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Clustering analysis includes a number of different algorithms and methods for grouping objects by their similar characteristics into categ ories. In recent years, considerable effort has been made to improve such algorithms performance. In this sense, this paper explores three different bio-inspired metaheuristics in the cluste ring problem: Genetic Algorithms (GAs), Ant Colony Optimization (ACO), and Artificial Immune Systems (AIS). This paper proposes some refinements to be applied to these metaheurist ics in order to improve their performance in the data clustering problem. The performance of the proposed algorithms is compared on five different numeric UCI databases. The results s how that GA, ACO and AIS based algorithms are able to efficiently and automaticall y forming natural groups from a pre-defined number of clusters.

Application of Bio-inspired Metaheuristics in the Data Clustering Problem