Fuzzy Prediction Sets: Conformal Prediction with E-values

Fuente: arXiv
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Autores principales: Koning, Nick W., van Meer, Sam
Formato: Preprint
Publicado: 2025
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author Koning, Nick W.
van Meer, Sam
author_facet Koning, Nick W.
van Meer, Sam
contents Prediction sets offer a binary inclusion/exclusion for each element at the same fixed confidence level. We generalize to fuzzy prediction sets, which exclude elements at their own data-driven confidence level. Our key insight is that a fuzzy prediction set \emph{is} an e-value, capturing precisely what e-values bring to predictive inference. Fuzzy prediction sets inherit the merging properties of their e-value, offer richer guarantees to decision-makers. We also show in what sense optimal e-values give rise to optimal (fuzzy) prediction sets. We apply our results to conformal prediction, deriving optimal fuzzy conformal prediction sets, and characterizing in what sense classical conformal prediction is optimal.
format Preprint
id arxiv_https___arxiv_org_abs_2509_13130
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Fuzzy Prediction Sets: Conformal Prediction with E-values
Koning, Nick W.
van Meer, Sam
Statistics Theory
Methodology
Machine Learning
Prediction sets offer a binary inclusion/exclusion for each element at the same fixed confidence level. We generalize to fuzzy prediction sets, which exclude elements at their own data-driven confidence level. Our key insight is that a fuzzy prediction set \emph{is} an e-value, capturing precisely what e-values bring to predictive inference. Fuzzy prediction sets inherit the merging properties of their e-value, offer richer guarantees to decision-makers. We also show in what sense optimal e-values give rise to optimal (fuzzy) prediction sets. We apply our results to conformal prediction, deriving optimal fuzzy conformal prediction sets, and characterizing in what sense classical conformal prediction is optimal.
title Fuzzy Prediction Sets: Conformal Prediction with E-values
topic Statistics Theory
Methodology
Machine Learning
url https://arxiv.org/abs/2509.13130