Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/1192
Title: Combining a fuzzy optimal model with a genetic algorithm to solve multi-objective rainfall–runoff model calibration
Authors: Cheng, Chuntian
Ou, Chunping
Chau, Kwok-wing
Subjects: Rainfall–runoff model
Calibration
Genetic algorithms
Fuzzy optimal model
Multiple objectives
Issue Date: Nov-2002
Source: Journal of hydrology, Nov. 2002, v. 268, no. 1-4, p. 72-86.
Abstract: An automatic calibration methodology for the Xinanjiang model that has been successfully and widely applied in China is presented. The automatic calibration of the model consists of two parts: water balance parameter and runoff routing parameter calibration. The former is based on a simple genetic algorithm (GA). The latter is based on a new method which combines a fuzzy optimal model (FOM) with a GA for solving the multiple objective runoff routing parameters calibration problem. Except for the specific fitness where the membership degree of alternative obtained by FOM with limited alternatives and multi-objectives is employed, the GA with multiple objectives in this paper is otherwise the same as the simple GA. The parameter calibration includes optimization of multiple objectives: (1) peak discharge, (2) peak time and (3) total runoff volume. Thirty-four historical floods from 12 years in the Shuangpai Reservoir are applied to calibrate the model parameters whilst 11 floods in recent 2 years are utilized to verify these parameters. Results of this study and application show that the hybrid methodology of GAs and the FOM is not only capable of exploiting more the important characteristics of floods but also efficient and robust.
Rights: Journal of Hydrology © 2002 Elsevier Science B.V. The journal web site is located at http://www.sciencedirect.com.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/1192
DOI: 10.1016/S0022-1694(02)00122-1
ISSN: 0022-1694
Appears in Collections:CEE Journal/Magazine Articles

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