[SciPy-Dev] change in 0.8 to fmin

[josef.pktd at gmail.com]

On Tue, Aug 9, 2016 at 7:27 PM, Pauli Virtanen <pav at iki.fi> wrote:
> Tue, 09 Aug 2016 19:03:14 -0400, josef.pktd kirjoitti:
>> Was there a change related to starting values or stepsize in the latest
>> release in Nelder-Mead fmin?
>> I only saw changes related to convergence criteria in browsing the
>> scipy.optimize history.
>
> I don't think so. Option to specify the initial simplex was also added,
> but this should not have changed the default one. Indeed, I don't see any
> change between 0.17.0 and 0.18.0 in examples.
>
> If your function modifies the input vector (if yes, probably a bad idea),
> that may change things, since copying is not necessarily managed the same
> way.

Thanks,

I consider this as indeterminate sign then, and fix the unit test.

I'm not very familiar with that code, but I don't think there is any
modification of the input vector. The parameters are put into a larger
array that has just a few unkown or unconstrained values.

Josef


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