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Posted to dev@lucene.apache.org by "Tommaso Teofili (JIRA)" <ji...@apache.org> on 2018/10/17 17:46:00 UTC
[jira] [Commented] (SOLR-12879) Query Parser for MinHash/LSH
[ https://issues.apache.org/jira/browse/SOLR-12879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16653938#comment-16653938 ]
Tommaso Teofili commented on SOLR-12879:
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bq. Should the score from the overall query be normalised?
I think that may depend, in some edge cases non normalized scores may generate unexpected bias. But all in all I don't think it should be.
> Query Parser for MinHash/LSH
> ----------------------------
>
> Key: SOLR-12879
> URL: https://issues.apache.org/jira/browse/SOLR-12879
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: query parsers
> Affects Versions: master (8.0)
> Reporter: Andy Hind
> Priority: Major
> Fix For: master (8.0)
>
>
> Following on from https://issues.apache.org/jira/browse/LUCENE-6968, provide a query parser that builds queries that provide a measure of Jaccard similarity. The initial patch includes banded queries that were also proposed on the original issue.
>
> I have one outstanding questions:
> * Should the score from the overall query be normalised?
> Note, that the band count is currently approximate and may be one less than in practise.
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