Struct arrow::ipc::gen::SparseTensor::SparseTensorIndexCOO [−][src]
pub struct SparseTensorIndexCOO<'a> {
pub _tab: Table<'a>,
}
Expand description
EXPERIMENTAL: Data structures for sparse tensors Coordinate (COO) format of sparse tensor index.
COO’s index list are represented as a NxM matrix, where N is the number of non-zero values, and M is the number of dimensions of a sparse tensor.
indicesBuffer stores the location and size of the data of this indices matrix. The value type and the stride of the indices matrix is specified in indicesType and indicesStrides fields.
For example, let X be a 2x3x4x5 tensor, and it has the following 6 non-zero values:
X[0, 1, 2, 0] := 1
X[1, 1, 2, 3] := 2
X[0, 2, 1, 0] := 3
X[0, 1, 3, 0] := 4
X[0, 1, 2, 1] := 5
X[1, 2, 0, 4] := 6
In COO format, the index matrix of X is the following 4x6 matrix:
[[0, 0, 0, 0, 1, 1],
[1, 1, 1, 2, 1, 2],
[2, 2, 3, 1, 2, 0],
[0, 1, 0, 0, 3, 4]]
When isCanonical is true, the indices is sorted in lexicographical order (row-major order), and it does not have duplicated entries. Otherwise, the indices may not be sorted, or may have duplicated entries.
Fields
_tab: Table<'a>
Implementations
pub fn create<'bldr: 'args, 'args: 'mut_bldr, 'mut_bldr>(
_fbb: &'mut_bldr mut FlatBufferBuilder<'bldr>,
args: &'args SparseTensorIndexCOOArgs<'args>
) -> WIPOffset<SparseTensorIndexCOO<'bldr>>
The type of values in indicesBuffer
Non-negative byte offsets to advance one value cell along each dimension If omitted, default to row-major order (C-like).
The location and size of the indices matrix’s data
This flag is true if and only if the indices matrix is sorted in row-major order, and does not have duplicated entries. This sort order is the same as of Tensorflow’s SparseTensor, but it is inverse order of SciPy’s canonical coo_matrix (SciPy employs column-major order for its coo_matrix).
Trait Implementations
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
Runs the verifier for this type, assuming its at position pos
in the verifier’s buffer.
Should not need to be called directly. Read more
Auto Trait Implementations
impl<'a> RefUnwindSafe for SparseTensorIndexCOO<'a>
impl<'a> Send for SparseTensorIndexCOO<'a>
impl<'a> Sync for SparseTensorIndexCOO<'a>
impl<'a> Unpin for SparseTensorIndexCOO<'a>
impl<'a> UnwindSafe for SparseTensorIndexCOO<'a>
Blanket Implementations
Mutably borrows from an owned value. Read more