On Artificial Intelligence
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Meta Reinforcement Learning: An Introduction

Intro
: a good meta-learning model is expected to generalize to new tasks or new environments that have never been encountered during training. The adaptation process, essentially a mini learning session, happens at test with limited exposure to the new configurations. Even without any explicit fine-tuning (no gradient backpropagation on trainable variables), the meta-learning model autonomously adjusts internal hidden states to learn. Training RL algorithms can be notoriously difficult sometimes. If the meta-learning agent could become so smart that the distribution of solvable unseen tasks grows extremely broad, we are on track towards general purpose methods — essentially building a “brain” which would solve all kinds of RL problems without much human interference or manual feature engineering. Sounds amazing, right?


Blog: https://lilianweng.github.io/lil-log/2019/06/23/meta-reinforcement-learning.html
#reinforcement_learning #meta_learning #research_paper