lenskit.data.matrix.CSRStructure

class lenskit.data.matrix.CSRStructure

Bases: NamedTuple

Representation of the compressed sparse row structure of a sparse matrix, without any data values.

Stability:

Caller (see Stability Levels).

rowptrs: numpy.ndarray

colinds: numpy.ndarray

shape: tuple[int, int]

property nrows

property ncols

property nnz

property row_nnzs: lenskit.data.types.NPVector[numpy.int32]

Array of row sizes (number of nonzeros in each row).

Return type:

lenskit.data.types.NPVector[numpy.int32]

extent(row)

Parameters:

row (int)

Return type:

tuple[int, int]

row_cs(row)

Parameters:

row (int)

Return type:

numpy.ndarray