Document feedback

Question document fragment

When a question document fragment contains a formula, it is displayed as a space.

Submission type
issue

It's a little complicated...

I'd like to ask someone.

Please select the submission type

Problem type
Specifications and Common Mistakes

- Specifications and Common Mistakes:

- Misspellings or punctuation mistakes,incorrect formulas, abnormal display.

- Incorrect links, empty cells, or wrong formats.

- Chinese characters in English context.

- Minor inconsistencies between the UI and descriptions.

- Low writing fluency that does not affect understanding.

- Incorrect version numbers, including software package names and version numbers on the UI.

Usability

- Usability:

- Incorrect or missing key steps.

- Missing main function descriptions, keyword explanation, necessary prerequisites, or precautions.

- Ambiguous descriptions, unclear reference, or contradictory context.

- Unclear logic, such as missing classifications, items, and steps.

Correctness

- Correctness:

- Technical principles, function descriptions, supported platforms, parameter types, or exceptions inconsistent with that of software implementation.

- Incorrect schematic or architecture diagrams.

- Incorrect commands or command parameters.

- Incorrect code.

- Commands inconsistent with the functions.

- Wrong screenshots.

- Sample code running error, or running results inconsistent with the expectation.

Risk Warnings

- Risk Warnings:

- Lack of risk warnings for operations that may damage the system or important data.

Content Compliance

- Content Compliance:

- Contents that may violate applicable laws and regulations or geo-cultural context-sensitive words and expressions.

- Copyright infringement.

Please select the type of question

Problem description

Describe the bug so that we can quickly locate the problem.

mindspore.ops.MatrixPower

class mindspore.ops.MatrixPower(n)[source]

Computes the n-th power of a batch of square matrices. If n = 0, it returns a batch of identity matrices. If n is negative, it returns the inverse of each matrix (if invertible) raised to the power of abs(n).

Parameters

n (int) – The exponent, a required int.

Inputs:

  • x (Tensor) - A 3-D Tensor. Supported data types are float16 and float32. The shape is (b,m,m), represents b m-D square matrices.

Outputs:

  • y (Tensor) - A 3-D Tensor. Data type and shape are the same as x’s.

Raises

  • TypeError – If the data type of n is not int.

  • TypeError – If the data type of x is neither float32 nor float16.

  • TypeError – If x is not a Tensor.

  • ValueError – If x is not a 3-D tensor.

  • ValueError – If shape[1] and shape[2] of x are not the same.

  • ValueError – If n is negative but got input x has singular matrices.

Supported Platforms:

Ascend CPU

Examples

>>> x = Tensor([[[0, 1], [-1, 0]], [[1, 0], [0, -1]]], dtype=ms.float32)
>>> matrix_power = ops.MatrixPower(n=2)
>>> y = matrix_power(x)
>>> print(y)
[[[-1.  0.]
  [-0. -1.]]
 [[ 1.  0.]
  [ 0.  1.]]]