Chapter
Apr 26, 2012
Improving Accuracy of IDF Curves Using Long- and Short-Duration Separation and Multi-Objective Genetic Algorithm
Authors: Taesoon Kim, Ph.D. [email protected]), Ju-Young Shin [email protected]), Kewtae Kim [email protected]), and Jun-Haeng Heo [email protected])Author Affiliations
Publication: World Environmental and Water Resources Congress 2008: Ahupua'A
Abstract
Multi-objective genetic algorithm (MOGA) and cumulative distribution function (CDF) are used to improve the accuracy of IDF curve. Rainfall durations are divided into short- and long-duration using root mean squared error (RMSE) and relative root mean squared error (RRMSE) between rainfall quantiles by IDF curve and at-site frequency analysis. RMSE could be used for estimating parameters of relatively long-duration, and RRMSE for short-duration. The compromised solutions could be ahieved through MOGA with two multi-objective functions. The duration separating technique called C0MBI_1 is suggested and the comparison with the five different parameter estimation methods provides COMBI_1 is superior to the other methods.
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© 2008 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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BK21 Lecturer, School of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, South Korea (. E-mail: [email protected])
Graduate student, School of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, South Korea (. E-mail: [email protected])
Graduate student, School of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, South Korea (. E-mail: [email protected])
Professor, School of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, South Korea (. E-mail: [email protected])
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