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Fix target label leakage in trainer features #135

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Merged
jeffhandley merged 3 commits into from
Oct 19, 2026
Merged

Fix target label leakage in trainer features #135

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2eceb85
Fix target label leakage in trainer features
matouskozak Oct 16, 2026
486c1d7
Simplify label leakage fix to a single feature filter
matouskozak Oct 16, 2026
c80db58
Explicitly allowlist trainer feature columns
matouskozak Oct 16, 2026
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2 changes: 1 addition & 1 deletion IssueLabeler/src/Trainer/Trainer.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -94,7 +94,7 @@ static async Task CreateModel(string dataPath, string modelPath, ModelType type,
.Append(xf.Text.FeaturizeText(
"Features",
new TextFeaturizingEstimator.Options(),
columns.Select(c => c.Name).ToArray()))
columns.Where(c => c.Name is not "Label").Select(c => c.Name).ToArray()))
.AppendCacheCheckpoint(mlContext)
.Append(mlContext.MulticlassClassification.Trainers.SdcaMaximumEntropy("LabelKey"))
.Append(xf.Conversion.MapKeyToValue("PredictedLabel"));
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