Hierarchical clustering in particle physics through reinforcement learning

Code

• github.com/johannbrehmer/ginkgo-rl
  OfficialIn paperpytorch★ 13

Abstract

Particle physics experiments often require the reconstruction of decay patterns through a hierarchical clustering of the observed final-state particles. We show that this task can be phrased as a Markov Decision Process and adapt reinforcement learning algorithms to solve it. In particular, we show that Monte-Carlo Tree Search guided by a neural policy can construct high-quality hierarchical clusterings and outperform established greedy and beam search baselines.

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