Evolving a disjunctive predator prey swarm using PSO : adapting swarms with swarms.




Riyaz, Firasath

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Swarm Intelligence is the study of "the emergent collective intelligence of groups of simple agents." Recent research has explored the important applications in the field of business, telecommunications, robotics and optimization. This thesis models a simple prey swarm disjunctively, i.e. a number of disjoint survival attributes are aggregated into a single response. The swarm was initialized using heuristics. We studied the ability of this swarm to evolve its performance using a particle swarm optimization on the disjunctive rules. The rules are characterized through use of a fuzzy inference engine and the rules adapted through changing of the rule membership functions. The result was both improved performance and unexpected emergent behavior for example individual members of the prey swarm began to sacrifice their life to lengthen the life of the swarm aggregate. The disjunctive swarm is found to be robust against rule failures.



Swarm Intelligence., Fuzzy logic., Behavior evolution.