Changeset 11397 for branches/ProgrammableProblem/HeuristicLab.Problems.Programmable/3.3/SingleObjectiveProblemDefinitionScript.cs

Timestamp:

09/28/14 09:18:30 (10 years ago)

Author:

abeham

Message:

#2174:

• Renamed methods from e.g. Configuration.AddReal to Configuration.AddRealVector
• Introduced the variable store into the single-objective problem definition script
• Created a base class for problem definitions that are derived from in code
• Created a view for problem definition scripts that also includes the variable store
  • It looks like a C# script view, but unfortunately, the content types are not compatible

File:

• branches/ProgrammableProblem/HeuristicLab.Problems.Programmable/3.3/SingleObjectiveProblemDefinitionScript.cs (modified) (4 diffs)

branches/ProgrammableProblem/HeuristicLab.Problems.Programmable/3.3/SingleObjectiveProblemDefinitionScript.cs

@@ -60 +60 @@
 using HeuristicLab.Problems.Programmable;
 
-public class ProblemDefinition : ISingleObjectiveProblemDefinition {
-  public ProblemDefinition() {
-    // initialize private fields
+public class CustomProblemDefinition : ProblemDefinition, ISingleObjectiveProblemDefinition {
+  public bool IsMaximizationProblem { get { return false; } }
+
+  public override void Initialize() {
+    // when the definition is created here you can initialize variables in the variable store
   }
 
-  public bool IsMaximizationProblem { get { return false; } }
-
-  public Configuration GetConfiguration() {
+  public override Configuration GetConfiguration() {
     return new Configuration()
-      // .AddBinary(""b"", length: 5)
-      // .AddInteger(""i"", length: 5, min: 2, max: 14, step: 4)
-      // .AddReal(""r"", length: 5, min: -1.0, max: 1.0)
+      // .AddBinaryVector(""b"", length: 5)
+      // .AddIntegerVector(""i"", length: 5, min: 2, max: 14, step: 4)
+      // .AddRealVector(""r"", length: 5, min: -1.0, max: 1.0)
       // .AddPermutation(""P"", length: 5, type: PermutationTypes.Absolute)
     ;
@@ -78 +78 @@
   public double Evaluate(IRandom random, ParameterVector vector) {
     var quality = 0.0;
-    // quality = vector.Real(""r"").Sum(x => x * x);
+    // use vars.yourVariable to access variables in the variable store i.e. yourVariable
+    // quality = vector.RealVector(""r"").Sum(x => x * x);
     return quality;
   }
@@ -84 +85 @@
   public void Analyze(ParameterVector[] vectors, double[] qualities, ResultCollection results) {
     // write or update results given the range of vectors and resulting qualities
+    // use e.g. vars.yourVariable to access variables in the variable store i.e. yourVariable
   }
 
@@ -90 +92 @@
     // This method is only called from move-based algorithms (LocalSearch, SimulatedAnnealing, etc.)
     while (true) {
+      // this is not an infinite loop as only a finite amount of samples will be drawn
+      // it is possible to return a concrete amount of neighbors also
       var neighbor = (ParameterVector)vector.Clone();
       //e.g. make a bit flip in a binary parameter
-      //var bIndex = random.Next(neighbor.Binary(""b"").Length);
-      //neighbor.Binary(""b"")[bIndex] = !neighbor.Binary(""b"")[bIndex];
+      //var bIndex = random.Next(neighbor.BinaryVector(""b"").Length);
+      //neighbor.BinaryVector(""b"")[bIndex] = !neighbor.BinaryVector(""b"")[bIndex];
       yield return neighbor;
-      yield break;
     }
   }