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https://issues.apache.org/jira/browse/SOLR-2058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Dyer updated SOLR-2058:
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Attachment: SOLR-2058.patch
Here is an updated patch based on Ron's August 31, 2010 version. I've cleaned
up the code a little and added a unit test scenario. To recap what this does:
- Fully backwards compatible with the existing pf/pf2/pf3/ps syntax.
- Allows an optional slop parameter in the syntax "FieldName~slop^boost"
- "ps" value is the default if the slop is not specified per-field
This will give users the flexibility to say something like "if the words are
kinda near each other, boost a little but if they are really near each other,
boost a lot, etc"
Unless someone objects, I will re-assign this issue to myself and commit early
next week.
> Adds optional "phrase slop" to edismax "pf2", "pf3" and "pf" parameters with
> field~slop^boost syntax
> ----------------------------------------------------------------------------------------------------
>
> Key: SOLR-2058
> URL: https://issues.apache.org/jira/browse/SOLR-2058
> Project: Solr
> Issue Type: Improvement
> Components: query parsers
> Environment: n/a
> Reporter: Ron Mayer
> Assignee: Jan Høydahl
> Priority: Minor
> Fix For: 4.0
>
> Attachments: SOLR-2058.patch, edismax_pf_with_slop_v2.1.patch,
> edismax_pf_with_slop_v2.patch, pf2_with_slop.patch
>
>
> http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201008.mbox/%3c4c659119.2010...@0ape.com%3E
> {quote}
> From Ron Mayer <r...@0ape.com>
> ... my results might be even better if I had a couple different "pf2"s with
> different "ps"'s at the same time. In particular. One with ps=0 to put a
> high boost on ones the have the right ordering of words. For example
> insuring that [the query]:
> "red hat black jacket"
> boosts only documents with "red hats" and not "black hats". And another
> pf2 with a more modest boost with ps=5 or so to handle the query above also
> boosting docs with
> "red baseball hat".
> {quote}
> [http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201008.mbox/%3caanlktimd+v3g6d_mnhp+jykkd+dej8fvmvf_1lqoi...@mail.gmail.com%3E]
> {quote}
> From Yonik Seeley <yo...@lucidimagination.com>
> Perhaps fold it into the pf/pf2 syntax?
> pf=text^2 // current syntax... makes phrases with a boost of 2
> pf=text~1^2 // proposed syntax... makes phrases with a slop of 1 and
> a boost of 2
> That actually seems pretty natural given the lucene query syntax - an
> actual boosted sloppy phrase query already looks like
> {{text:"foo bar"~1^2}}
> -Yonik
> {quote}
> [http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201008.mbox/%3calpine.deb.1.10.1008161300510.6...@radix.cryptio.net%3E]
> {quote}
> From Chris Hostetter <hossman_luc...@fucit.org>
> Big +1 to this idea ... the existing "ps" param can stick arround as the
> default for any field that doesn't specify it's own slop in the pf/pf2/pf3
> fields using the "~" syntax.
> -Hoss
> {quote}
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