Changeset 14776 for branches/PerformanceComparison/ProblemInstanceIdentifier/InstanceExplorer.cs

Timestamp:

03/22/17 16:52:36 (8 years ago)

Author:

abeham

Message:

#2457: working on MemPR integration

File:

• branches/PerformanceComparison/ProblemInstanceIdentifier/InstanceExplorer.cs (modified) (1 diff)

branches/PerformanceComparison/ProblemInstanceIdentifier/InstanceExplorer.cs

@@ -74 +74 @@
   }
 
+  public class AdaptiveWalkExplorer : InstanceExplorer {
+    public int Iterations { get; set; }
+
+    public override string Name { get { return "Adaptive-Walk Explorer"; } }
+    public override int Effort { get { return Iterations; } }
+
+    public AdaptiveWalkExplorer() {
+
+    }
+
+    public override InstanceDescriptor Explore(QuadraticAssignmentProblem problem, int? seed = null) {
+      var walk = new AdaptiveWalk() {
+        SeedParameter = { Value = { Value = seed ?? 0 } },
+        SetSeedRandomlyParameter = { Value = { Value = seed.HasValue } },
+        MaximumIterationsParameter = { Value = { Value = Iterations } },
+        RepetitionsParameter = { Value = { Value = 1 } }
+      };
+      walk.Problem = problem;
+      walk.Engine = new SequentialEngine();
+      walk.MutatorParameter.Value = walk.MutatorParameter.ValidValues.First(x => x is Swap2Manipulator);
+      var calculator = new AdaptiveWalkCalculator(walk) { Problem = problem };
+      var features = calculator.Calculate().ToDictionary(x => x.Name, x => x.Value);
+
+      return new InstanceDescriptor(problem.Name, InstanceDescriptor.GetClass(problem.Name), problem.Weights.Rows,
+        features.Keys.ToArray(), features.Values.Select(x => ((DoubleValue)x).Value).ToArray());
+    }
+  }
+
   public class MemPRExplorer : InstanceExplorer {
     public int Seconds { get; set; }