Improving Categorical Data Clustering Algorithm by Weighting Uncommon Attribute Value Matches Zengyou He; Xiaofei Xu; Shenchun Deng — 2006 Computer Science and Information Systems
HFP-Outlier: Frequent Pattern Based Outlier Detection Zengyou He; Xiaofei Xu; Joshua Zhexue Huang; Shengchun Deng — 2005 Computer Science and Information Systems