Introduce BlockSparseMatrixData

A number of algorithms like the SchurEliminator do not need
access to the full BlockSparseMatrix interface. They only
need read only access to the values array and the block structure.

This change introduces, BlockSparseDataMatrix a struct that carries
these two bits of information and modifies the Schur type algorithms
to use it.

What this change will allow us to do, in a subsequent CL is to
take the values array of a BlockSparseMatrix and pair it with
a different blocks structure for subset preconditioning.

Change-Id: I1808f12531b586c9ff4d6a70b3d390c7b0d9f441
9 files changed
tree: 63032cdd3ccf82949bde0cac4673095954f0d612
  1. .clang-format
  2. .gitignore
  3. .travis.yml
  4. BUILD
  5. CMakeLists.txt
  10. bazel/
  11. cmake/
  12. config/
  13. data/
  14. docs/
  15. examples/
  16. include/
  17. internal/
  18. package.xml
  19. scripts/
  20. travis/

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Ceres Solver

Ceres Solver is an open source C++ library for modeling and solving large, complicated optimization problems. It is a feature rich, mature and performant library which has been used in production at Google since 2010. Ceres Solver can solve two kinds of problems.

  1. Non-linear Least Squares problems with bounds constraints.
  2. General unconstrained optimization problems.

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