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January 2016

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Subject:
ClassCastException in MultiobjectiveFitness
From:
Atm Golam Bari <[log in to unmask]>
Reply To:
ECJ Evolutionary Computation Toolkit <[log in to unmask]>
Date:
Sat, 2 Jan 2016 23:20:20 -0500
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Hi All,

Happy new year !

>>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?

>> I understand that xyz/NSGA2MultiobjectiveFitness sets pareto rank of each individuals. Does this rank act as  individual's fitness value while individuals are selected in the bottom of breeding pipeline (note: I am using tournamentselection in param filet)? Or I need to implement custom selection algorithm to act pareto rank as fitness ?

Thanks in advance 
-Bari

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