xautodl/lib/procedures/eval_funcs.py
2021-04-26 21:44:03 +08:00

29 lines
790 B
Python

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# Copyright (c) Xuanyi Dong [GitHub D-X-Y], 2020.04 #
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import abc
def obtain_accuracy(output, target, topk=(1,)):
"""Computes the precision@k for the specified values of k"""
maxk = max(topk)
batch_size = target.size(0)
_, pred = output.topk(maxk, 1, True, True)
pred = pred.t()
correct = pred.eq(target.view(1, -1).expand_as(pred))
res = []
for k in topk:
correct_k = correct[:k].view(-1).float().sum(0, keepdim=True)
res.append(correct_k.mul_(100.0 / batch_size))
return res
class EvaluationMetric(abc.ABC):
def __init__(self):
self._total_metrics = 0
def __len__(self):
return self._total_metrics