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From "Jack Krupansky (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2058) Adds optional "phrase slop" to edismax "pf2", "pf3" and "pf" parameters with field~slop^boost syntax
Date Tue, 15 May 2012 23:13:08 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276322#comment-13276322
] 

Jack Krupansky commented on SOLR-2058:
--------------------------------------

Just a question: Is it 100% compatible with existing edismax usage, so that ps, ps2, and ps3
are default slops and that the individual field slops are optional in pf, pf2, and pf3 and
if not explicitly present will default as they do today from ps, ps2, and ps3? Even so, it
would be nice to specify the default slop up front on pf, pf2, and pf3 to apply to all fields
without having to revert to using ps, ps2, and ps3.

Another simple question: can slop and boost be in either order, or must slop be first, before
boost?

                
> 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 H√łydahl
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: 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/%3C4C659119.2010007@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_1LQoiLBU@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.1.10.1008161300510.6335@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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