Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30158
Title: A hybrid algorithm in river stage forecasting
Authors: Chau, KW 
Issue Date: 2006
Publisher: Watam Press
Source: Dynamics of continuous, discrete & impulsive systems. Series B, Applications & algorithms, 2006, v. 13e, p. 402-405 How to cite?
Journal: Dynamics of continuous, discrete & impulsive systems. Series B, Applications & algorithms 
Abstract: An accurate forecast of river stage is very significant so that there is ample time for the pertinent authority to issue a forewarning of the impending flood and to implement early evacuation measures as required. Since a variety of existing process-based hydrological models involve exogenous input and different assumptions, artificial neural networks have the potential to be a cost-effective solution. In this paper, a split-step particle swarm optimization (PSO) model is developed and applied to train multi-layer perceptrons for forecasting real-time water levels in Shing Mun River of Hong Kong with different lead times on the basis of the upstream gauging stations or stage/time history at the specific station. This paradigm is able to combine the advantages of global search capability of PSO algorithm in the first step and local fast convergence of Levenberg-Marquardt algorithm in the second step. The results demonstrate that it is able to attain a higher accuracy in a much shorter time when compared with the benchmarking backward propagation algorithm as well as the standard PSO algorithm.
Description: International Conference on Sensing, Computing and Automation, Chongqing, Peoples R China, 8-11 May 2006
URI: http://hdl.handle.net/10397/30158
ISSN: 1492-8760
EISSN: 1918-2538
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