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Clustering Using Shared Reference Points Algorithm Based On a Sound Data Model
Mohamed A. Abbas, Amin A. Shoukry
Pages - 28 - 47     |    Revised - 15-03-2012     |    Published - 16-04-2012
Volume - 3   Issue - 2    |    Publication Date - April 2012  Table of Contents
Shared Nearest Neighbors, Mutual Neighbors, Spatial Data, High Dimensional Data, Time Series, Cluster Validation
A novel clustering algorithm CSHARP is presented for the purpose of finding clusters of arbitrary shapes and arbitrary densities in high dimensional feature spaces. It can be considered as a variation of the Shared Nearest Neighbor algorithm (SNN), in which each sample data point votes for the points in its k-nearest neighborhood. Sets of points sharing a common mutual nearest neighbor are considered as dense regions/ blocks. These blocks are the seeds from which clusters may grow up. Therefore, CSHARP is not a point-to-point clustering algorithm. Rather, it is a block-to-block clustering technique. Much of its advantages come from these facts: Noise points and outliers correspond to blocks of small sizes, and homogeneous blocks highly overlap. This technique is not prone to merge clusters of different densities or different homogeneity. The algorithm has been applied to a variety of low and high dimensional data sets with superior results over existing techniques such as DBScan, K-means, Chameleon, Mitosis and Spectral Clustering. The quality of its results as well as its time complexity, rank it at the front of these techniques.
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Mr. Mohamed A. Abbas
- Egypt
Professor Amin A. Shoukry
- Egypt