[MATH-911] Remove usage of "DerivativeStructure" in the "optimization" package

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Fix Version/s: 3.1
• Assignee: Unassigned
• Reporter: Gilles Sadowski
• Created: 03/Dec/12 10:41
• Updated: 04/Mar/13 18:53
• Resolved: 13/Dec/12 01:01

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.

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

Issue Links

• blocks: MATH-874 New API for optimizers