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http://dx.doi.org/10.5391/JKIIS.2006.16.5.537

Rainfall-Runoff Analysis Utilizing Multiple Impulse Responses  

Yoo, Chul-Sang (Dept. of Civil and Environmental Engineering, Korea University)
Park, Joo-Young (Dept. of Control and Instrumentation Engineering, Korea University)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.16, no.5, 2006 , pp. 537-543 More about this Journal
Abstract
There have been many recent studies on the nonlinear rainfall-runoff modeling, where the use of neural networks is shown to be quite successful. Due to fundamental limitation of linear structures, employing linear models has often been considered inferior to the neural network approaches in this area. However, we believe that with an appropriate extension, the concept of linear impulse responses can be a viable tool since it enables us to understand underlying dynamics principles better. In this paper, we propose the use of multiple impulse responses for the problem of rainfall-runoff analysis. The proposed method is based on a simple and fixed strategy for switching among multiple linear impulse-response models, each of which satisfies the constraints of non-negativity and uni-modality. The computational analysis performed for a certain Korean hydrometeorologic data set showed that the proposed method can yield very meaningful results.
Keywords
Rainfall-runoff analysis; Impulse response; Optimization;
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