Struct arrow::ipc::gen::SparseTensor::SparseTensorIndexCOO

pub struct SparseTensorIndexCOO<'a> {
    pub _tab: Table<'a>,
}

Fields

_tab: Table<'a>

Methods

impl<'a> SparseTensorIndexCOO<'a>

pub fn init_from_table(table: Table<'a>) -> Self

pub fn create<'bldr: 'args, 'args: 'mut_bldr, 'mut_bldr>(
    _fbb: &'mut_bldr mut FlatBufferBuilder<'bldr>,
    args: &'args SparseTensorIndexCOOArgs<'args>
) -> WIPOffset<SparseTensorIndexCOO<'bldr>>

pub const VT_INDICESBUFFER: VOffsetT

pub fn indicesBuffer(&self) -> Option<&'a Buffer>

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 this index matrix. The type of index value is long, so the stride for the index matrix is unnecessary.

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]]

Note that the indices are sorted in lexicographical order.

Trait Implementations

impl<'a> PartialEq<SparseTensorIndexCOO<'a>> for SparseTensorIndexCOO<'a>

fn eq(&self, other: &SparseTensorIndexCOO<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &SparseTensorIndexCOO<'a>) -> bool

This method tests for !=.

impl<'a> Clone for SparseTensorIndexCOO<'a>

fn clone(&self) -> SparseTensorIndexCOO<'a>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for SparseTensorIndexCOO<'a>

impl<'a> Debug for SparseTensorIndexCOO<'a>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<'a> Follow<'a> for SparseTensorIndexCOO<'a>

type Inner = SparseTensorIndexCOO<'a>

fn follow(buf: &'a [u8], loc: usize) -> Self::Inner