source: trunk/sources/HeuristicLab.Modeling/3.2/VariableQualityImpactCalculator.cs @ 2053

#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 <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.DataAnalysis;
using System.Linq;

namespace HeuristicLab.Modeling {
  public abstract class VariableQualityImpactCalculator : VariableImpactCalculatorBase<double> {
    public override string Description {
      get { return @"Calculates the impact of all allowed input variables on the quality of the model using evaluator supplied as suboperator."; }
    }

    public override string OutputVariableName {
      get { return "VariableQualityImpacts"; }
    }

    protected override double CalculateImpact(double referenceValue, double newValue) {
      return newValue / referenceValue;
    }

    protected override double CalculateValue(IScope scope, Dataset dataset, int targetVariable, ItemList<IntData> allowedFeatures, int start, int end) {
      return CalculateQuality(scope, dataset, targetVariable, allowedFeatures, start, end);
    }

    protected abstract double CalculateQuality(IScope scope, Dataset dataset, int targetVariable, ItemList<IntData> allowedFeatures, int start, int end);
  }
}