Subject | : Re: SAD Update. V1.0.10.4.10a20 Fit |
Date | : 2011/02/24(Thu) 09:04:26 |
Contributor | : K. Oide |
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.