activity
20042007
most citedAn Optimization Model for Outlier Detection in Categorical Data

58 citations · 215 across the 13 of their papers we have counts for

collaborators

13 papers

cs.AI2007★ 6 cited

Attribute Value Weighting in K-Modes Clustering

Zengyou He, Xaiofei Xu, Shengchun Deng

In this paper, the traditional k-modes clustering algorithm is extended by weighting attribute value matches in dissimilarity computation. The use of attribute value weighting tech…

cs.AI2006

Approximation Algorithms for K-Modes Clustering

Zengyou He

In this paper, we study clustering with respect to the k-modes objective function, a natural formulation of clustering for categorical data. One of the main contributions of this p…

cs.AI2005★ 4 cited

K-ANMI: A Mutual Information Based Clustering Algorithm for Categorical Data

Zengyou He, Xiaofei Xu, Shengchun Deng

Clustering categorical data is an integral part of data mining and has attracted much attention recently. In this paper, we present k-ANMI, a new efficient algorithm for clustering…

cs.AI2005★ 31 cited

K-Histograms: An Efficient Clustering Algorithm for Categorical Dataset

Zengyou He, Xiaofei Xu, Shengchun Deng +1

Clustering categorical data is an integral part of data mining and has attracted much attention recently. In this paper, we present k-histogram, a new efficient algorithm for clust…

cs.AI2005★ 52 cited

Clustering Mixed Numeric and Categorical Data: A Cluster Ensemble Approach

Zengyou He, Xiaofei Xu, Shengchun Deng

Clustering is a widely used technique in data mining applications for discovering patterns in underlying data. Most traditional clustering algorithms are limited to handling datase…

cs.DB2005★ 15 cited

A Fast Greedy Algorithm for Outlier Mining

Zengyou He, Xiaofei Xu, Shengchun Deng

The task of outlier detection is to find small groups of data objects that are exceptional when compared with rest large amount of data. In [38], the problem of outlier detection i…