Lines Matching full:preconditioner
629 more powerful preconditioner. In fact, we do not even need to compute
642 .. _section-preconditioner:
644 Preconditioner
657 preconditioner :math:`M` the preconditioned system is given by
663 The computational cost of using a preconditioner :math:`M` is the cost
669 preconditioner would be one for which :math:`\kappa(M^{-1}A)
671 applying this preconditioner would require solving a linear system
676 Jacobi preconditioner, but are also much more expensive.
680 preconditioner, i.e., :math:`M=\operatorname{diag}(A)`, which for
682 block Jacobi preconditioner.
687 block Jacobi preconditioner for :math:`S`. Ceres's implements both of
1144 The preconditioner used by the iterative linear solver. The default
1145 is the block Jacobi preconditioner. Valid values are (in increasing
1148 :ref:`section-preconditioner` for more details.
