Description Usage Arguments Details Value Communication Examples
Reciprocal condition number estimate.
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x |
A shaq. |
norm, triangular, ... |
Arguments passed to |
The estimate is computed by first forming the R matrix from a QR. Currently
this involves first computing a crossproduct, so the estimate can be thought
of as being fairly liberal. Afterwards, the condition number is estimated by
calling base::rcond()
on the local R matrix.
A number.
The operation is completely local except for forming the crossproduct, which
is an allreduce()
call, quadratic on the number of columns.
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