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Research
While machine learning systems can be incredibly powerful, it is of crucial interest to understand how confident we can be in their outputs.
My work focuses on providing statistical guarantees for these predictions.
In particular, I do research on classifier calibration, proper scoring rules, and conformal prediction.
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Software
I am developping the probmetrics Python package with David Holzmüller.
The package provides classification metrics, especially metrics for assessing the quality of probabilistic predictions, and efficient implementations for various post-hoc calibration methods.
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Publications
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Structured Matrix Scaling for Multi-Class Calibration
Eugène Berta,
David Holzmüller,
Michael I. Jordan,
Francis Bach
arXiv preprint, 2025
arxiv /
code
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Multivariate Conformal Prediction via Conformalized Gaussian Scoring
Sacha Braun,
Eugène Berta,
Michael I. Jordan,
Francis Bach
arXiv preprint, 2025
arxiv /
code
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Rethinking Early Stopping: Refine, Then Calibrate
Eugène Berta,
David Holzmüller,
Michael I. Jordan,
Francis Bach
arXiv preprint, 2025
arxiv /
code /
slides
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Classifier Calibration with ROC-Regularized Isotonic Regression
Eugène Berta,
Francis Bach,
Michael I. Jordan
Proceedings of the International Conference on Artificial Intelligence and Statistics (AISTATS), 2024
paper /
code
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Teaching
I am a teaching assistant for the second year course "Mathématiques fondamentales" in the "Cycle Pluridisciplinaire d’Études Supérieures" (CPES) of Lycée Henri IV and PSL university.
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