public virtual ISolution Clone()
{
TGPSolution clone = new TGPSolution(mPop, mTrees.Count);
clone.Copy(this);
return(clone);
}
public bool IsBetterThan(TGPSolution rhs)
{
if (mFitness > rhs.Fitness)
{
return(true);
}
else if (mFitness == rhs.Fitness)
{
int this_better_count = 0;
for (int i = 0; i < mTrees.Count; ++i)
{
if (mTrees[i].IsBetterThan(rhs.mTrees[i]))
{
this_better_count++;
}
}
if (this_better_count * 2 > mTrees.Count)
{
return(true);
}
return(false);
}
else
{
return(false);
}
}
protected virtual void Copy(TGPSolution rhs)
{
mFitness = rhs.mFitness;
mIsFitnessValid = rhs.mIsFitnessValid;
mObjectiveValue = rhs.mObjectiveValue;
mTrees.Clear();
for (int i = 0; i < rhs.mTrees.Count; ++i)
{
mTrees.Add(rhs.mTrees[i].Clone());
}
foreach (string attrname in rhs.mAttributes.Keys)
{
mAttributes[attrname] = rhs.mAttributes[attrname];
}
}
public int Compare(TGPSolution rhs)
{
return(mFitness.CompareTo(rhs.mFitness));
//if (mFitness > rhs.mFitness)
//{
// return 1;
//}
//else if (mFitness == rhs.mFitness)
//{
// return 0;
//}
//else
//{
// return -1;
//}
}
public void SubtreeCrossover(IGPSolution _rhs, int iMaxDepthForCrossOver, string method, object tag = null)
{
TGPSolution rhs = (TGPSolution)_rhs;
int tree_count = mTrees.Count;
for (int i = 0; i < tree_count; ++i)
{
if (tree_count > 1 && DistributionModel.GetUniform() < 0.5)
{
TGPProgram temp = rhs.mTrees[i];
rhs.mTrees[i] = mTrees[i];
mTrees[i] = temp;
}
else
{
mTrees[i].SubtreeCrossover(rhs.mTrees[i], iMaxDepthForCrossOver, method, tag);
}
}
TrashFitness();
rhs.TrashFitness();
}
