getting very high MSE and an R almost equal to 1!!

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Med Aymane Ahajjam 2017-3-2

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评论： Greg Heath 2018-10-21

采纳的回答： Greg Heath

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 2017-3-7

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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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Med Aymane Ahajjam 2017-3-7

Thank you Greg for your answer.. I was wondering if I should compute another performance parameter more relative to this problem? any suggestions?

Greg Heath 2018-10-21

Yes.

Define a performance parameter that is more relative to the problem.

Then calculate it and post it.

Greg

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