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Improve confusion matrix plot #5273

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merged 3 commits into from Jan 17, 2022
Merged

Improve confusion matrix plot #5273

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174cd4c
update
WeichenXu123 Jan 15, 2022
618e979
fix
WeichenXu123 Jan 15, 2022
a8bb4ba
update
WeichenXu123 Jan 17, 2022
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16 changes: 12 additions & 4 deletions mlflow/models/evaluation/default_evaluator.py
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Expand Up @@ -599,10 +599,18 @@ def _evaluate_classifier(self):
)

def plot_confusion_matrix():
sk_metrics.ConfusionMatrixDisplay(
confusion_matrix=confusion_matrix,
display_labels=self.label_list,
).plot(cmap="Blues")
import matplotlib

with matplotlib.rc_context(
{
"font.size": min(10, 50.0 / self.num_classes),
"axes.labelsize": 10,
}
):
sk_metrics.ConfusionMatrixDisplay(
confusion_matrix=confusion_matrix,
display_labels=self.label_list,
).plot(cmap="Blues")

if hasattr(sk_metrics, "ConfusionMatrixDisplay"):
self._log_image_artifact(
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14 changes: 13 additions & 1 deletion mlflow/sklearn/utils.py
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Expand Up @@ -288,10 +288,22 @@ def _get_classifier_artifacts(fitted_estimator, prefix, X, y_true, sample_weight
if not _is_plotting_supported():
return []

def plot_confusion_matrix(*args, **kwargs):
import matplotlib

num_classes = len(set(y_true))
with matplotlib.rc_context(
{
"font.size": min(10.0, 50.0 / num_classes),
"axes.labelsize": 10.0,
}
):
return sklearn.metrics.plot_confusion_matrix(*args, **kwargs)

classifier_artifacts = [
_SklearnArtifact(
name=prefix + "confusion_matrix",
function=sklearn.metrics.plot_confusion_matrix,
function=plot_confusion_matrix,
arguments=dict(
estimator=fitted_estimator,
X=X,
Expand Down