Changeset 10109 for branches/HeuristicLab.Analysis.AlgorithmBehavior/AlgorithmBehaviorUnitTests/DistanceMatrixToPointsTest.cs

Timestamp:

11/05/13 23:57:18 (11 years ago)

Author:

ascheibe

Message:

#1886 fixed other MDS and added more unit tests

File:

• branches/HeuristicLab.Analysis.AlgorithmBehavior/AlgorithmBehaviorUnitTests/DistanceMatrixToPointsTest.cs (modified) (5 diffs)

branches/HeuristicLab.Analysis.AlgorithmBehavior/AlgorithmBehaviorUnitTests/DistanceMatrixToPointsTest.cs

@@ -23 +23 @@
 using HeuristicLab.Analysis.AlgorithmBehavior.Analyzers;
 using HeuristicLab.Common;
+using HeuristicLab.Encodings.PermutationEncoding;
+using HeuristicLab.Problems.TravelingSalesman;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
@@ -29 +31 @@
   public class DistanceMatrixToPointsTest {
     [TestMethod]
+    public void TestMetricMDSStatic() {
+      int nrOfPoints = 3;
+      int dim = 2;
+      double[][] orgPoints = new double[nrOfPoints][];
+      double[][] orgDm = new double[nrOfPoints][];
+      double[][] newDm = new double[nrOfPoints][];
+      double[][] newPoints = null;
+
+      AllocArray(orgPoints, dim);
+      AllocArray(orgDm, nrOfPoints);
+      AllocArray(newDm, nrOfPoints);
+      StaticPoints(orgPoints);
+      CalculateDistanceMatrix(orgDm, orgPoints);
+
+      newPoints = DistanceMatrixToPoints.MetricMDS(orgDm);
+
+      CalculateDistanceMatrix(newDm, newPoints);
+      Console.WriteLine("orgDm:");
+      PrintDM(orgDm);
+      Console.WriteLine("newDm:");
+      PrintDM(newDm);
+
+      for (int i = 0; i < orgDm.Length; i++) {
+        for (int j = 0; j < orgDm.Length; j++) {
+          double diff = orgDm[i][j] - newDm[i][j];
+          Assert.IsTrue(diff.IsAlmost(0.0));
+        }
+      }
+    }
+
+    [TestMethod]
+    public void TestMetricMDSRandom() {
+      int nrOfPoints = 30;
+      int dim = 10;
+      double[][] orgPoints = new double[nrOfPoints][];
+      double[][] orgDm = new double[nrOfPoints][];
+      double[][] newDm = new double[nrOfPoints][];
+      double[][] newPoints = null;
+
+      AllocArray(orgPoints, dim);
+      AllocArray(orgDm, nrOfPoints);
+      AllocArray(newDm, nrOfPoints);
+      SamplePoints(orgPoints);
+      CalculateDistanceMatrix(orgDm, orgPoints);
+
+      newPoints = DistanceMatrixToPoints.MetricMDS(orgDm, dim);
+
+      CalculateDistanceMatrix(newDm, newPoints);
+      Console.WriteLine("orgDm:");
+      PrintDM(orgDm);
+      Console.WriteLine("newDm:");
+      PrintDM(newDm);
+
+      for (int i = 0; i < orgDm.Length; i++) {
+        for (int j = 0; j < orgDm.Length; j++) {
+          double diff = orgDm[i][j] - newDm[i][j];
+          Assert.IsTrue(diff.IsAlmost(0.0));
+        }
+      }
+    }
+
+    [TestMethod]
     public void TestDistanceMatrixConversionStatic() {
       int nrOfPoints = 3;
@@ -40 +104 @@
       AllocArray(orgDm, nrOfPoints);
       AllocArray(newDm, nrOfPoints);
-      //SamplePoints(orgPoints);
       StaticPoints(orgPoints);
       CalculateDistanceMatrix(orgDm, orgPoints);
 
