Liang-Chi Hsieh created SPARK-7143:
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Summary: Add BM25 Estimator
Key: SPARK-7143
URL: https://issues.apache.org/jira/browse/SPARK-7143
Project: Spark
Issue Type: New Feature
Components: ML
Reporter: Liang-Chi Hsieh
[BM25|http://en.wikipedia.org/wiki/Okapi_BM25] is a retrieval function used to
rank documents. It is commonly used in IR tasks and can be parallel. This issue
is proposed to add it into Spark ML.
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