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| Subject | ： Re^2: SAD Update. V1.0.10.4.10a20 Fit |
| Date | ： 2011/02/24(Thu) 09:05:52 |
| Contributor | ： K. Oide |
There was a mistake in the expression:
Dear Users,
1. Now Fit has a new option Cutoff to specify the saturation amplitude to calculate chi-square:
chi-suare = Sum_i ( Min[Cutoff, Max[-Cutoff, (d_i - f_ i) / sigma_i]]^2 ) ,
which is a sort of robust M-Estimates. By Cutoff, the fit tends to ignore tail data which are beyond Cutoff.
If Cutoff is zero (default), it is ignored.
> Dear Users,
>
> 1. Now Fit has a new option Cutoff to specify the saturation amplitude to calculate chi-square:
>
> chi-suare = Sum_i ( Min[Cutoff, Max[-Cutoff, (d_i - f_ i) / sigma_i]] ) ,
>
> which is a sort of robust M-Estimates. By Cutoff, the fit tends to ignore tail data which are beyond Cutoff.
> If Cutoff is zero (default), it is ignored.