public virtual void Create()
{
mOperator = mProgram.OperatorSet.FindRandomOperator();
double p_const = 0.5;
double r = Statistics.DistributionModel.GetUniform();
if (r < p_const)
{
mOperand1 = mProgram.ConstantSet.FindRandomRegister();
}
else
{
mOperand1 = mProgram.RegisterSet.FindRandomRegister();
}
if (mOperand1.IsConstant)
{
mOperand2 = mProgram.RegisterSet.FindRandomRegister();
}
else
{
r = Statistics.DistributionModel.GetUniform();
if (r < p_const)
{
mOperand2 = mProgram.ConstantSet.FindRandomRegister();
}
else
{
mOperand2 = mProgram.RegisterSet.FindRandomRegister();
}
}
mDestinationRegister = mProgram.RegisterSet.FindRandomRegister();
}
public LGPOperator FindRandomOperator(LGPOperator current_operator = null)
{
for (int attempts = 0; attempts < 10; attempts++)
{
double r = mWeightSum * Statistics.DistributionModel.GetUniform();
double current_sum = 0;
foreach (KeyValuePair <LGPOperator, double> point in mOperators)
{
current_sum += point.Value;
if (current_sum >= r)
{
if (point.Key != current_operator)
{
return(point.Key);
}
else
{
break;
}
}
}
}
return(current_operator);
}
public void Copy(LGPOperator rhs)
{
mOperatorIndex = rhs.mOperatorIndex;
mIsConditionalConstruct = rhs.mIsConditionalConstruct;
mSymbol = rhs.mSymbol;
}
public void AddOperator(LGPOperator op, double weight = 1)
{
mOperators.Add(new KeyValuePair <LGPOperator, double>(op, weight));
op.mOperatorIndex = mOperators.Count - 1;
mWeightSum += weight;
}
public virtual void MutateOperator()
{
mOperator = mProgram.OperatorSet.FindRandomOperator();
}
