Zheng, the standard thing I'd say would be to reduce the population  
size to 1, create a file with the best individual and load it at  
runtime into the population, and use evaluate() to test the  
individual.  But that's pretty tough for a Java newbie to grok.  What  
I ought to do is think about creating a simple test harness that makes  
this procedure easy for you -- it's a common need.  I could do it in a  
few days maybe (no promises!).  Let me mull it over.

Sean

On Sep 4, 2009, at 9:19 AM, Claes Gyllenswärd wrote:

> 2009/9/3 Zheng Yin <[log in to unmask]>
> Hi, Sean,
> I have a problem, which is not really ECJ question. I am using ECJ  
> to do
> the symbolic regression. I would like to test the best individual  
> (around
> 400 nodes) at out of sample off line. Is there any code in ECJ I could
> use?  I am a Java beginner.
>
> many thanks
> Zheng
>
> While it's very possible that Sean knows a lot better than me, I  
> don't understand your question at all, so perhaps you will want to  
> clarify.
> More specifically, you want to do something offline, but what is  
> online in the first place?