Simplify "DirectSearchOptimizer"
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Key: MATH-428
URL: https://issues.apache.org/jira/browse/MATH-428
Project: Commons Math
Issue Type: Improvement
Reporter: Gilles
Assignee: Gilles
Priority: Minor
Fix For: 3.0
This issue refers to classes in package {{optimization.direct}}.
Currently the class {{NelderMead}} inherits from {{DirectSearchOptimizer}}.
However the method {{doOptimize}} is implemented in {{DirectSearchOptimizer}}.
This is backwards from the intended design (where an "optimizer" is defined as
a class that implements a specific algorithm within {{doOptimize}}). According
to this "terminology", {{DirectSearchOptimizer}} is the optimizer whereas
{{NelderMead}} could be considered as a specific way to construct a simplex.
Indeed, that's what seems intended since it overrides the abstract method
{{iterateSimplex}}.
I suggest to create 2 classes that will make it clear the separation between
the "optimizer" and the "simplex manager".
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