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arXiv 1903.09644hep-phcs.LGhep-exstat.ML
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通过强化学习进行喷气机梳理

Jet grooming through reinforcement learning

Università degli Studi di Milano(米兰大学);INFN Milan(意大利国家核物理研究所米兰分部);University of Oxford(牛津大学)

Stefano Carrazza, Frédéric A. Dreyer

摘要:

我们介绍了一种新的实施强化学习(RL)算法,旨在找到一个最佳的射流疏导策略,对撞机实验的关键工具。RL代理使用构造的奖励函数进行训练,以优化所产生的射流特性,同时使用信号和背景样本进行多级训练。我们表明,源自深度RL代理的梳理算法可以与大型强子对撞机使用的最先进技术相匹配,从而提高了增强对象的质量分辨率。给定一个合适的奖励函数,代理学习如何训练的政策,最佳地消除软广角辐射,允许一个模块化的梳理技术,可以应用在广泛的背景。这些结果可以通过相应的GroomRL框架访问。

英文摘要:

We introduce a novel implementation of a reinforcement learning (RL) algorithm which is designed to find an optimal jet grooming strategy, a critical tool for collider experiments. The RL agent is trained with a reward function constructed to optimize the resulting jet properties, using both signal and background samples in a simultaneous multi-level training. We show that the grooming algorithm derived from the deep RL agent can match state-of-the-art techniques used at the Large Hadron Collider, resulting in improved mass resolution for boosted objects. Given a suitable reward function, the agent learns how to train a policy which optimally removes soft wide-angle radiation, allowing for a modular grooming technique that can be applied in a wide range of contexts. These results are accessible through the corresponding GroomRL framework.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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