Machine Learning Algorithms & Natural Language Processing

Mar 1, 2026 · Artificial Intelligence

From Traditional RL to LLM RL: Theory Derivation and Practical Engineering Improvements

This article walks through the fundamental derivation of policy‑based reinforcement learning, explains how traditional RL concepts extend to large‑language‑model RL, and details engineering enhancements such as GRPO memory reduction, asynchronous rollout, importance‑sampling corrections, and token‑flow management for stable industrial‑scale training.