Package org.apache.sysds.runtime.data

Class Summary

Class	Description
BasicTensorBlock
DataTensorBlock
DenseBlock	This DenseBlock is an abstraction for different dense, row-major matrix formats.
DenseBlockBool
DenseBlockDRB
DenseBlockFactory
DenseBlockFP32
DenseBlockFP64
DenseBlockInt32
DenseBlockInt64
DenseBlockLBool
DenseBlockLDRB	Dense Large Row Blocks have multiple 1D arrays (blocks), which contain complete rows.
DenseBlockLFP32
DenseBlockLFP64
DenseBlockLInt32
DenseBlockLInt64
DenseBlockLString
DenseBlockString
IndexedTensorBlock
LibTensorAgg
LibTensorBincell
LibTensorReorg
SparseBlock	This SparseBlock is an abstraction for different sparse matrix formats.
SparseBlockCOO	SparseBlock implementation that realizes a traditional 'coordinate matrix' representation, where the entire sparse block is stored as triples in three arrays: row indexes, column indexes, and values, where row indexes and colunm indexes are sorted in order to allow binary search.
SparseBlockCSR	SparseBlock implementation that realizes a traditional 'compressed sparse row' representation, where the entire sparse block is stored as three arrays: ptr of length rlen+1 to store offsets per row, and indexes/values of length nnz to store column indexes and values of non-zero entries.
SparseBlockFactory
SparseBlockMCSR	SparseBlock implementation that realizes a 'modified compressed sparse row' representation, where each compressed row is stored as a separate SparseRow object which provides flexibility for unsorted row appends without the need for global reshifting of values/indexes but it incurs additional memory overhead per row for object/array headers per row which also slows down memory-bound operations due to higher memory bandwidth requirements.
SparseRow	Base class for sparse row implementations such as sparse row vectors and sparse scalars (single value per row).
SparseRowScalar
SparseRowVector
TensorBlock	A TensorBlock is the most top level representation of a tensor.
TensorIndexes	This represent the indexes to the blocks of the tensor.

Enum Summary

Enum	Description
DenseBlock.Type
SparseBlock.Type