coalesce¶

paddle.sparse. coalesce ( x, name=None ) [source]

the coalesced operator include sorted and merge, after coalesced, the indices of x is sorted and unique.

Parameters

• x (Tensor) – the input SparseCooTensor.

• name (str, optional) – Name for the operation (optional, default is None). For more information, please refer to Name.

Returns

return the SparseCooTensor after coalesced.

Return type

Tensor

Examples

import paddle

indices = [[0, 0, 1], [1, 1, 2]]
values = [1.0, 2.0, 3.0]
sp_x = paddle.sparse.sparse_coo_tensor(indices, values)
sp_x = paddle.sparse.coalesce(sp_x)
print(sp_x.indices())
#[[0, 1], [1, 2]]
print(sp_x.values())
#[3.0, 3.0]