arXiv Machine Learning By Malte Algren, Tobias Golling, Francesco Armando Di Bello, Christopher Pollard

Mind the Gap: Navigating Inference with Optimal Transport Maps

Read the original on arXiv Machine Learning →

The paper introduces a model calibration method using optimal transport to address discrepancies between simulation and experimental data in high-dimensional machine learning applications. Applied to jet tagging in particle physics, the technique calibrates a 128‑dimensional latent representation from a general‑purpose classifier, ensuring downstream derived quantities are properly calibrated. This enables more reliable use of foundation models for jet flavor analysis in LHC experiments and offers a general framework for correcting high‑dimensional simulations across scientific fields.

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