Data clustering using particle swarm optimization

This paper proposes two new approaches to using PSO to cluster data, one which basically usesPSO to refine the clusters formed by K-means, and the other which uses PSO in a different way to seed the initial swarm.

Abstract

This paper proposes two new approaches to using PSO to cluster data. It is shown how PSO can be used to find the centroids of a user specified number of clusters. The algorithm is then extended to use K-means clustering to seed the initial swarm. This second algorithm basically uses PSO to refine the clusters formed by K-means. The new PSO algorithms are evaluated on six data sets, and compared to the performance of K-means clustering. Results show that both PSO clustering techniques have much potential.