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Use len(classes_) instead of len(set(y_true)) #5275

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merged 6 commits into from Jan 17, 2022
Merged

Use len(classes_) instead of len(set(y_true)) #5275

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33d7845
Use n_classes instead of len(set(y_true))
harupy Jan 17, 2022
bed3a15
fix attribute
harupy Jan 17, 2022
244863f
use classes_
harupy Jan 17, 2022
8bd7f7f
handle meta estimator
harupy Jan 17, 2022
70b55df
address comment
harupy Jan 17, 2022
679203e
fix
harupy Jan 17, 2022
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12 changes: 10 additions & 2 deletions mlflow/sklearn/utils.py
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Expand Up @@ -291,10 +291,18 @@ def _get_classifier_artifacts(fitted_estimator, prefix, X, y_true, sample_weight
def plot_confusion_matrix(*args, **kwargs):
import matplotlib

num_classes = len(set(y_true))
if hasattr(fitted_estimator, "classes_"):
classes = fitted_estimator.classes_
elif hasattr(fitted_estimator, "estimator") and hasattr(
fitted_estimator.estimator, "classes_"
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):
classes = fitted_estimator.estimator.classes_
else:
classes = set(y_true)

with matplotlib.rc_context(
{
"font.size": min(10.0, 50.0 / num_classes),
"font.size": min(10.0, 50.0 / len(classes)),
"axes.labelsize": 10.0,
}
):
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