mindspore.Tensor.argmax_with_value

mindspore.Tensor.argmax_with_value(axis=0, keep_dims=False)

返回tensor在指定轴上的最大值及其索引。

参数：

• axis (Union[int, None], 可选) - 指定计算轴。如果为 None ，计算tensor中的所有元素。默认 0 。

• keep_dims (bool, 可选) - 输出tensor是否保留维度。默认 False 。

返回：

两个tensor组成的tuple(max, max_indices)。

支持平台：

Ascend GPU CPU

样例：

>>> import mindspore
>>> x = mindspore.tensor([[9, 3, 4, 5],
...                       [5, 2, 7, 4],
...                       [8, 1, 3, 6]])
>>> # case 1: By default, compute the maximum along axis 0.
>>> x.argmax_with_value()
(Tensor(shape=[4], dtype=Int64, value= [9, 3, 7, 6]),
 Tensor(shape=[4], dtype=Int64, value= [0, 0, 1, 2]))
>>>
>>> # case 2: Compute the maximum along axis 1.
>>> x.argmax_with_value(axis=1)
(Tensor(shape=[3], dtype=Int64, value= [9, 7, 8]),
 Tensor(shape=[3], dtype=Int64, value= [0, 2, 0]))
>>>
>>> # case 3: If keep_dims=True, the output shape will be same of that of the input.
>>> x.argmax_with_value(axis=1, keep_dims=True)
(Tensor(shape=[3, 1], dtype=Int64, value=
 [[9],
  [7],
  [8]]),
 Tensor(shape=[3, 1], dtype=Int64, value=
 [[0],
  [2],
  [0]]))
>>>
>>> # case 4: If axis=None, compute the maximum of all elements.
>>> x.argmax_with_value(axis=1, keep_dims=True)
(Tensor(shape=[], dtype=Int64, value= 9),
 Tensor(shape=[], dtype=Int64, value= 0))