapters, the book provides an overview of the latest learning environments and learning algorithms, along with pointers to more resources that will help you take your deep reinforcement learning skills to the next level.
Table of Contents (12 chapters)

Markov Decision Process

A Markov Decision Process (MDP) provides a formal framework for reinforcement learning. It is used to describe a fully observable environment where the outcomes are partly random and partly dependent on the actions taken by the agent or the decision maker. The following diagram is the progression of a Markov Process into a Markov Decision Process through the Markov Reward Process:

These stages can be described as follows:

  • A Markov Process (or a markov chain) is a sequence of random states s1, s2,... that obeys the Markov property. In simple terms, it is a random process without any memory about its history.
  • A Markov Reward Process (MRP) is a Markov Process (also called a Markov chain) with values.
  • A Markov Decision Process is a Markov Reward Process with decisions.