AW: [Gretl-devel] bfgs: failed to match initial value

The applied patch alters the criteria for issuing an "failed to macht initital vaue"-error again. d is only subtracted from fmax, if d was used, i.e. crit_ok is true. But if Sven is right, the patch doesn't solve the real issue here. Christoph ________________________________________ Von: gretl-devel-bounces(a)lists.wfu.edu [gretl-devel-bounces(a)lists.wfu.edu] im Auftrag von Sven Schreiber [svetosch(a)gmx.net] Gesendet: Freitag, 3. Juli 2009 08:19 An: Gretl development Betreff: Re: [Gretl-devel] bfgs: failed to match initial value Am 02.07.2009 22:03, Klein, Christoph schrieb: Without really knowing the code context and thus at the risk of babbling stupid things, shouldn't the case of d<0 then be ruled out? That is, change the criterion in line 544 to f >= fmax + max(0,d)? Because otherwise it seems that starting from an optimum the negative gradient moves you away from the maximum but f >= fmax + d will be true when d<0 and thus gretl thinks it's going in the right direction. just a thought, sven _______________________________________________ Gretl-devel mailing list Gretl-devel(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-devel