Hey Rob, Look in the coevolve package, particularly at the CompetitiveEvaluator class. Best, Liviu. On Aug 20, 2006, at 4:13 PM, Robert Baruch wrote: > Hi all, > > I'm using ECJ 15. I'm having a difficult time finding an API > accessible through GPProblem.evaluate > that will let me pick a random opponent individual to play against > the current individual under > evaluation. > > Any ideas? > > Thanks! > > --Rob