Lines Matching refs:preconditioner

647 more powerful preconditioner. In fact, we do not even need to compute
660 .. _section-preconditioner:
675 preconditioner :math:`M` the preconditioned system is given by
681 The computational cost of using a preconditioner :math:`M` is the cost
687 preconditioner would be one for which :math:`\kappa(M^{-1}A)
689 applying this preconditioner would require solving a linear system
694 Jacobi preconditioner, but are also much more expensive.
698 preconditioner, i.e., :math:`M=\operatorname{diag}(A)`, which for
700 block Jacobi preconditioner.
705 block Jacobi preconditioner for :math:`S`. Ceres's implements both of
1170    The preconditioner used by the iterative linear solver. The default
1171    is the block Jacobi preconditioner. Valid values are (in increasing
1174    :ref:`section-preconditioner` for more details.
1181    based preconditioner. The original visibility based preconditioning
2100    Type of preconditioner used for solving the trust region step. Only