[ https://issues.apache.org/jira/browse/LUCENE-7621?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adrien Grand updated LUCENE-7621: --------------------------------- Attachment: LUCENE-7621.patch Here is a patch that adds such a query in the sandbox. It can't be as smart as {{MinShouldMatchSumScorer}} due to the fact that it can't predict values of the number of required clauses, but it is still smarter than a DisjunctionSumScorer whose two-phase iterator would check the {{freq()}}. > Per-document minShouldMatch > --------------------------- > > Key: LUCENE-7621 > URL: https://issues.apache.org/jira/browse/LUCENE-7621 > Project: Lucene - Core > Issue Type: New Feature > Reporter: Adrien Grand > Priority: Minor > Attachments: LUCENE-7621.patch > > > I have seen similar requirements a couple times but could not find any > related issue so I am opening one now. The idea would be to allow passing a > {{LongValuesSource}} rather than an integer as the {{minShouldMatch}} > parameter of {{BooleanQuery}} so that the number of required clauses can > depend on the document that is being matched. In terms of implementation, it > looks like it would be straightforward as we would just have to update the > value of {{minShouldMatch}} in {{MinShouldMatchSumScorer.setDocAndFreq}} and > things would still be efficient, ie. we would still use advance on the costly > clauses. > This kind of feature would allow to run queries that must match eg. 80% of > the terms that a document contains (by indexing the number of terms in a > separate field). It would also make it possible for Luwak or ES' percolator > to index boolean queries that have a value of {{minShouldMatch}} greater than > 1 more efficiently. > I do not have any plans to work on it soon but I am curious how much interest > this feature would drive. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org