Abstract
This paper investigates a Particle Swarm with dynamic topology and a conservation of evaluations strategy. The population is structured on a 2-dimensional grid of nodes, through which the particles interact and move according to simple rules. As a result of this structure, each particle’s neighbourhood degree is time-varying. If at given time step a particle p has no neighbours except itself, p is not evaluated until it establishes at least one link to another particle. A set of experiments demonstrates that the dynamics imposed by the structure provides a consistent and stable behaviour throughout the test set when compared to standard topologies, while the conservation of evaluations significantly reduces the convergence speed of the algorithm. The working mechanisms of the proposed structure are very simple and, except for the size of the grid, they do not require parameters and tuning.
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Acknowledgments
The first author wishes to thank FCT, Ministério da Ciência e Tecnologia, his Research Fellowship SFRH/BPD/66876/2009. The work was supported by FCT PROJECT [PEst-OE/EEI/LA0009/2013], Spanish Ministry of Science and Innovation projects TIN2011-28627-C04-02 and TIN2011-28627-C04-01, Andalusian Regional Government P08-TIC-03903 and P10-TIC-6083, CEI-BioTIC UGR project CEI2013-P-14, and UL-EvoPerf project.
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Fernandes, C.M., Laredo, J.L.J., Merelo, J.J., Cotta, C., Rosa, A.C. (2016). Particle Swarm Optimization with Dynamic Topology and Conservation of Evaluations. In: Merelo, J.J., Rosa, A., Cadenas, J.M., Dourado, A., Madani, K., Filipe, J. (eds) Computational Intelligence. IJCCI 2014. Studies in Computational Intelligence, vol 620. Springer, Cham. https://doi.org/10.1007/978-3-319-26393-9_7
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DOI: https://doi.org/10.1007/978-3-319-26393-9_7
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