[SciPy-user] Generating tuples and lists connected with optimize.fmin_l_bfgs_b(func, guess, bounds=bounds, iprint=-1)

Nils Wagner nwagner at mecha.uni-stuttgart.de
Fri Jul 1 02:14:01 CDT 2005


Nils Wagner wrote:

> Hi all,
>
> Sorry for this inquiry but how can I initialize the list "bounds" and 
> the tuple "guess" more efficiently ?
> The entries in bounds are identical for each design variable, while 
> the initial guess consists of two different values.
> So how can I benefit from this pattern in building "bounds" and 
> "guess" for 2n design variables ?
>
> bounds = [(0.0,2.0), (0.0,2.0), (0.0,2.0), (0.0,2.0), (0.0,2.0), 
> (0.0,2.0)]
> guess = 2.0,2.0,2.0,1.0,1.0,1.0
>
> A small example would be appreciated.
>
> Thanks in advance
>                                         Nils
>
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Is there a better way for building bounds ?

bounds=[]
for i in arange(0,2*n):
  bounds = bounds + [(0.0,2.0)]

Nils

 



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