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From: | |
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Date: | Wed, 1 Oct 2008 11:55:59 +0200 |
Content-Type: | text/plain |
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Hi there
i want leaves with a constant, i.e:
public class Const extends GPNode
{
private int cValue;
public String toString() { return Integer.toString(this.cValue);}
public void checkConstraints(final EvolutionState state,
final int tree,
final GPIndividual typicalIndividual,
final Parameter individualBase)
{
super.checkConstraints(state,tree,typicalIndividual,individualBase);
if (children.length!=0)
state.output.error("Incorrect number of children for node " +
toStringForError() + " at " +
individualBase);
}
public void eval(final EvolutionState state,
final int thread,
final GPData input,
final ADFStack stack,
final GPIndividual individual,
final Problem problem)
{
DoubleData rd = ((DoubleData)(input));
this.cValue = ((int)(state.random[thread].nextDouble()*10));
rd.x = this.cValue;
}
}
assuming it creates a tree like (x+2) * 3, where 2 and 3 leaves were
produced by the class Const
assuming this tree is passed to the next generation, will it be the same
tree with the same constants (x+2) * 3, or will there be new constants
values i.e. (x+4) * 5?
kind regards
Peter
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