[SciPy-User] lower bounds argument for scipy.optimize.anneal

Nathan Harmston iwanttobeabadger@googlemail....
Mon Oct 4 11:59:11 CDT 2010


Hi,

So I'm trying to use the siman function to minimise a likelihood function:

print anneal(anneal_ll,[100.0, 100.0, 100.0, 100.0, 100.0, 100.0,
100.0, 100.0, 100.0, 100.0, 100.0, 100.0],lower=[0.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0],
full_output=1,feps=1e-4,maxiter=1000000000,schedule='cauchy')

My parameters estimate properly however I get negative values for some
of the parameters. I thought the lower argument specified the lowest
value a parameter could take? Am I doing something incredibly stupid
or is this functionality not implemented?

Many thanks in advance,

Nathan Harmston

-- 
Nathan Harmston
PhD Researcher: Theoretical Systems Biology
Biochemistry Building
Department of Biological Sciences
Imperial College London
SW7 2AY London
Tel: +44 (0)20 7594 5044

Theoretical Systems Biology - Imperial College London
http://www3.imperial.ac.uk/theoreticalsystemsbiology/people/nathanharmston

http://biogeeks.wordpress.com/
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