Deep Set Auto Encoders for Anomaly Detection in Particle Physics

Journal Article · Mon Jan 31 04:00:00 EST 2022 · SciPost Physics

DOI:https://doi.org/10.21468/SciPostPhys.12.1.045· OSTI ID:1842863

Ostdiek, Bryan ^[1]

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1. Harvard University, The NSF AI Institute for Artificial Intelligence and Fundamental Interactions

There is an increased interest in model agnostic search strategies for physics beyond the standard model at the Large Hadron Collider. We introduce a Deep Set Variational Autoencoder and present results on the Dark Machines Anomaly Score Challenge. We find that the method attains the best anomaly detection ability when there is no decoding step for the network, and the anomaly score is based solely on the representation within the encoded latent space. This method was one of the top-performing models in the Dark Machines Challenge, both for the open data sets as well as the blinded data sets.

• Sponsoring Organization: USDOE
• Grant/Contract Number: SC0013607; SC0020223
• OSTI ID: 1842863
• Alternate ID(s): OSTI ID: 1981044
• Journal Information: SciPost Physics, Journal Name: SciPost Physics Journal Issue: 1 Vol. 12; ISSN 2542-4653
• Publisher: Stichting SciPost
• Country of Publication: Netherlands
• Language: English