Statistical Indicators

[Citra Rahma niar]

Good night, 

Can anyone explain the function of each of the following statistical indicators to the model: 

1. Percent bias (PBIAS), 

2. Kling-Gupta Efficiency (KGE), 

3. Coefficient of Determination (R2), 

4. Nash-Sutcliffe Efficiency (NSE), 

5. Root Mean Square Error (RMSE) Standard-deviation Ratio (RSR) 

Especially RSR, NSE, and KGE I still don't understand the function of each of these indicators, I hope friends here will help me

Thank you 

Regards

Citra from Indonesia

[Willem Vervoort]

Dear Citra,

I suggest this paper, which is excellent in explaining many different performance indicators:

Bennett, N.D. et al., 2013. Characterising performance of environmental models. Environmental Modelling & Software, 40(0): 1-20. DOI:http://dx.doi.org/10.1016/j.envsoft.2012.09.011

After reading that paper, I would, for the KGE, tackle the original paper:

Gupta, H.V., Kling, H., Yilmaz, K.K., Martinez, G.F., 2009. Decomposition of the mean squared error and NSE performance criteria: Implications for improving hydrological modelling. Journal of Hydrology, 377(1–2): 80-91. DOI:http://dx.doi.org/10.1016/j.jhydrol.2009.08.003

This gives you the best possible explanation.

Willem

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[Citra Rahma niar]

thank you sir, this paper is very helpful

Regards

Citra from Indonesia

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