Sparse Matrix Containers

BCOO(rows, cols, data[, bshape, dtype, ...])	A sparse matrix container in COOrdinate format.
BCSR(rowptr, cols, data[, bshape, dtype, ...])	A sparse matrix in Compressed Sparse Row format.
BDIA(offsets, data[, bshape, dtype, sizes, ...])	A sparse matrix in DIAgonal format.