CORTEXA
← Browse

Yiu-ming Cheung

2 papers indexed

arxivcs.LGcs.AI2026-07-08

Imputation Meets Clustering: Exploiting Latent Subgroup Structure for Missing Data Recovery

Chuyao Zhang, E Li, Taochen Chen, Yiqun Zhang, Yuzhu Ji, Shuping Zhao, et al.

Missing data is prevalent in practical applications, making effective imputation an essential preprocessing step for downstream analysis. Real-world datasets often exhibit complex latent structures composed of multiple subgroups with distinct distributions. However, existing meth…

View free PDFSource page
arxivcs.LGcs.AI2026-07-06Cited by 46

Learnable Weighting of Intra-Attribute Distances for Categorical Data Clustering with Nominal and Ordinal Attributes

Yiqun Zhang, Yiu-ming Cheung

The success of categorical data clustering generally much relies on the distance metric that measures the dissimilarity degree between two objects. However, most of the existing clustering methods treat the two categorical subtypes, i.e. nominal and ordinal attributes, in the sam…

View free PDFSource page