20–31 Oct 2025
University of Tokyo
Asia/Tokyo timezone

Machine Learning Assisted Reweighting and Unfolding for Neutrino Analyses

31 Oct 2025, 13:00
25m
Koshiba Hall (University of Tokyo)

Koshiba Hall

University of Tokyo

7-3 Hongo, Bunkyo City, Tokyo 113-0033
Long talk (25min. + 10min. Q/A) Neural Inference Techniques

Speaker

Roger Huang

Description

It is well-known that classifiers can be trained to approximate the likelihood ratio between two distributions, and that machine learning based classifiers in particular can learn this likelihood ratio in high-dimensional spaces. This provides a method to reweight events from different distributions as functions of many features. OmniFold is an unfolding technique that uses this concept to perform unbinned, high-dimensional unfolding. This talk will present the application of OmniFold to a neutrino cross-section study using T2K public data and discuss potential future applications to other neutrino experiments.

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