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January 2016

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Subject:
From:
"BARI, ATM GOLAM" <[log in to unmask]>
Reply To:
ECJ Evolutionary Computation Toolkit <[log in to unmask]>
Date:
Sun, 3 Jan 2016 12:35:45 -0500
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Thanks Sean.
I forgot to change fitness class name in the parameter. It works by
changing the appropriate name. I am subclassing MultiobjectiveFitness.java
and xyz is the child class. Thanks again.

BTW, I had a second asking on ranking vs fitness also. Would you please
clarify the concept.

-Bari

On Sun, Jan 3, 2016 at 12:34 AM, Sean Luke <[log in to unmask]> wrote:

> On Jan 2, 2016, at 11:20 PM, Atm Golam Bari <[log in to unmask]> wrote:
>
> >>> I am using MultiobjectiveFitness.java  and
> NSGA2MultiobjectiveFitness.java in my own evaluator as is but renaming
> NSGA2MultiobjectiveFitness to xyz. When I call
> assignFrontRanks(Subpopulation subpop) inside the evluator (same as
> NSGA2Evaluator calls this method), I get ClassCastException Error on the
> line ((xyz)(((Individual)(front.get(ind))).fitness)).rank = rank; I can't
> find the reason. Any clue?
>
> Sound like your fitness object can't be cast to an xyz.  This implies that
> it's probably still an NSGA2MultiobjectiveFitness.  Did you change what the
> fitness class was in your parameter file?
>
> Why are you renaming MultiobjectiveFitness.java?  This is highly
> nonstandard and seems like something that's going to cause a whole heap of
> problems.  Why not just subclass it?
>
> Sean
>


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