Active Inference, The Learn Arc — Part 8: Chapter 7 — POMDPs, Sophisticated Planning, and Dirichlet Learning

Series: The Learn Arc — 50 posts teaching Active Inference through a live BEAM-native workbench. ← Part 7: A Recipe for Designing . This is Part 8. The hero line POMDPs in full colour — message passing, Dirichlet learning, hierarchy. Chapter 7 is the longest chapter in the book, and for good reason. It takes the machinery of Chapters 1–6 and turns the volume on every knob. Planning gets deeper (sophisticated tree search). Learning gets real (online Dirichlet updates to the A and B matrices). Com