Changeset 14667 for branches/PerformanceComparison/HeuristicLab.OptimizationExpertSystem.Common/3.3/KnowledgeCenter.cs

Timestamp:

02/11/17 01:07:19 (7 years ago)

Author:

abeham

Message:

#2457: added TSNE visualization of problem instance map

File:

• branches/PerformanceComparison/HeuristicLab.OptimizationExpertSystem.Common/3.3/KnowledgeCenter.cs (modified) (3 diffs)

branches/PerformanceComparison/HeuristicLab.OptimizationExpertSystem.Common/3.3/KnowledgeCenter.cs

@@ -39 +39 @@
 using System.Threading;
 using System.Threading.Tasks;
+using HeuristicLab.Algorithms.DataAnalysis;
 using Algorithm = HeuristicLab.Clients.OKB.Administration.Algorithm;
 using Problem = HeuristicLab.Clients.OKB.Administration.Problem;
@@ -237 +238 @@
       var somCoords = SOM.Map(features, new MersenneTwister(42), somSize: 10, learningRadius: 20, iterations: 200, jittering: true);
       #endregion
+      #region TSNE
+      var tsneFeatures = new DoubleArray[instances.Count];
+      foreach (var instance in instances) {
+        tsneFeatures[key2Idx.GetByFirst(instance.Key)] = new DoubleArray(instance.Value);
+      }
+      var tsneCoords = TSNE<DoubleArray>.Run(tsneFeatures, 2, Math.Min((instances.Count - 1) / 3, 50), 0.1, (a, b) => Math.Sqrt(a.Zip(b, (c, d) => (c - d) * (c - d)).Sum()), new FastRandom(42));
+      #endregion
 
       ProblemInstances.UpdateOfRunsInProgress = true;
@@ -273 +281 @@
             ((DoubleValue)item).Value = somCoords[key2Idx.GetByFirst(instance), 1];
           } else instance.Results.Add("Projection.SOM.Y", new DoubleValue(somCoords[key2Idx.GetByFirst(instance), 1]));
+
+          if (instance.Results.TryGetValue("Projection.TSNE.X", out item)) {
+            ((DoubleValue)item).Value = tsneCoords[key2Idx.GetByFirst(instance), 0];
+          } else instance.Results.Add("Projection.TSNE.X", new DoubleValue(tsneCoords[key2Idx.GetByFirst(instance), 0]));
+          if (instance.Results.TryGetValue("Projection.TSNE.Y", out item)) {
+            ((DoubleValue)item).Value = tsneCoords[key2Idx.GetByFirst(instance), 1];
+          } else instance.Results.Add("Projection.TSNE.Y", new DoubleValue(tsneCoords[key2Idx.GetByFirst(instance), 1]));
         }
       } finally { ProblemInstances.UpdateOfRunsInProgress = false; }