These options are only effective in case the matrix to be decomposed is sparse, i.p.
of class dsCMatrix-class
.
chol_control(perm = NULL, super = NA, ordering = 0L, inplace = TRUE)
A list with specified options used for Cholesky decomposition.
logical scalar, see Cholesky
. If NULL
, the default,
the choice is left to a simple heuristic.
logical scalar, see Cholesky
.
an integer scalar passed to CHOLMOD routines determining which reordering schemes are tried to limit sparse Cholesky fill-in.
whether sparse Cholesky updates should re-use the same memory location.