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Flood frequency analysis at ungauged site using modified group method of data handling

Ismail, S. and Badyalina, B. and Shabri, A. and Mat Jan, N. A. and Pandhiani, S. M. (2018) Flood frequency analysis at ungauged site using modified group method of data handling. In: A letter on applications of mathematics and statistics. Penerbit UTHM, pp. 79-84.

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Abstract

Group Method of Data Handling (GMDH) have been applied within the various field of modelling and recently has been used to predict flood quantile at ungauged site. The objective of this paper to enhance the performance of GMDH model as a prediction tools known as Modified Group Method of Data Handling (MGMDH). In MGMDH model, PCA is implemented to reduce the complexity of GMDH network which increasing by addition of new layer. This paper uses data obtains from Department of Irrigation and Drainage Malaysia to predict T-year flood events for 20 catchments across the Peninsular Malaysia. The MGMDH model is compared to linear regression (LR) and GMDH model. Three quantitative standard statistical indices such as Mean Absolute Error (MAE), Root Mean Square Error (RMSE) and Nash-Sutcliffe Coefficient of Efficiency (CE) are employed. Based on these results, it was found that the MGMDH model outperformed the LR and GMDH model based on prediction performances.

Item Type: Book Section
Uncontrolled Keywords: GMDH, Flood Quantile, Hydrology
Subjects: T Technology > T Technology (General)
Depositing User: Mr Abdul Rahim Mat Radzuan
Date Deposited: 31 Oct 2019 02:41
Last Modified: 31 Oct 2019 02:41
URI: http://eprints.uthm.edu.my/id/eprint/11875
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