Higgs Boson Discovery with Boosted Trees


Tianqi Chen, Tong He ;
Proceedings of the NIPS 2014 Workshop on High-energy Physics and Machine Learning, PMLR 42:69-80, 2015.


The discovery of the Higgs boson is remarkable for its importance in modern Physics research. The next step for physicists is to discover more about the Higgs boson from the data of the Large Hadron Collider (LHC). A fundamental and challenging task is to extract the signal of Higgs boson from background noises. The machine learning technique is one important component in solving this problem. In this paper, we propose to solve the Higgs boson classification problem with a gradient boosting approach. Our model learns ensemble of boosted trees that makes careful tradeoff between classification error and model complexity. Physical meaningful features are further extracted to improve the classification accuracy. Our final solution obtained an \emphAMS of 3.71885 on the private leaderboard, making us the top 2% in the Higgs boson challenge.

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