Anomaly Awareness

We present a new algorithm for anomaly detection called Anomaly Awareness. The algorithm learns about normal events while being made aware of the anomalies through a modification of the cost function. We show how this method works in different Particle Physics situations and in standard Computer Vis...

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Bibliographic Details
Main Author: Charanjit K. Khosa, Veronica Sanz
Format: Article
Language:English
Published: SciPost 2023-08-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.15.2.053
Description
Summary:We present a new algorithm for anomaly detection called Anomaly Awareness. The algorithm learns about normal events while being made aware of the anomalies through a modification of the cost function. We show how this method works in different Particle Physics situations and in standard Computer Vision tasks. For example, we apply the method to images from a Fat Jet topology generated by Standard Model Top and QCD events, and test it against an array of new physics scenarios, including Higgs production with EFT effects and resonances decaying into two, three or four subjets. We find that the algorithm is effective identifying anomalies not seen before, and becomes robust as we make it aware of a varied-enough set of anomalies.
ISSN:2542-4653