System Identification toolbox result

can someone explain to me the difference between fit to estimation and best fit in System Identification Toolbox? Thanks in advance

Answer 1

[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?