ccolamd_get_defaults¶

sksparse.ccolamd.ccolamd_get_defaults()[source]¶

Get the default knobs for CCOLAMD.

Returns:

knobs (dict) – A dictionary containing the default knobs for CCOLAMD.

The keys are:

’dense_row_thresh’: Threshold for considering a row/column dense. Rows with more than max(dense_row_thresh * sqrt(M), 16) entries are permuted to the end of the matrix.
’dense_col_thresh’: Like dense_row_thresh, but for columns.
’aggressive’: Default value for the aggressive knob.

Added in version 0.5.0.