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Fast and accurate optimization of a GPU-accelerated CA urban model through cooperative coevolutionary particle swarms

Blecic, Ivan and Cecchini, Arnaldo and Trunfio, Giuseppe Andrea (2014) Fast and accurate optimization of a GPU-accelerated CA urban model through cooperative coevolutionary particle swarms. Procedia computer science, Vol. 29 , p. 1631-1643. eISSN 1877-0509. Article.

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DOI: 10.1016/j.procs.2014.05.148

Abstract

The calibration of Cellular Automata (CA) models for simulating land-use dynamics requires the use of formal, well-structured and automated optimization procedures. A typical approach used in the literature to tackle the calibration problem, consists of using general optimization metaheuristics. However, the latter often require thousands of runs of the model to provide reliable results, thus involving remarkable computational costs. Moreover, all optimization metaheuristics are plagued by the so called curse of dimensionality, that is a rapid deterioration of efficiency as the dimensionality of the search space increases. Therefore, in case of models depending on a large number of parameters, the calibration problem requires the use of advanced computational techniques. In this paper, we investigate the effectiveness of com- bining two computational strategies. On the one hand, we greatly speed up CA simulations by using general-purpose computing on graphics processing units. On the other hand, we use a specifically designed cooperative coevolutionary Particle Swarm Optimization algorithm, which is known for its ability to operate effectively in search spaces with a high number of dimensions.

Item Type:Article
ID Code:10580
Status:Published
Refereed:Yes
Uncontrolled Keywords:Cooperative coevolution, particle swarm, GPGPU, urban models, cellular automata
Subjects:Area 08 - Ingegneria civile e Architettura > ICAR/22 Estimo
Area 09 - Ingegneria industriale e dell'informazione > ING-INF/05 Sistemi di elaborazione delle informazioni
Area 08 - Ingegneria civile e Architettura > ICAR/20 Architettura e pianificazione urbanistica
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Architettura, Design e Urbanistica
Publisher:Elsevier
eISSN:1877-0509
Deposited On:09 Jan 2015 13:21

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