#region License Information
/* HeuristicLab
* Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.DataAnalysis;
using HeuristicLab.GP.Interfaces;
namespace HeuristicLab.GP.StructureIdentification {
public class VariableEvaluationImpactCalculator : HeuristicLab.Modeling.VariableEvaluationImpactCalculator {
public VariableEvaluationImpactCalculator()
: base() {
AddVariableInfo(new VariableInfo("TreeEvaluator", "The evaluator that should be used to evaluate the expression tree", typeof(ITreeEvaluator), VariableKind.In));
AddVariableInfo(new VariableInfo("FunctionTree", "The function tree that should be evaluated", typeof(IGeneticProgrammingModel), VariableKind.In));
AddVariableInfo(new VariableInfo("TreeSize", "Size (number of nodes) of the tree to evaluate", typeof(IntData), VariableKind.In));
AddVariableInfo(new VariableInfo("PunishmentFactor", "Punishment factor for invalid estimations", typeof(DoubleData), VariableKind.In));
}
protected override double[] GetOutputs(IScope scope, Dataset dataset, int targetVariable, int start, int end) {
ITreeEvaluator evaluator = GetVariableValue("TreeEvaluator", scope, true);
IGeneticProgrammingModel gpModel = GetVariableValue("FunctionTree", scope, true);
double punishmentFactor = GetVariableValue("PunishmentFactor", scope, true).Data;
evaluator.PrepareForEvaluation(dataset, targetVariable, start, end, punishmentFactor, gpModel.FunctionTree);
double[] result = new double[end - start];
for (int i = start; i < end; i++) {
result[i - start] = evaluator.Evaluate(i);
}
return result;
}
}
}