#region License Information
/* HeuristicLab
* Copyright (C) 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 System;
using System.Collections.Generic;
using System.Linq;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
using HEAL.Attic;
namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
[StorableType("511B0319-0180-4C2E-81AD-3A8936BE4DE8")]
[Item("FactorVariable", "Represents a categorical variable (comparable to factors as in R).")]
public sealed class FactorVariable : VariableBase {
private readonly Dictionary> variableValues; // for each variable value also store a zero-based index
[Storable]
public IEnumerable>> VariableValues {
get { return variableValues; }
set {
if(value == null) throw new ArgumentNullException();
variableValues.Clear();
foreach(var kvp in value) {
variableValues.Add(kvp.Key, new Dictionary(kvp.Value));
}
}
}
[StorableConstructor]
private FactorVariable(StorableConstructorFlag _) : base(_) {
variableValues = new Dictionary>();
}
private FactorVariable(FactorVariable original, Cloner cloner)
: base(original, cloner) {
variableValues =
original.variableValues.ToDictionary(kvp => kvp.Key, kvp => new Dictionary(kvp.Value));
}
public FactorVariable() : this("FactorVariable", "Represents a categorical variable (comparable to factors as in R).") { }
public FactorVariable(string name, string description)
: base(name, description) {
variableValues = new Dictionary>();
}
public override ISymbolicExpressionTreeNode CreateTreeNode() {
return new FactorVariableTreeNode(this);
}
public override IDeepCloneable Clone(Cloner cloner) {
return new FactorVariable(this, cloner);
}
public IEnumerable GetVariableValues(string variableName) {
return variableValues[variableName].Keys;
}
public int GetIndexForValue(string variableName, string variableValue) {
return variableValues[variableName][variableValue];
}
}
}