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A hypergraph based clustering algorithm for spatial data sets

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2 Author(s)
Jong-Sheng Cherng ; Dept. of Electr. Eng., Da Yeh Univ., Changhwa, Taiwan ; Mei-Jung Lo

Clustering is a discovery process in data mining and can be used to group together the objects of a database into meaningful subclasses which serve as the foundation for other data analysis techniques. The authors focus on dealing with a set of spatial data. For the spatial data, the clustering problem becomes that of finding the densely populated regions of the space and thus grouping these regions into clusters such that the intracluster similarity is maximized and the intercluster similarity is minimized. We develop a novel hierarchical clustering algorithm that uses a hypergraph to represent a set of spatial data. This hypergraph is initially constructed from the Delaunay triangulation graph of the data set and can correctly capture the relationships among sets of data points. Two phases are developed for the proposed clustering algorithm to find the clusters in the data set. We evaluate our hierarchical clustering algorithm with some spatial data sets which contain clusters of different sizes, shapes, densities, and noise. Experimental results on these data sets are very encouraging

Published in:

Data Mining, 2001. ICDM 2001, Proceedings IEEE International Conference on

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