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Reorder auc only when needed #91

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Feb 3, 2022
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3 changes: 3 additions & 0 deletions anomalib/core/metrics/auroc.py
Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
"""Implementation of AUROC metric based on TorchMetrics."""
import torch
from torch import Tensor
from torchmetrics import ROC
from torchmetrics.functional import auc
Expand All @@ -14,4 +15,6 @@ def compute(self) -> Tensor:
Value of the AUROC metric
"""
fpr, tpr, _thresholds = super().compute()
if not (torch.all(fpr.diff() <= 0) or torch.all(fpr.diff() >= 0)):
return auc(fpr, tpr, reorder=True) # only reorder if fpr is not increasing or decreasing
return auc(fpr, tpr)