Shuo Xiang created SPARK-3568:
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Summary: Add metrics for ranking algorithms
Key: SPARK-3568
URL: https://issues.apache.org/jira/browse/SPARK-3568
Project: Spark
Issue Type: New Feature
Components: ML, MLlib
Reporter: Shuo Xiang
Include widely-used metrics for ranking algorithms, including:
- Mean Average Precision
- Precision@n: top-n precision
- Discounted cumulative gain (DCG) and NDCG
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