source: branches/LearningClassifierSystems/HeuristicLab.Encodings.ConditionActionEncoding/3.3/Operator/CalculateAccuracy.cs @ 10879

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2012 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 HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Operators;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;

namespace HeuristicLab.Encodings.ConditionActionEncoding {
  [Item("CalculateAccuracy", "")]
  [StorableClass]
  public class CalculateAccuracy : SingleSuccessorOperator {
    public ILookupParameter<PercentValue> AlphaParameter {
      get { return (ILookupParameter<PercentValue>)Parameters["Alpha"]; }
    }
    public ILookupParameter<DoubleValue> ErrorParameter {
      get { return (ILookupParameter<DoubleValue>)Parameters["Error"]; }
    }
    public ILookupParameter<DoubleValue> ErrorZeroParameter {
      get { return (ILookupParameter<DoubleValue>)Parameters["ErrorZero"]; }
    }
    public ILookupParameter<DoubleValue> PowerParameter {
      get { return (ILookupParameter<DoubleValue>)Parameters["v"]; }
    }
    public IValueLookupParameter<DoubleValue> AccuracyParameter {
      get { return (IValueLookupParameter<DoubleValue>)Parameters["Accuracy"]; }
    }

    private double Error {
      get { return ErrorParameter.ActualValue.Value; }
    }
    private double ErrorZero {
      get { return ErrorZeroParameter.ActualValue.Value; }
    }
    private double Alpha {
      get { return AlphaParameter.ActualValue.Value; }
    }
    private double Power {
      get { return PowerParameter.ActualValue.Value; }
    }

    [StorableConstructor]
    protected CalculateAccuracy(bool deserializing) : base(deserializing) { }
    protected CalculateAccuracy(CalculateAccuracy original, Cloner cloner)
      : base(original, cloner) {
    }
    public CalculateAccuracy()
      : base() {
      Parameters.Add(new LookupParameter<PercentValue>("Alpha"));
      Parameters.Add(new LookupParameter<DoubleValue>("Error"));
      Parameters.Add(new LookupParameter<DoubleValue>("ErrorZero"));
      Parameters.Add(new LookupParameter<DoubleValue>("v"));
      Parameters.Add(new ValueLookupParameter<DoubleValue>("Accuracy"));
    }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new CalculateAccuracy(this, cloner);
    }

    public override IOperation Apply() {
      if (Error < ErrorZero) {
        AccuracyParameter.ActualValue = new DoubleValue(1);
      } else {
        AccuracyParameter.ActualValue = new DoubleValue(Alpha * Math.Pow(Error / ErrorZero, -Power));
      }
      return base.Apply();
    }
  }
}