# Class Imbalance Techniques for High Energy Physics

### Submission summary

 As Contributors: Christopher W. Murphy Preprint link: scipost_201907_00004v1 Date submitted: 2019-07-27 Submitted by: Murphy, Christopher W. Submitted to: SciPost Physics Domain(s): Theor. & Comp. Subject area: High-Energy Physics - Phenomenology

### Abstract

A common problem in a high energy physics experiment is extracting a signal from a much larger background. Posed as a classification task, there is said to be an imbalance in the number of samples belonging to the signal class versus the number of samples from the background class. In this work we provide a brief overview of class imbalance techniques in a high energy physics setting. Two case studies are presented: (1) the measurement of the longitudinal polarization fraction in same-sign $WW$ scattering, and (2) the decay of the Higgs boson to charm-quark pairs.

###### Current status:
Editor-in-charge assigned

### Submission & Refereeing History

Submission scipost_201907_00004v1 on 27 July 2019