Re: fmin_powell returns incorrect parameters for simple least-squares problem
Sara Fridovich-Keil <[email protected]>
| Newsgroups | gmane.comp.python.scientific.devel |
|---|---|
| Message-ID | <[email protected]> |
Hi, I haven’t tested Powell on these (or have time to now unfortunately), but I did previously add a test bench of optimization problems in https://github.com/scipy/scipy/pull/14579 <https://github.com/scipy/scipy/pull/14579> if it’s useful. Best, Sara > On Mar 6, 2023, at 4:17 AM, Matthew Brett <[email protected]> wrote: > > Hi, > > Sorry to keep on at this one, but it is worrying me. > > Do we have anyone reading or known to us who can give a fairly > definitive answer to: > > On Thu, Mar 2, 2023 at 10:01 PM Matthew Brett <[email protected]> wrote: > [snip] >> ? Is it really true that the modification assists Powell in handling >> long skinny valleys? If so, does it work less well in other >> situations? Has anyone compared the algorithms across a good range of >> problems? > > Cheers, > > Matthew > _______________________________________________ > SciPy-Dev mailing list -- [email protected] > To unsubscribe send an email to [email protected] > https://mail.python.org/mailman3/lists/scipy-dev.python.org/ > Member address: [email protected] _______________________________________________ SciPy-Dev mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/scipy-dev.python.org/ Member address: [email protected]