mindspore.train.Top5CategoricalAccuracy

class mindspore.train.Top5CategoricalAccuracy

Calculates the top-5 categorical accuracy. This class is a specialized class for TopKCategoricalAccuracy. Refer to mindspore.train.TopKCategoricalAccuracy for more details.

Supported Platforms:

Ascend GPU CPU

Examples

>>> import numpy as np
>>> from mindspore import nn, Tensor
>>>
>>> x = Tensor(np.array([[0.2, 0.5, 0.3, 0.6, 0.2], [0.1, 0.35, 0.5, 0.2, 0.],
...            [0.9, 0.6, 0.2, 0.01, 0.3]]), mindspore.float32)
>>> y = Tensor(np.array([2, 0, 1]), mindspore.float32)
>>> topk = nn.Top5CategoricalAccuracy()
>>> topk.clear()
>>> topk.update(x, y)
>>> output = topk.eval()
>>> print(output)
1.0