Changeset 14675 for branches/OptimizationNetworks/HeuristicLab.Networks.IntegratedOptimization.MachineLearning/FeatureSelectionOrchestrator.cs

Timestamp:

02/16/17 12:15:11 (7 years ago)

Author:

mkommend

Message:

#2205: Worked on optimization networks for integrated machine learning.

File:

• branches/OptimizationNetworks/HeuristicLab.Networks.IntegratedOptimization.MachineLearning/FeatureSelectionOrchestrator.cs (modified) (2 diffs)

branches/OptimizationNetworks/HeuristicLab.Networks.IntegratedOptimization.MachineLearning/FeatureSelectionOrchestrator.cs

@@ -93 +93 @@
 
     private void FeatureSelectionEvaluationPort_MessageReceived(IMessage evaluationMessage, CancellationToken token) {
+      var problemData = (IRegressionProblemData)RegressionProblemData.Clone();
       var binaryVector = (BinaryVector)evaluationMessage["BinaryVector"];
-      var problemData = (IRegressionProblemData)RegressionProblemData.Clone();
+      binaryVector.ElementNames = problemData.InputVariables.CheckedItems.Select(variable => variable.Value.Value);
 
       var allowedVariables = problemData.InputVariables.CheckedItems.Zip(binaryVector,
         (variable, allowed) => new { VariableName = variable.Value, Allowed = allowed });
+
       foreach (var allowedVariable in allowedVariables)
         problemData.InputVariables.SetItemCheckedState(allowedVariable.VariableName, allowedVariable.Allowed);
@@ -113 +115 @@
 
       var regressionSolution = results.Select(r => r.Value).OfType<IRegressionSolution>().First();
+
+      UpdatedResults(binaryVector, regressionSolution);
+
+
       double quality = regressionSolution.TestMeanAbsoluteError;
       evaluationMessage["Quality"] = new DoubleValue(quality);
+    }
+
+    private void UpdatedResults(BinaryVector binaryVector, IRegressionSolution solution) {
+      if (!Results.ContainsKey("Best Solution Vector")) {
+        Results.Add(new Result("Best Solution Vector", typeof(BinaryVector)));
+        //Results.Add(new Result("Best Solution Variables", typeof(DoubleArray)));
+        Results.Add(new Result("Best Symbolic Solution", typeof(IRegressionSolution)));
+      }
+
+      var previousBestVector = (BinaryVector)Results["Best Solution Vector"].Value;
+
+      //check if better vector has been found
+      if (previousBestVector != null && binaryVector.SequenceEqual(previousBestVector))
+        return;
+
+      Results["Best Solution Vector"].Value = binaryVector;
+      Results["Best Symbolic Solution"].Value = solution;
+
+      //var variableNames = solution.ProblemData.AllowedInputVariables;
+      //alglib.linearmodel lm = BuildModel(best, problemData);
+
+      //double[] coefficients = null;
+      //int nFeatures = -1;
+      //alglib.lrunpack(lm, out coefficients, out nFeatures);
+
+      //var doubleArray = new DoubleArray(coefficients.ToArray());
+      //doubleArray.ElementNames = variableNames;
+      //Results["Best Solution Variables"].Value = doubleArray;
+
+
     }