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Events Calendar

JUNIPR: a Framework for Unsupervised Machine Learning in Particle Physics

Date and Time: Tuesday, February 12, 2019, 03:00pm - 04:00pm
Location: Room 385, Physics & Astronomy Building

Speaker: Anders Johan Andreassen (UC Berkeley)

In applications of machine learning to particle physics, a persistent challenge is how to go beyond discrimination to learn about the underlying physics. In this talk, we will present a new framework: JUNIPR, Jets from UNsupervised Interpretable PRobabilistic models, which uses unsupervised learning to learn the intricate high-dimensional contours of the data upon which it is trained, without reference to pre-established labels.

In order to approach such a complex task, JUNIPR is structured intelligently around a leading-order model of the physics underlying the data. In addition to making unsupervised learning tractable, this design actually alleviates existing tensions between performance and interpretability. Applications to discrimination, data-driven Monte Carlo generation and reweighting of events will be discussed.

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