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Re: [modeller_usage] problems with randomization



On 10/24/11 7:30 AM, Igor Dvortsov wrote:
i've noticed something strange: let's try build serie of models in
model_default.py-way, but with starting_model=1 and ending_model=10. we
get 10 different models a1..a10. let's do it one more time with same
script and we get another 10 models b1..b10. they are different between
themself but coincide with previous serie, such as a1=b1..a10=b10.
i just don't understand it. each model is calculated by
automodel.single_model(), inside it method
self.randomize_initial_structure(atmsel) is called. so randomization
takes place. how it can be that these randomizations led to coinciding
results?

That's not strange at all - Modeller is deterministic, so will give you the same results given the same input conditions and random seed. If you want different results, change the random seed:
http://salilab.org/modeller/9.10/manual/node111.html

	Ben Webb, Modeller Caretaker
--
             http://www.salilab.org/modeller/
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