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math.ST2026
Optimal distribution-free sequential change detection with conformal martingales
Swapnaneel Bhattacharyya, Aaditya Ramdas
We study the challenging problem of distribution-free sequential changepoint detection for independent observations with unknown and \emph{completely unrestricted} pre- and post-ch…
math.ST2025
Theoretical guarantees for change localization using conformal p-values
Swapnaneel Bhattacharyya, Aaditya Ramdas
Changepoint localization aims to provide confidence sets for a changepoint (if one exists). Existing methods either relying on strong parametric assumptions or providing only asymp…