This article provides a concise overview of a ten‑chapter reinforcement‑learning textbook, outlining the progression from basic concepts such as states and rewards to advanced algorithms like policy gradients and actor‑critic methods, and explains how each chapter builds on the previous ones.
This article provides a comprehensive introduction to reinforcement learning for large language models, covering the Markov Decision Process formulation, the four core elements of RL, state‑value and action‑value functions, Bellman equations, and the advantage function that underpins modern policy‑gradient algorithms.
Explore how the Bellman equation underpins reinforcement learning, comparing Dynamic Programming, Monte Carlo, and Temporal‑Difference methods, and discover why TD’s low‑variance, online updates make it a powerful bridge between model‑based planning and sample‑based learning.
This article explains how to solve Bellman equations, use iterative policy‑evaluation methods, apply the policy‑improvement theorem, and combine both steps in policy iteration, value iteration, and asynchronous variants, illustrated with a 5‑state example and a 4×4 gridworld.
This article introduces the fundamental concepts of reinforcement learning, covering the agent‑environment interaction, key terminology, reward structures, task types, policies, value functions, the Bellman equations, and how optimal strategies are derived and approximated in practice.
