[SciPy-dev] Trouble with optimize.fmin_ncg
Stefan van der Walt
stefan at sun.ac.za
Wed Jul 25 04:45:58 EDT 2007
The optimisation converges under scipy r3116:
$ python test_tnc.py
try fmin_bfgs
Optimization terminated successfully.
Current function value: 0.000540
Iterations: 263
Function evaluations: 266
Gradient evaluations: 266
Rayleigh quotient BFGS 0.000540272922563
fmin_bfgs OK
try fmin_ncg
Optimization terminated successfully.
Current function value: 0.000538
Iterations: 13
Function evaluations: 33
Gradient evaluations: 13
Hessian evaluations: 13
Rayleigh quotient NCG 0.000537952836927
Regards
Stéfan
On Tue, Jul 24, 2007 at 11:12:23PM -0400, Alan G Isaac wrote:
> On Tue, 24 Jul 2007, dmitrey apparently wrote:
> > can anyone who didn't update scipy from svn during last
> > 10-11 days run Nils example?
>
> The core of Nil's example is below.
> Get the data from here:
> http://math.nist.gov/MatrixMarket/data/Harwell-Boeing/lanpro/nos4.html
> Cheers,
> Alan Isaac
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