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stat.ME2026
Multiple Change Point Detection in the Mean and Covariance of High-Dimensional Matrix Time Series
Zetai Cen, Haeran Cho
This paper studies simultaneous change point detection in the first- and second-order structures of high-dimensional matrix-valued time series. Specifically, we extend the framewor…
math.ST2026
Detection and Mode-Identification of Multiple Change Points in Tensor Factor Models
Yuqi Zhang, Zetai Cen, Haeran Cho
We study the problem of modeling high-dimensional tensor-valued time series under a Tucker decomposition-based factor model while permitting the presence of multiple structural cha…