Universiti Teknologi Malaysia Institutional Repository

Daily streamflow forecasting using simplified rule-based fuzzy logic system

Yaacob, Mohd. Shafiek and Jamaluddin, Hishamuddin and Harun, Sobri (2005) Daily streamflow forecasting using simplified rule-based fuzzy logic system. The Journal of The Institution of Engineers, Malaysia, 66 (4). pp. 23-28. ISSN 0126-513X

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In this study, a simplified fuzzy logic system with uniform partitions in the input space is proposed for forecasting the dailystreamflow of four river systems in Malaysia. The proposed simplified fuzzy logic system was calibrated (trained) using backpropagation(BP) and recursive prediction error (RPE) algorithms. For each catchment, the calibration data set consisted ofthree consecutive years of daily rainfall and streamflow records. Verifications of the calibrated models were done using the data set of the following year. The performances of the simplified fuzzy logic system and the normal fuzzy logic system are compared,with each model having the same number of adjustable parameters. The results are also compared with the auto-regressive with exogenous input model. This study has shown that the proposed RPE algorithm performed better than the more popular BPalgorithm. The results show that all the simplified fuzzy logic system models registered better performance measures for the calibration data sets. However, variable results were obtained for the predictions of the verification data sets.

Item Type:Article
Uncontrolled Keywords:Fuzzy Systems, Rainfall-runoff Modelling, Time Series Forecasting, Training Algorithms
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:7030
Deposited By: Dr Abd Rahim Abu Bakar
Deposited On:15 Dec 2008 08:35
Last Modified:12 Apr 2017 00:49

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