At Mon, 27 Jul 2009 18:09:11 +0200, Oliver Jennrich wrote: > One of the differences I found while briefly looking at the code is > the different calculation of the simplex size. 'simplex' uses and |..| > -norm, wheras simplex2 uses |..|^2. The latter is much more > susceptible to very asymmetric simplices. > > Additional, the point updater is different, tracking the changes in > size and in the center point as well. > > The critical thing seems to be the calculation of the size.
I believe the size (norm) is not actually used in the minimisation, only for the termination condition. So it must be a problem with the individual steps. In the example program the difference first appears on the 5th iteration. -- Brian Gough _______________________________________________ Bug-gsl mailing list [email protected] http://lists.gnu.org/mailman/listinfo/bug-gsl
