Dear all, I ran into problems using weighted least squares fitting in GSL. For some reason I need to use IRLS modification of this method, so the weights are recomputed in every iteration. In the case the weights are computed at the beginning and being constant throug all the iterations, the procedure works fine. But when I adjust the weights in every iteration, this usually leads to an error:
27 iteration is not making progress towards solution I think it is because there are some internally tested conditions and some of them are not satisfied in this case. For example, in SAS, there is a special parameter to relax those conditions: http://support.sas.com/documentation/cdl/en/statug/63033/HTML/default/viewer.htm#statug_nlin_sect034.htm Is something like this possible with GSL ? Thank you in advance. David _______________________________________________ Help-gsl mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-gsl
