mindspore.ops.UnsortedSegmentMin

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class mindspore.ops.UnsortedSegmentMin[source]

Computes the minimum of a tensor along segments.

Refer to mindspore.ops.unsorted_segment_min() for more details.

Inputs:

  • input_x (Tensor) - The shape is \((x_1, x_2, ..., x_R)\). The data type must be float16, float32 or int32.

  • segment_ids (Tensor) - The label indicates the segment to which each element belongs. Set the shape as \((x_1, x_2, ..., x_N)\), where 0 < N <= R.

  • num_segments (Union[int, Tensor]) - Set \(z\) as num_segments, it can be an int or 0-D Tensor.

Outputs:

Tensor, the shape is \((z, x_{N+1}, ..., x_R)\).

Supported Platforms:

Ascend GPU CPU

Examples

>>> from mindspore import Tensor
>>> from mindspore import ops
>>> import numpy as np
>>> input_x = Tensor(np.array([[1, 2, 3], [4, 5, 6], [4, 2, 1]]).astype(np.float32))
>>> segment_ids = Tensor(np.array([0, 1, 1]).astype(np.int32))
>>> num_segments = 2
>>> unsorted_segment_min = ops.UnsortedSegmentMin()
>>> output = unsorted_segment_min(input_x, segment_ids, num_segments)
>>> print(output)
[[1. 2. 3.]
 [4. 2. 1.]]