Post Hoc Inference for Component Attribution in Multivariate Change-Point Detection
Dhia-Elhaq Ouerfelli, Sylvain Arlot, Kevin Bleakley, Patrick Pamphile
stat.ME, math.ST, stat.ML
Submitted: 2026-07-16
Comments: 44 pages, 18 figures
Code: https://github.com/Dhia-Elhaq/Post-hoc-change-point-detection
License: http://creativecommons.org/licenses/by/4.0/
The gist: We consider the post-detection analysis of change-points for multivariate time series, with the goal of identifying which coordinates are responsible for a detected change.
Terminology
Abstract
We consider the post-detection analysis of change-points for multivariate time series, with the goal of identifying which coordinates are responsible for a detected change. After a change-point has been located by an offline detection algorithm, we propose post hoc statistical procedures to determine whether the change occurs in either of two predefined blocks of coordinates or in both. Our methods rely on two-sample testing procedures with a particular focus on nonparametric tests; we provide theoretical guarantees for Type I error control. Simulations and a real-data experiment demonstrate the strong performance of the proposed procedures.
Sources
- Theoretical guarantees for change localization using conformal p-values
- Post-selection inference for quantifying uncertainty in changes in variance
- Online Centralized Non-parametric Change-point Detection via Graph-based Likelihood-ratio Estimation
- Large sample analysis of the median heuristic
- Variable Selection for Comparing High-dimensional Time-Series Data
- Variable Selection in Maximum Mean Discrepancy for Interpretable Distribution Comparison
- Valid and Exact Statistical Inference for Multi-dimensional Multiple Change-Points by Selective Inference
- Selective Inference for Change Point Detection in Multi-dimensional Sequences
- Variable Selection for Kernel Two-Sample Tests
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