Pham Nguyen Tuan Anh created SPARK-27540:
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Summary: Add 'meanAveragePrecision_at_k' metric to RankingMetrics
Key: SPARK-27540
URL: https://issues.apache.org/jira/browse/SPARK-27540
Project: Spark
Issue Type: New Feature
Components: MLlib
Affects Versions: 2.4.1
Reporter: Pham Nguyen Tuan Anh
Sometimes, we only focus on MAP of top-k results.
This ticket adds MAP@k to RankingMetrics, besides existing MAP.
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