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https://issues.apache.org/jira/browse/MATH-1622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17404809#comment-17404809
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Gilles Sadowski commented on MATH-1622:
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{quote}
* in some cases the number of function evaluations is way too large
{quote}
It seems that this was due to performing more than one additional search (and
summing the numbers of function evaluations used up by all of them); see commit
f58da4abf50d8ff627cc66dc89ece734ab98a0e5 ("master" branch).
> "SimplexOptimizer" hybridation with simulated annealing
> -------------------------------------------------------
>
> Key: MATH-1622
> URL: https://issues.apache.org/jira/browse/MATH-1622
> Project: Commons Math
> Issue Type: Wish
> Reporter: Gilles Sadowski
> Priority: Minor
> Fix For: 4.0
>
>
> It is proposed to modify the API of [simplex-based
> optimization|https://gitbox.apache.org/repos/asf?p=commons-math.git;a=blob;f=commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizer.java;h=d95123d8f62ec029f1bd0190ca3c17d028ee9a64;hb=46a0c3ae4140fd34cf8479362192bddb7b7b3e38]
> in order to allow the [simplex transformation
> rule|https://gitbox.apache.org/repos/asf?p=commons-math.git;a=blob;f=commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/Simplex.java;h=46345c3b7a5c6784a3afda33b490a1bd6a2ce1a3;hb=46a0c3ae4140fd34cf8479362192bddb7b7b3e38#l299]
> to retain less fit states with some probability, as per the "simulated
> annealing" heuristics.
> A {{SimulatedAnnealing}} class will implement
> [{{OptimizationData}}|https://gitbox.apache.org/repos/asf?p=commons-math.git;a=blob;f=commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/OptimizationData.java;h=adb42ee040852971594520777ece3391e19052a8;hb=46a0c3ae4140fd34cf8479362192bddb7b7b3e38].
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