Re: [modeller_usage] problems with randomization

[Modeller Caretaker <>]

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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