mindspore.ops.masked_select

mindspore.ops.masked_select(input, mask)[source]

Returns a new 1-D Tensor which indexes the x tensor according to the boolean mask. The shapes of the mask tensor and the x tensor don’t need to match, but they must be broadcastable.

Parameters

  • input (Tensor) – The shape of tensor is \((x_1, x_2, ..., x_R)\).

  • mask (Tensor[bool]) – The shape of tensor is \((x_1, x_2, ..., x_R)\).

Returns

A 1-D Tensor, with the same type as input.

Raises

  • TypeError – If input or mask is not a Tensor.

  • TypeError – If dtype of mask is not bool.

Supported Platforms:

Ascend GPU CPU

Examples

>>> import numpy as np
>>> import mindspore.ops as ops
>>> from mindspore import Tensor
>>> x = Tensor(np.array([1, 2, 3, 4]), mindspore.int64)
>>> mask = Tensor(np.array([1, 0, 1, 0]), mindspore.bool_)
>>> output = ops.masked_select(x, mask)
>>> print(output)
[1 3]