-      newPoints = DistanceMatrixToPoints.MetricMDS(orgDm);
+      newPoints = DistanceMatrixToPoints.ConvertDistanceMatrixToPoints(orgDm);
+
+      CalculateDistanceMatrix(newDm, newPoints);
+      Console.WriteLine("orgDm:");
+      PrintDM(orgDm);
+      Console.WriteLine("newDm:");
+      PrintDM(newDm);
+
+      for (int i = 0; i < orgDm.Length; i++) {
+        for (int j = 0; j < orgDm.Length; j++) {
+          double diff = orgDm[i][j] - newDm[i][j];
+          Assert.IsTrue(diff.IsAlmost(0.0));
+        }
+      }
+    }
+
+    [TestMethod]
+    public void TestDistanceMatrixConversionDynamic() {
+      int nrOfPoints = 30;
+      int dim = 20;
+      double[][] orgPoints = new double[nrOfPoints][];
+      double[][] orgDm = new double[nrOfPoints][];
+      double[][] newDm = new double[nrOfPoints][];
+      double[][] newPoints = null;
+
+      AllocArray(orgPoints, dim);
+      AllocArray(orgDm, nrOfPoints);
+      AllocArray(newDm, nrOfPoints);
+      SamplePoints(orgPoints);
+      CalculateDistanceMatrix(orgDm, orgPoints);
+
+      newPoints = DistanceMatrixToPoints.ConvertDistanceMatrixToPoints(orgDm, dim);
+
+      CalculateDistanceMatrix(newDm, newPoints);
+      Console.WriteLine("orgDm:");
+      PrintDM(orgDm);
+      Console.WriteLine("newDm:");
+      PrintDM(newDm);
+
+      for (int i = 0; i < orgDm.Length; i++) {
+        for (int j = 0; j < orgDm.Length; j++) {
+          double diff = orgDm[i][j] - newDm[i][j];
+          Assert.IsTrue(diff.IsAlmost(0.0));
+        }
+      }
+    }
+
+    [TestMethod]
+    public void TestMetricMDSForPermutations() {
+      int nrOfPoints = 30;
+      int dim = 20;
+      Permutation[] orgPoints = new Permutation[nrOfPoints];
+      double[][] orgDm;
+      double[][] newDm = new double[nrOfPoints][];
+      double[][] newPoints = null;
+
+      AllocArray(newDm, nrOfPoints);
+
+      SamplePermutations(orgPoints, dim);
+      orgDm = CalculateDistanceMatrixFromPermutations(orgPoints);
+
+      newPoints = DistanceMatrixToPoints.MetricMDS(orgDm, dim);
 
       CalculateDistanceMatrix(newDm, newPoints);
@@ -79 +203 @@
     }
 
+    private static void SamplePermutations(Permutation[] points, int dim) {
+      var rand = new HeuristicLab.Random.FastRandom();
+
+      for (int i = 0; i < points.Length; i++) {
+        var p = new Permutation(PermutationTypes.RelativeUndirected, dim, rand);
+        points[i] = p;
+      }
+    }
+
     private static void StaticPoints(double[][] points) {
       points[0][0] = 2;
@@ -98 +231 @@
     }
 
+    private static double[][] CalculateDistanceMatrixFromPermutations(Permutation[] points) {
+      double[][] tmpDm = new double[points.Length][];
+      AllocArray(tmpDm, points.Length);
+
+      for (int i = 0; i < points.Length; i++) {
+        for (int j = 0; j < points.Length; j++) {
+          double diversity = TSPSimilarityCalculator.CalculateSimilarity(points[i], points[j]);
+          tmpDm[i][j] = diversity;
+        }
+      }
+
+      return DistanceMatrixToPoints.TransformToDistances(tmpDm);
+    }
+
     private static void AllocArray(double[][] arr, int size) {
       for (int i = 0; i < arr.Length; i++) {