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  1. Commons Math
  2. MATH-911

Remove usage of "DerivativeStructure" in the "optimization" package

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    • Type: Task
    • Status: Closed
    • Priority: Minor
    • Resolution: Won't Fix
    • Affects Version/s: None
    • Fix Version/s: 3.1
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      Description

      The "DerivativeStructure" class is not the proper interface towards user applications that deal with optimization problems.

      Recent changes implies copying between e.g. the user's representation of a Jacobian and the "DerviativeStructure" representation of the same data. And, actually, the current implementation of "AbstractLeastSquaresOptimizer" copies back the "DerviativeStructure" representation into a "double[][]" for internal use.

      Konstantin Berlin pointed out the potential storage inefficiencies in large-scale problems.

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              • Assignee:
                Unassigned
                Reporter:
                erans Gilles Sadowski
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