[SciPy-user] Can scipy resolve this problem?

Matthieu Brucher matthieu.brucher@gmail....
Wed Jan 7 02:24:21 CST 2009


Then perhaps the best course of action is to explicitely test every
possibility and then take the argmin ?

Matthieu

2009/1/7 zhang chi <zhangchipr@gmail.com>:
> Thank you.
>
> "step" I mean if x1 $\in$ [2,5], the x1 $\in$ [2,3,4,5]
>
> On Wed, Jan 7, 2009 at 4:15 PM, Robert Kern <robert.kern@gmail.com> wrote:
>>
>> On Wed, Jan 7, 2009 at 02:05, zhang chi <zhangchipr@gmail.com> wrote:
>> > hi
>> >     I want to get the minimum value of a derivative free optimization
>> > problem.  The function F(x1,x2) can't be given the expression, but the
>> > function can be realized using python language.  Where x1 $\in$ [1,100],
>> > and
>> > x2 $\in$ [50,80]. Can scipy resolve this problem?
>>
>> Use fmin_tnc, fmin_l_bfgs_b, or fmin_slsqp for plain bounds like this.
>>
>> > I have tried the cobyla,
>> > but it cannot find the minimum value.
>> > By the way, the step of x1 and x2 is 1.
>>
>> What do you mean by "the step"?
>>
>> --
>> Robert Kern
>>
>> "I have come to believe that the whole world is an enigma, a harmless
>> enigma that is made terrible by our own mad attempt to interpret it as
>> though it had an underlying truth."
>>  -- Umberto Eco
>> _______________________________________________
>> SciPy-user mailing list
>> SciPy-user@scipy.org
>> http://projects.scipy.org/mailman/listinfo/scipy-user
>
>
> _______________________________________________
> SciPy-user mailing list
> SciPy-user@scipy.org
> http://projects.scipy.org/mailman/listinfo/scipy-user
>
>



-- 
Information System Engineer, Ph.D.
Website: http://matthieu-brucher.developpez.com/
Blogs: http://matt.eifelle.com and http://blog.developpez.com/?blog=92
LinkedIn: http://www.linkedin.com/in/matthieubrucher


More information about the SciPy-user mailing list