Changeset 17317 for branches/2521_ProblemRefactoring/HeuristicLab.Optimization/3.3/BasicProblems/MultiObjectiveProblem.cs

Timestamp:

10/04/19 16:03:51 (5 years ago)

Author:

abeham

Message:

#2521: refactored multi-objective problems' maximization

• Add ForceValue method to IValueParameter to perform changes even when it is read-only
• Add MaximizationChanged event handler

File:

• branches/2521_ProblemRefactoring/HeuristicLab.Optimization/3.3/BasicProblems/MultiObjectiveProblem.cs (modified) (8 diffs)

branches/2521_ProblemRefactoring/HeuristicLab.Optimization/3.3/BasicProblems/MultiObjectiveProblem.cs

@@ -20 +20 @@
 #endregion
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -37 +38 @@
     where TEncodedSolution : class, IEncodedSolution {
     #region Parameternames
-    public const string MaximizationParameterName = "Maximization";
     public const string BestKnownFrontParameterName = "BestKnownFront";
     public const string ReferencePointParameterName = "ReferencePoint";
@@ -43 +43 @@
 
     #region Parameterproperties
-    public IValueParameter<BoolArray> MaximizationParameter {
-      get { return (IValueParameter<BoolArray>)Parameters[MaximizationParameterName]; }
-    }
+    [Storable] public IValueParameter<BoolArray> MaximizationParameter { get; }
     public IValueParameter<DoubleMatrix> BestKnownFrontParameter {
       get { return (IValueParameter<DoubleMatrix>)Parameters[BestKnownFrontParameterName]; }
@@ -60 +58 @@
     protected MultiObjectiveProblem(MultiObjectiveProblem<TEncoding, TEncodedSolution> original, Cloner cloner)
       : base(original, cloner) {
+      MaximizationParameter = cloner.Clone(original.MaximizationParameter);
       ParameterizeOperators();
     }
 
     protected MultiObjectiveProblem() : base() {
-      Parameters.Add(new ValueParameter<BoolArray>(MaximizationParameterName, "Set to false if the problem should be minimized.", (BoolArray)new BoolArray(Maximization).AsReadOnly()));
+      MaximizationParameter = new ValueParameter<BoolArray>("Maximization", "The dimensions correspond to the different objectives: False if the objective should be minimized, true if it should be maximized..", new BoolArray(new bool[] { }, @readonly: true));
+      Parameters.Add(MaximizationParameter);
       Parameters.Add(new OptionalValueParameter<DoubleMatrix>(BestKnownFrontParameterName, "A double matrix representing the best known qualites for this problem (aka points on the Pareto front). Points are to be given in a row-wise fashion."));
       Parameters.Add(new OptionalValueParameter<DoubleArray>(ReferencePointParameterName, "The refrence point for hypervolume calculations on this problem"));
@@ -73 +73 @@
 
     protected MultiObjectiveProblem(TEncoding encoding) : base(encoding) {
-      Parameters.Add(new ValueParameter<BoolArray>(MaximizationParameterName, "Set to false if the problem should be minimized.", (BoolArray)new BoolArray(Maximization).AsReadOnly()));
+      MaximizationParameter = new ValueParameter<BoolArray>("Maximization", "The dimensions correspond to the different objectives: False if the objective should be minimized, true if it should be maximized..", new BoolArray(new bool[] { }, @readonly: true));
+      Parameters.Add(MaximizationParameter);
       Parameters.Add(new OptionalValueParameter<DoubleMatrix>(BestKnownFrontParameterName, "A double matrix representing the best known qualites for this problem (aka points on the Pareto front). Points are to be given in a row-wise fashion."));
       Parameters.Add(new OptionalValueParameter<DoubleArray>(ReferencePointParameterName, "The refrence point for hypervolume calculations on this problem"));
@@ -89 +90 @@
       get { return Maximization.Length; }
     }
-    public abstract bool[] Maximization { get; }
+    public bool[] Maximization {
+      get { return MaximizationParameter.Value.CloneAsArray(); }
+      protected set {
+        if (MaximizationParameter.Value.SequenceEqual(value)) return;
+        MaximizationParameter.ForceValue(new BoolArray(value, @readonly: true));
+        OnMaximizationChanged();
+      }
+    }
 
     public virtual IReadOnlyList<double[]> BestKnownFront {
@@ -168 +176 @@
     #region IMultiObjectiveHeuristicOptimizationProblem Members
     IParameter IMultiObjectiveHeuristicOptimizationProblem.MaximizationParameter {
-      get { return Parameters[MaximizationParameterName]; }
+      get { return MaximizationParameter; }
     }
     IMultiObjectiveEvaluator IMultiObjectiveHeuristicOptimizationProblem.Evaluator {
@@ -174 +182 @@
     }
     #endregion
+
+    public event EventHandler MaximizationChanged;
+    protected void OnMaximizationChanged() {
+      MaximizationChanged?.Invoke(this, EventArgs.Empty);
+    }
   }
 }