The GEP package is in the contrib directory. So Make sure that <ECJ home>/contrib/gep is in your classpath. Keith On Tue, 2009-06-02 at 15:12 +0200, Alejandro Rodríguez González wrote: > Hello, > > > I'm trying to execute some examples of GEP extension for EJC developed > by Bob Orchard but i'm having some problems. > > > After search some parameter files like "gep.params" and "ec.params" > and found it on koders.com, i modify the test1.param example of GEP > examples in order to make the example works. > > > The problem now is that ECJ can't find the class > "GEPSimpleStatistics", that, in the test1.param file is mentioned to > be used by ECJ: > > > state = ec.gep.GEPSimpleStatistics > > > The output that i obtain is the next: > > > ________________ > > > C:\Descargas\ecj\ecj>java -classpath ./;./start/javacsv.jar ec.Evolve > -file c:\D escargas\ecj18Gep\ecj18MultipleChromosomes\ec\app\gep\test1 > \test1.params | ECJ | An evolutionary computation system (version 18) > | By Sean Luke | Contributors: L. Panait, G. Balan, S. Paus, Z. > Skolicki, R. Kicinger, E. Popov ici, | J. Harrison, J. Bassett, R. > Hubley, A. Desai, and A. Chircop | URL: > http://cs.gmu.edu/~eclab/projects/ecj/ | Mail: [log in to unmask] | > (better: join ECJ-INTEREST at URL above) | Date: June 23, 2008 | > Current Java: 1.6.0_13 / Java HotSpot(TM) Client VM-11.3-b02 | > Required Minimum Java: 1.3 Exception in thread "main" > ec.util.ParamClassLoadException: Class not found: > ec.gep.GEPSimpleStatistics PARAMETER: state EXCEPTION: > java.lang.ClassNotFoundException: ec.gep.GEPSimpleStatistics at > ec.util.ParameterDatabase.getInstanceForParameter(ParameterDatabase.j > ava:451) at ec.Evolve.initialize(Evolve.java:362) at > ec.Evolve.main(Evolve.java:627) > > > ________________ > > > I was searching this classes, and i found that exists in EJC > ( http://www.koders.com/noncode/fid450A0F990F704BEDED764BB1A30573181C3349C9.aspx?s=Pdef#L55 ), but in the package that i download from original EJC page, this classes are not included, and i don't know where download they. > > > Can anyone help me with that? > > > Thanks.