System Identification toolbox result

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Noor Azlyn Ab Ghafar
回答： Debraj Bhattacharjee 2022-7-25
can someone explain to me the difference between fit to estimation and best fit in System Identification Toolbox? Thanks in advance

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Debraj Bhattacharjee
Normalized Root Mean Square (NRMSE) criterion is used to generate the fit % number. It is a measure of how much better the model is in reproducing the observed data relative to the mean of the data. This is what is called the 'Fit to Estimation Data'. See:
http://www.mathworks.com/help/ident/ref/goodnessoffit.html
Can you tell me where you see the 'Best Fit' to the model?

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