淡江大學機構典藏:Item 987654321/67818
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    题名: Comparison of static-feedforward and dynamic-feedback neural networks for rainfall–runoff modeling
    作者: 張麗秋;Chang, Li-chiu;Chiang, Yen-ming;Chang, Fi-john
    贡献者: 淡江大學水資源及環境工程學系
    关键词: Rainfall–runoff processes;Streamflow forecasting;Neural networks;Static systems;Dynamic systems
    日期: 2004-05-01
    上传时间: 2011-10-23 02:05:31 (UTC+8)
    出版者: Elsevier B.V
    摘要: A systematic comparison of two basic types of neural network, static and dynamic, is presented in this study. Two back-propagation (BP) learning optimization algorithms, the standard BP and conjugate gradient (CG) method, are used for the static network, and the real-time recurrent learning (RTRL) algorithm is used for the dynamic-feedback network. Twenty-three storm-events, about 1632 rainfall and runoff data sets, of the Lan-Yang River in Taiwan are used to demonstrate the efficiency and practicability of the neural networks for one hour ahead streamflow forecasting. In a comparison of searching algorithms for a static network, the results show that the CG method is superior to the standard BP method in terms of the efficiency and effectiveness of the constructed network's performance. For a comparison of the static neural network using the CG algorithm with the dynamic neural network using RTRL, the results show that (1) the static-feedforward neural network could produce satisfactory results only when there is a sufficient and adequate training data set, (2) the dynamic neural network generally could produce better and more stable flow forecasting than the static network, and (3) the RTRL algorithm helps to continually update the dynamic network for learning—this feature is especially important for the extraordinary time-varying characteristics of rainfall–runoff processes.
    關聯: Journal of Hydrology 290(3-4), pp.297-311
    DOI: 10.1016/j.jhydrol.2003.12.033
    显示于类别:[水資源及環境工程學系暨研究所] 期刊論文

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