zhengruifeng opened a new pull request #26135: [SPARK-29489][ML][PySpark] ml.evaluation support log-loss URL: https://github.com/apache/spark/pull/26135 ### What changes were proposed in this pull request? `ml.MulticlassClassificationEvaluator` & `mllib.MulticlassMetrics` support log-loss ### Why are the changes needed? log-loss is an important classification metric and is widely used in practice ### Does this PR introduce any user-facing change? Yes, add new option ("logloss") and a related param `eps` ### How was this patch tested? added testsuites & local tests refering to sklearn
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