A Model Selection Procedure for Stream Re-Aeration Coefficient Modelling

Omole, D. O. and Ndambuki, J.M. and Musa, G. A. and Longe, E.O. and Badejo, A.A and Kupolati, W.K. (2015) A Model Selection Procedure for Stream Re-Aeration Coefficient Modelling. Modern Applied Science, 9 (9). pp. 138-160. ISSN 1913-1844

PDF Download (1163Kb)

Abstract

Model selection is finding wide applications in a lot of modelling and environmental problems. However, applications of model selection to re-aeration coefficient studies are still limited. The current study explores the use of model selection in re-aeration coefficient studies by combining several suggestions from numerous authors on the interpretation of data regarding re-aeration coefficient modelling. The model selection procedure applied in this research made use of Akaike information criteria, measures of agreement such as percent bias (PBIAS), Nash-Sutcliffe Efficiency (NSE) and root mean square error (RMSE) observation Standard deviation Ratio (RSR) and gragh analysis in selecting the best performing model. An algorithm prescribing a generic model selection procedure was also provided. Out of ten candidates models used in this study, the O’Connor and Dobbins (1958) model emerged as the top performing model in its application to data collected from River Atuwara in Nigeria. The suggested process could save software and model developers lots of time and resources, which would otherwise be spent in investigating and developing new models. The procedure is also ideal in selecting a model in situations where there is no overwhelming support for any particular model by observed data.

Item Type:	Article
Uncontrolled Keywords:	model selection, information criteria, measures of agreement, re-aeration coefficient, stream, modelling
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Dr D.O. OMOLE
Date Deposited:	20 Oct 2015 11:32
Last Modified:	20 Oct 2015 11:32
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/5599

Available Versions of this Item

• A Model Selection Procedure for Stream Re-Aeration Coefficient Modelling. (deposited 14 Oct 2015 10:53)
  • A Model Selection Procedure for Stream Re-Aeration Coefficient Modelling. (deposited 20 Oct 2015 11:32) [Currently Displayed]

Actions (login required)

View Item