2 papers
cs.LG2026
High-Dimensional Nonparametric Change-Point Detection via Low-Rank Degree-Three Density Projection
Guoqing Zhang, Zhaixin Chen
Distributional changes can be invisible to means and covariances yet appear in skewness, asymmetric interactions, or other third-order structure. We develop a nonparametric change-…
cs.LG2026
High-dimensional nonparametric changepoint detection via low-rank degree-two density projection
Guoqing Zhang, Zhaixin Chen
Detecting distributional changes in high dimension is difficult when neither the pre-change nor post-change density is parametrically specified. We introduce a representation-based…