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Changeset 6376


Ignore:
Timestamp:
06/07/11 12:39:37 (13 years ago)
Author:
mkommend
Message:

#1478: Changed stopping criterion of constant optimizer.

Location:
trunk/sources
Files:
2 edited

Legend:

Unmodified
Added
Removed

  • trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression.Views/3.4/InteractiveSymbolicRegressionSolutionSimplifierView.cs

    r6256 r6376  
    122122
    123123    protected override void btnOptimizeConstants_Click(object sender, EventArgs e) {
    124       SymbolicRegressionConstantOptimizationEvaluator.OptimizeConstants(Content.Model.Interpreter, Content.Model.SymbolicExpressionTree, Content.ProblemData, Content.ProblemData.TrainingIndizes, 0, 10);
     124      SymbolicRegressionConstantOptimizationEvaluator.OptimizeConstants(Content.Model.Interpreter, Content.Model.SymbolicExpressionTree, Content.ProblemData, Content.ProblemData.TrainingIndizes, 0.001, 0, 0.0001);
    125125      UpdateModel(Content.Model.SymbolicExpressionTree);
    126126    }

  • trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SingleObjective/SymbolicRegressionConstantOptimizationEvaluator.cs

    r6256 r6376  
    106106        IEnumerable<int> constantOptimizationRows = GenerateRowsToEvaluate(ConstantOptimizationRowsPercentage.Value);
    107107        quality = OptimizeConstants(SymbolicDataAnalysisTreeInterpreterParameter.ActualValue, solution, ProblemDataParameter.ActualValue,
    108            constantOptimizationRows, ConstantOptimizationImprovement.Value, ConstantOptimizationIterations.Value,
     108           constantOptimizationRows, ConstantOptimizationImprovement.Value, ConstantOptimizationIterations.Value, 0.001,
    109109           EstimationLimitsParameter.ActualValue.Upper, EstimationLimitsParameter.ActualValue.Lower,
    110110          EvaluatedTreesParameter.ActualValue, EvaluatedTreeNodesParameter.ActualValue);
    … …  
    155155
    156156    public static double OptimizeConstants(ISymbolicDataAnalysisExpressionTreeInterpreter interpreter, ISymbolicExpressionTree tree, IRegressionProblemData problemData,
    157       IEnumerable<int> rows, double improvement, int iterations, double upperEstimationLimit = double.MaxValue, double lowerEstimationLimit = double.MinValue, IntValue evaluatedTrees = null, IntValue evaluatedTreeNodes = null) {
     157      IEnumerable<int> rows, double improvement, int iterations, double differentialStep, double upperEstimationLimit = double.MaxValue, double lowerEstimationLimit = double.MinValue, IntValue evaluatedTrees = null, IntValue evaluatedTreeNodes = null) {
    158158      List<SymbolicExpressionTreeTerminalNode> terminalNodes = tree.Root.IterateNodesPrefix().OfType<SymbolicExpressionTreeTerminalNode>().ToList();
    159159      double[] c = new double[terminalNodes.Count];
    … …  
    172172      double epsx = 0;
    173173      int maxits = iterations;
    174       double diffstep = 0.01;
     174      double diffstep = differentialStep;
    175175
    176176      alglib.minlmstate state;
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