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reduce_any_doc.yaml 2.83 KB
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reduce_any:
description: |
Reduces a dimension of a tensor by the "logical OR" of all elements in the dimension, by default. And also can
reduce a dimension of `x` along the `axis`. Determine whether the dimensions of the output and input are the
same by controlling `keep_dims`.
Note:
The `axis` with tensor type is only used for compatibility with older versions and is not recommended.
Args:
keep_dims (bool): If ``True`` , keep these reduced dimensions and the length is 1.
If ``False`` , don't keep these dimensions. Default: ``False`` .
Inputs:
- **x** (Tensor[bool]) - The input tensor. The dtype of the tensor to be reduced is bool.
- **axis** (Union[int, tuple(int), list(int), Tensor]) - The dimensions to reduce. Default: ``()`` ,
reduce all dimensions. Only constant value is allowed. Must be in the range [-rank(x), rank(x)).
Outputs:
Tensor, the dtype is bool.
- If `axis` is ``()`` , and `keep_dims` is ``False`` ,
the output is a 0-D tensor representing the "logical or" of all elements in the input tensor.
- If `axis` is int, set as 2, and `keep_dims` is ``False`` ,
the shape of output is :math:`(x_1, x_3, ..., x_R)`.
- If `axis` is tuple(int), set as (2, 3), and `keep_dims` is ``False`` ,
the shape of output is :math:`(x_1, x_4, ..., x_R)`.
- If `axis` is 1-D Tensor, set as [2, 3], and `keep_dims` is ``False`` ,
the shape of output is :math:`(x_1, x_4, ..., x_R)`.
Raises:
TypeError: If `keep_dims` is not a bool.
TypeError: If `x` is not a Tensor.
TypeError: If `axis` is not one of the following: int, tuple, list or Tensor.
Supported Platforms:
``Ascend`` ``GPU`` ``CPU``
Examples:
>>> import numpy as np
>>> from mindspore import Tensor, ops
>>> x = Tensor(np.array([[True, False], [True, True]]))
>>> op = ops.ReduceAny(keep_dims=True)
>>> # case 1: Reduces a dimension by the "logical OR" of all elements in the dimension.
>>> output = op(x)
>>> print(output)
[[ True]]
>>> print(output.shape)
(1, 1)
>>> # case 2: Reduces a dimension along axis 0.
>>> output = op(x, 0)
>>> print(output)
[[ True True]]
>>> # case 3: Reduces a dimension along axis 1.
>>> output = op(x, 1)
>>> print(output)
[[True]
[ True]]
>>> # case 4: input is a scalar.
>>> x = Tensor(True)
>>> op = ops.ReduceAny()
>>> output = op(x)
>>> print(output)
True
Python
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