Skip to main content

Research Repository

See what's under the surface

Advanced Search

DAMP: a protocol for contextualising goodness-of-fit statistics in sediment-discharge data-driven modelling

Abrahart, R.J.; Mount, Nick J.; Ab Ghani, Ngahzaifa; Clifford, Nicholas J.; Dawson, C.W.

Authors

R.J. Abrahart bob.abrahart@nottingham.ac.uk

Nick J. Mount nick.mount@nottingham.ac.uk

Ngahzaifa Ab Ghani

Nicholas J. Clifford

C.W. Dawson c.w.dawson1@lboro.ac.uk



Abstract

The decision sequence which guides the selection of a preferred data-driven modelling solution is usually based solely on statistical assessment of fit to a test dataset, and lacks the incorporation of essential contextual knowledge and understanding included in the evaluation of conventional empirical models. This paper demonstrates how hydrological insight and knowledge of data quality issues can be better incorporated into the sediment-discharge data-driven model assessment procedure: by the plotting of datasets and modelled relationships; and from an understanding and appreciation of the hydrological context of the catchment being modelled. DAMP: a four-point protocol for evaluating the hydrological soundness of data-driven single-input single-output sediment rating curve solutions is presented. The approach is adopted and exemplified in an evaluation of seven explicit sediment-discharge models that are used to predict daily suspended sediment concentration values for a small tropical catchment on the island of Puerto Rico. Four neurocomputing counterparts are compared and contrasted against a set of traditional log-log linear sediment rating curve solutions and a simple linear regression model. The statistical assessment procedure provides one indication of the best model, whilst graphical and hydrological interpretation of the depicted datasets and models challenge this overly-simplistic interpretation. Traditional log-log sediment rating curves, in terms of soundness and robustness, are found to deliver a superior overall product — irrespective of their poorer global goodness-of-fit statistics.

Journal Article Type Article
Publication Date Nov 1, 2011
Journal Journal of Hydrology
Print ISSN 0022-1694
Electronic ISSN 0022-1694
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 409
Issue 3-4
APA6 Citation Abrahart, R., Mount, N. J., Ab Ghani, N., Clifford, N. J., & Dawson, C. (2011). DAMP: a protocol for contextualising goodness-of-fit statistics in sediment-discharge data-driven modelling. Journal of Hydrology, 409(3-4), doi:10.1016/j.jhydrol.2011.08.054
DOI https://doi.org/10.1016/j.jhydrol.2011.08.054
Publisher URL http://www.sciencedirect.com/science/article/pii/S002216941100610X
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Hydrology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hydrology, 409(3-4), (2011), doi: 10.1016/j.jhydrol.2011.08.054

Files

DAMP (revised) v06.pdf (1.1 Mb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





You might also like



Downloadable Citations

;