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https://issues.apache.org/jira/browse/SOLR-12879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16659170#comment-16659170
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Christine Poerschke commented on SOLR-12879:
--------------------------------------------
Late to the party here. Hello.
* Would it be possible to backport to branch_7x too? LUCENE-6968 mentioned
above appears to be in 7.0 but perhaps there are other dependencies? During the
Lucene Hackday in Montreal [~andyhind] explained a little on what this logic is
about and I think this could be of interest to folks on the upcoming 7.6
release too.
* Is the intended use case for this query parser primarily direct e.g. via the
{{q}} and {{fq}} parameters or indirect somehow e.g. via streaming expressions?
If the use case is direct:
** the parser could potentially be given a default name of (say) {{minhash}}
and included in the standard plugins i.e.
https://github.com/apache/lucene-solr/blob/releases/lucene-solr/7.5.0/solr/core/src/java/org/apache/solr/search/QParserPlugin.java#L46
*** Users (and tests) would not need to configure {{<queryParser name="minhash"
class="org.apache.solr.search.MinHashQParserPlugin" />}} then.
** the parser could be included in the Solr Reference Guide e.g. the
http://lucene.apache.org/solr/guide/7_5/other-parsers.html section which is
https://github.com/apache/lucene-solr/blob/releases/lucene-solr/7.5.0/solr/solr-ref-guide/src/other-parsers.adoc
in version control.
* The solr/CHANGES.txt entry lacks the customary attribution, just an oversight
I'm sure and easily fixed.
> 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
> Assignee: Tommaso Teofili
> Priority: Major
> Fix For: master (8.0)
>
> Attachments: minhash.patch
>
>
> 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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