[SciPy-user] Minimizing functions of two variables with fmin bfgs
ckkart at hoc.net
Mon Nov 14 09:34:02 CST 2005
Alan G Isaac wrote:
> On Mon, 14 Nov 2005, Christian Kristukat apparently wrote:
>>Unfortunately the minimizers in scipy.optimize use
>>different input types. fmin_bfgs needs that the
>>derivatives are returned as a scipy.array, however e.g.
>>fmin_tnc insists on recieving a python list. Btw. the
>>minimizer will fail with your function as it doesn't have
>>a global minimum.
> Is this just historical accident?
> On the face of it, any sequence should do.
I agree. But currently that's not the case. Especially considering the temporary
memory consumption when converting array<->list this should be taken care of.
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