Among the variants of the basic Particle Swarm Optimization (PSO) algorithm as first proposed in 1995, EPSO (Evolutionary PSO), proposed by Miranda and Fonseca, seems to produce significant improvements. We analyze the effects of two modifications introduced in that work (adaptive parameter setting and selection based on an evolution strategies-like approach) separately, reporting results obtained on a set of multimodal benchmark functions, which show that they may have opposite and complementary effects. In particular, using only parameter adaptation when optimizing ’harder’ functions yields better results than when both modifications are applied. We also propose a justification for this, based on recent analyses in which particle swarm optimizers are studied as dynamical systems.

A critical assessment of some variants of Particle Swarm Optimization / Cagnoni, Stefano; Vanneschi, L; Azzini, A; Tettamanzi, A.. - STAMPA. - 4974:(2008), pp. 565-574. (Intervento presentato al convegno EvoWorkshops 2008 tenutosi a Napoli nel 26-28 marzo 2008) [10.1007/978-3-540-78761-7_62].

A critical assessment of some variants of Particle Swarm Optimization

CAGNONI, Stefano;
2008-01-01

Abstract

Among the variants of the basic Particle Swarm Optimization (PSO) algorithm as first proposed in 1995, EPSO (Evolutionary PSO), proposed by Miranda and Fonseca, seems to produce significant improvements. We analyze the effects of two modifications introduced in that work (adaptive parameter setting and selection based on an evolution strategies-like approach) separately, reporting results obtained on a set of multimodal benchmark functions, which show that they may have opposite and complementary effects. In particular, using only parameter adaptation when optimizing ’harder’ functions yields better results than when both modifications are applied. We also propose a justification for this, based on recent analyses in which particle swarm optimizers are studied as dynamical systems.
2008
9783540787600
A critical assessment of some variants of Particle Swarm Optimization / Cagnoni, Stefano; Vanneschi, L; Azzini, A; Tettamanzi, A.. - STAMPA. - 4974:(2008), pp. 565-574. (Intervento presentato al convegno EvoWorkshops 2008 tenutosi a Napoli nel 26-28 marzo 2008) [10.1007/978-3-540-78761-7_62].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/1805018
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