Journal Article10.1061/(ASCE)1084-0699(2006)11:6(597)
Evaluation of the Nash-Sutcliffe Efficiency Index
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TL;DR: In this article, the Nash-Sutcliffe efficiency index (Ef) is used for assessing the goodness of fit of hydrologic models. But, a method for estimating the statistical significance of sample values has not been documented; also, factors that contribute to poor sample values are not well understood.
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Abstract: The Nash–Sutcliffe efficiency index ( Ef ) is a widely used and potentially reliable statistic for assessing the goodness of fit of hydrologic models; however, a method for estimating the statistical significance of sample values has not been documented. Also, factors that contribute to poor sample values are not well understood. This research focuses on the interpretation of sample values of Ef . Specifically, the objectives were to present an approximation of the sampling distribution of the index; provide a method for conducting hypothesis tests and computing confidence intervals for sample values; and identify the effects of factors that influence sample values of Ef including the sample size, outliers, bias in magnitude, time-offset bias of hydrograph models, and the sampling interval of hydrologic data. Actual hydrologic data and hypothetical analyses were used to show these effects. The analyses show that outliers can significantly influence sample values of Ef . Time-offset bias and bias in magnit...
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References
River flow forecasting through conceptual models part I — A discussion of principles☆
J.E. Nash,J.V. Sutcliffe +1 more
TL;DR: In this article, the principles governing the application of the conceptual model technique to river flow forecasting are discussed and the necessity for a systematic approach to the development and testing of the model is explained and some preliminary ideas suggested.
23.3K
•Book
Hydrologic Analysis and Design
Richard H. McCuen
- 01 Jan 1989
TL;DR: In this paper, the authors present a survey of statistical methods in hydrology, including water yield and snowmelt runoff, water quality estimation, and water evaporation.
1K
Regionalisation of catchment model parameters
Ralf Merz,Günter Blöschl +1 more
TL;DR: In this article, the authors simulate the water balance dynamics of 308 catchments in Austria using a lumped conceptual model involving 11 calibration parameters for two non-overlapping 11-year periods of daily runoff data and compare regionalisation methods for estimating the model parameters in ungauged catchments, in terms of the model performance.
765
Criteria for Evaluation of Watershed Models
TL;DR: The report addresses the need for more complete parameter descriptions, unrealistic data needs, documentation, testing, and the lack of uniform criteria for evaluating a model's performance.
543
The general sampling distribution of the multiple correlation coefficient
TL;DR: In this article, the problem of the exact distribution of statistics in common use is the last to have resisted solution, and the solution introduces an extensive group of distributions, occurring naturally in the most diverse types of statistical investigation, and which in their mere mathematical structure supply an extension in a new direction of the entire system of distributions previously obtained.