An improved quantum-behaved particle swarm optimization with perturbation operator and its application in estimating groundwater contaminant source
Tian, Na, Sun, Jun, Xu, Wenbo and Lai, Choi-Hong (2011) An improved quantum-behaved particle swarm optimization with perturbation operator and its application in estimating groundwater contaminant source. Inverse Problems in Science and Engineering, 19 (2). pp. 181-202. ISSN 1741-5977 (Print), 1741-5985 (Online) (doi:10.1080/17415977.2010.531470)Full text not available from this repository.
In this study, a heuristic method known as quantum-behaved particle swarm optimization (QPSO) is used to solve the inverse advection–dispersion problem of estimating the strength of a time-varying groundwater contaminant source from the knowledge of forensic observations. No prior information of the functional form is given in this study. The implicit upwind finite difference method is used in the governing advection–dispersion equation. The least squares method is used to model the inverse problem, which transforms to an optimization problem. Considering the ill-posedness of the inverse problem, the Tikhonov regularization method is used to stablize the inverse solution. To ensure the global convergence properties of the QPSO, an improved version with the perturbation operator is proposed and its performance is tested by several well-known benchmark functions. Finally, the proposed method is applied to reconstruct the contaminant source history and comparisons with other methods are also presented in this article. The numerical experiments demonstrate the efficiency and validity of our proposed method.
|Additional Information:|| Published online: 14 Mar 2011.|
|Uncontrolled Keywords:||quantum-behaved particle swarm optimization, groundwater contaminant source identification, inverse problem, advection–dispersion, Tikhonov regularization, perturbation operator|
|Subjects:||Q Science > QA Mathematics|
R Medicine > RZ Other systems of medicine
|School / Department / Research Groups:||School of Computing & Mathematical Sciences|
School of Computing & Mathematical Sciences > Department of Mathematical Sciences
|Last Modified:||15 Jul 2013 16:50|
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