2 papers
stat.ML2026
ARC: Augmented-Rank Conformalization for Changepoint Localization --- Finite-Sample Validity and Distribution-Robust Efficiency
Chenchen Peng, Mixia Wu, Qijing Yan +2
Conformal changepoint localization turns any score into a confidence set for the changepoint with finite-sample coverage. Coverage is universal; efficiency is not. The oracle score…
stat.ME2026
ARM: Detector-Agnostic Changepoint Attribution with Finite-Sample Error Control
Chenchen Peng, Mixia Wu, Qijing Yan +2
Detecting a change in a multivariate series answers only the first of two questions; the operational question is which coordinates changed. Existing answers are incomplete. Block-l…