def test_v1_3_0_deprecated_metrics():
from pytorch_lightning.metrics.functional.classification import to_onehot
with pytest.deprecated_call(match='will be removed in v1.3'):
to_onehot(torch.tensor([1, 2, 3]))
from pytorch_lightning.metrics.functional.classification import to_categorical
with pytest.deprecated_call(match='will be removed in v1.3'):
to_categorical(torch.tensor([[0.2, 0.5], [0.9, 0.1]]))
from pytorch_lightning.metrics.functional.classification import get_num_classes
with pytest.deprecated_call(match='will be removed in v1.3'):
get_num_classes(pred=torch.tensor([0, 1]), target=torch.tensor([1, 1]))
x_binary = torch.tensor([0, 1, 2, 3])
y_binary = torch.tensor([0, 1, 2, 3])
from pytorch_lightning.metrics.functional.classification import roc
with pytest.deprecated_call(match='will be removed in v1.3'):
roc(pred=x_binary, target=y_binary)
from pytorch_lightning.metrics.functional.classification import _roc
with pytest.deprecated_call(match='will be removed in v1.3'):
_roc(pred=x_binary, target=y_binary)
x_multy = torch.tensor([
[0.85, 0.05, 0.05, 0.05],
[0.05, 0.85, 0.05, 0.05],
[0.05, 0.05, 0.85, 0.05],
[0.05, 0.05, 0.05, 0.85],
])
y_multy = torch.tensor([0, 1, 3, 2])
from pytorch_lightning.metrics.functional.classification import multiclass_roc
with pytest.deprecated_call(match='will be removed in v1.3'):
multiclass_roc(pred=x_multy, target=y_multy)
from pytorch_lightning.metrics.functional.classification import average_precision
with pytest.deprecated_call(match='will be removed in v1.3'):
average_precision(pred=x_binary, target=y_binary)
from pytorch_lightning.metrics.functional.classification import precision_recall_curve
with pytest.deprecated_call(match='will be removed in v1.3'):
precision_recall_curve(pred=x_binary, target=y_binary)
from pytorch_lightning.metrics.functional.classification import multiclass_precision_recall_curve
with pytest.deprecated_call(match='will be removed in v1.3'):
multiclass_precision_recall_curve(pred=x_multy, target=y_multy)
from pytorch_lightning.metrics.functional.reduction import reduce
with pytest.deprecated_call(match='will be removed in v1.3'):
reduce(torch.tensor([0, 1, 1, 0]), 'sum')
from pytorch_lightning.metrics.functional.reduction import class_reduce
with pytest.deprecated_call(match='will be removed in v1.3'):
class_reduce(
torch.randint(1, 10, (50, )).float(),
torch.randint(10, 20, (50, )).float(),
torch.randint(1, 100, (50, )).float())
def test_roc_curve(pred, target, expected_tpr, expected_fpr):
fpr, tpr, thresh = roc(torch.tensor(pred), torch.tensor(target))
assert fpr.shape == tpr.shape
assert fpr.size(0) == thresh.size(0)
assert torch.allclose(fpr, torch.tensor(expected_fpr).to(fpr))
assert torch.allclose(tpr, torch.tensor(expected_tpr).to(tpr))
def forward(
self,
pred: torch.Tensor,
target: torch.Tensor,
sample_weight: Optional[Sequence] = None
) -> Tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
"""
Actual metric computation
Args:
pred: predicted labels
target: groundtruth labels
sample_weight: the weights per sample
Return:
- false positive rate
- true positive rate
- thresholds
"""
return roc(pred=pred, target=target,
sample_weight=sample_weight,
pos_label=self.pos_label)
