getting very high MSE and an R almost equal to 1!!
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Med Aymane Ahajjam
le 2 Mar 2017
Commenté : Greg Heath
le 21 Oct 2018
I am trying to model PV output power based on 6 parameters (components of solar irradiance, ambient temperature, wind speed, wind direction, timestamp). I have used the nftool but I have noticed that the values of MSE for training, validation and testing are very high, while R are always almost equal to one , as shown in the picture attached. Do you think I should change MSE parameters to normalized percent ? or something else to get better performance with accurate results..
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Greg Heath
le 7 Mar 2017
Your R looks pretty good. Therefore your MSE is relatively low compared to the average target variance because
R = sqrt( 1 - MSE/mean(var(t',1)) )
Thank you for accepting my answer
Greg
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Greg Heath
le 21 Oct 2018
Yes.
Define a performance parameter that is more relative to the problem.
Then calculate it and post it.
Greg
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