Re: [gplab-users] Symbolic Regression Issue

[Sara S. <sa...@de...>]

Hello,

I would need to see other parameters related to the limits, like 
'realmaxlevel'. Something is definitely wrong. Can you send me the list 
of all your parameters? Thanks.

Sara


Wasif Afzal wrote:

> Hi All,
>  
> I am running a simple symbolic regression problem in GPLAB. I have two 
> files, one with input data and other with output data, which I use to 
> start the GPLAB run.
>  
> Before startting the run, I have set the following parameters:
>  
> fixedlevel=1
> dynamiclevel='0'
> depthnodes= '1'
>  
> The above setting means that I have the {'strictdepth'} filter on, which 
> should reject an individual deeper than the maximum allowed depth, which 
> is determined by the parameter realmaxlevel and equals 17 (for 
> depthnodes='1').
>  
> I run GPLAB for 100 generations and 150 population size which remains 
> fixed in all generations.
>  
> During several of the generations, I observe that there are individuals 
> whose depths are greater than 17 and are being displayed by GPLAB. In 
> fact, I see that at the end of the run, the best so far individual has 
> depth 31. My expectation was that GPLAB should reject individuals having 
> depth greater than 17, based on the parameter settings.
>  
> Please let me know if anybody knows the reason behind such a behavior or 
> if I have done a mistake in understanding parameter settings.
>  
> Best Regards,
> Wasif
>  
>  
>  
> 
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