Adrien Grand created LUCENE-8216:
------------------------------------
Summary: Better cross-field scoring
Key: LUCENE-8216
URL: https://issues.apache.org/jira/browse/LUCENE-8216
Project: Lucene - Core
Issue Type: Improvement
Reporter: Adrien Grand
Fix For: master (8.0)
I'd like Lucene to have better support for scoring across multiple fields.
Today we have BlendedTermQuery which tries to help there but it probably tries
to do too much on some aspects (handling cross-field term queries AND synonyms)
and too little on other ones (it tries to merge index-level statistics, but not
per-document statistics like tf and norm).
Maybe we could implement something like BM25F so that queries across multiple
fields would retain the benefits of BM25 like the fact that the impact of the
term frequency saturates quickly, which is not the case with BlendedTermQuery
if you have occurrences across many fields.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
