[SciPy-dev] ticket 285 (changes in optimize.brent)
dmitrey
openopt at ukr.net
Mon Jul 30 15:33:46 EDT 2007
hi all,
rev. 3209 contains changes to optimize.brent (I implemented the brent
class in the way proposed by Alan Isaac + 4 tests related to brent were
added).
So I guess the ticket 285 should be closed.
Also, I have changed some docstrings related to brent and some other
funcs ():
If bracket is two numbers *(a,c)* then they are
assumed to be a starting interval for a downhill bracket search
(see bracket);* it doesn't always mean that obtained solution will
satisfy a<=x<=c*.
(As for me some weeks ago I was surprised to obtain solution from
outside of the (a,c) interval, MATLAB has only one func fminbound that
yields solution strictly from the given interval, but some
scipy.optimize line-search routines use strictly the interval and some
other, like brent, use only as starting interval for bracket search, and
this is not properly descriebed in documentation).
Regards, D.
More information about the SciPy-Dev
mailing list