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From "Gilles (JIRA)" <j...@apache.org>
Subject [jira] Created: (MATH-376) One-time initialization in "DirectSearchOptimizer"
Date Tue, 15 Jun 2010 12:03:23 GMT
One-time initialization in "DirectSearchOptimizer"
--------------------------------------------------

                 Key: MATH-376
                 URL: https://issues.apache.org/jira/browse/MATH-376
             Project: Commons Math
          Issue Type: Bug
            Reporter: Gilles
            Priority: Minor


In class  "DirectSearchOptimizer" (in package "optimization.direct"), the "optimize" method
contains this code (at line 270):
{code}
if (startConfiguration == null) {
    // no initial configuration has been set up for simplex
    // build a default one from a unit hypercube
    final double[] unit = new double[startPoint.length];
    Arrays.fill(unit, 1.0);
    setStartConfiguration(unit);
}
{code}

I think that this has the consequence that it is impossible to call "optimize" a second time,
where one would like to solve a problem with a different dimension.

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