Cameron VandenBerg created LUCENE-9537:
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Summary: Add Indri Search Engine Functionality to Lucene
Key: LUCENE-9537
URL: https://issues.apache.org/jira/browse/LUCENE-9537
Project: Lucene - Core
Issue Type: Improvement
Components: core/search
Reporter: Cameron VandenBerg
Attachments: LUCENE-INDRI.patch
Indri ([http://lemurproject.org/indri.php]) is an academic search engine
developed by The University of Massachusetts and Carnegie Mellon University.
The major difference between Lucene and Indri is that Indri will give a
document a "smoothing score" to a document that does not contain the search
term, which has improved the search ranking accuracy in our experiments. I
have created an Indri patch, which adds the search code needed to implement the
Indri AND logic as well as Indri's implementation of Dirichlet Smoothing.
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