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contributor authorBao Weimin
contributor authorLi Qian
date accessioned2017-05-08T21:49:05Z
date available2017-05-08T21:49:05Z
date copyrightJanuary 2012
date issued2012
identifier other%28asce%29he%2E1943-5584%2E0000436.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/63294
description abstractBecause the problem of prediction in ungauged basins (PUB) has become a central theme of hydrological research, there is a clear need to have an effective and efficient method that can help to transfer information from gauged basins to ungauged ones. Previous research relating the parameters of a hydrologic model to physical drainage basin characteristics has had limited success. Conventional regression procedures do not take into account multicollinearity among the basin characteristics, which have a great effect on the stability of regression equations. This study presents an unbiased ridge regression estimate (URR) that can provide robust regression equations in the presence of multicollinearity. The proposed method is applied to estimate parameters of the Xinanjiang model in 20 watersheds located in southeastern China. Compared with conventional estimations, such as ordinary least squares estimate and ordinary ridge regression estimate, the URR was reduced by 78% for root mean square error, 47% for variance, and 13.1% for Akaike’s Information Criterion. The coefficient of determination
publisherAmerican Society of Civil Engineers
titleEstimating Selected Parameters for the XAJ Model under Multicollinearity among Watershed Characteristics
typeJournal Paper
journal volume17
journal issue1
journal titleJournal of Hydrologic Engineering
identifier doi10.1061/(ASCE)HE.1943-5584.0000415
treeJournal of Hydrologic Engineering:;2012:;Volume ( 017 ):;issue: 001
contenttypeFulltext


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