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Improved global-best particle swarm optimization algorithm with mixed-attribute data classification capability
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DOI：10.1016/j.asoc.2014.04.018.png)
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Abstract
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This paper describes a novel Particle Swarm Optimization (PSO)-based classification algorithm with improved capabilities in comparison to several alternatives. The algorithm uses a new particle-position update mechanism and a new way to handle mixed-attribute data based on particle position interpretation. The new position update mechanism combines particle confinement and dispersion for improved search space coverage, and the proposed interpretation mechanism uses the frequencies of non numerical attributes instead of integer mappings. As our experimental results have shown, this leads to better cost function evaluation in the description space and subsequently enhanced processing of mixed-attribute data by the PSO algorithm. Our experimental setup consisted of three large benchmark databases, and the obtained recognition accuracies were better than those obtained with well-known classifiers. (C) 2014 Elsevier B.V. All rights reserved.
Keywords:
Mixed attribute data sets
Particle swarm optimization
Supervised learning
Classification
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