mindspore.nn.Top1CategoricalAccuracy
- class mindspore.nn.Top1CategoricalAccuracy[source]
Calculates the top-1 categorical accuracy. This class is a specialized class for TopKCategoricalAccuracy. Refer to class ‘TopKCategoricalAccuracy’ for more details.
Examples
>>> 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.Top1CategoricalAccuracy() >>> topk.clear() >>> topk.update(x, y) >>> output = topk.eval() >>> print(output) 0.0