Computes the precision@k for the specified values of k
(output, target, topk=(1,))
| 413 | |
| 414 | |
| 415 | def accuracy(output, target, topk=(1,)): |
| 416 | """Computes the precision@k for the specified values of k""" |
| 417 | maxk = max(topk) |
| 418 | batch_size = target.size(0) |
| 419 | |
| 420 | _, pred = output.topk(maxk, 1, True, True) |
| 421 | pred = pred.t() |
| 422 | correct = pred.eq(target.view(1, -1).expand_as(pred)) |
| 423 | |
| 424 | res = [] |
| 425 | for k in topk: |
| 426 | correct_k = correct[:k].reshape(-1).float().sum(0, keepdim=True) |
| 427 | res.append(correct_k.mul_(100.0 / batch_size)) |
| 428 | return res |
| 429 | |
| 430 | |
| 431 | def detailed_metrics(output, target): |