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From "Ron Mayer (JIRA)" <j...@apache.org>
Subject [jira] Issue Comment Edited: (SOLR-2058) Adds optional "slop" to "pf2", "pf3" and "pf" parameters
Date Thu, 19 Aug 2010 12:05:36 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12900260#action_12900260
] 

Ron Mayer edited comment on SOLR-2058 at 8/19/10 8:04 AM:
----------------------------------------------------------

This patch is my first draft at implementing this feature.

Any feedback would be appreciated.

It seems to happily turn a query like
[http://localhost:8983/solr/select?defType=edismax&fl=id,text,score&q=enterprise+search+foobar&ps=5&qf=text&debugQuery=true&pf2=name~0^5555&pf2=name^12+name~10]

into what I believe is the desired parsed query:

+((text:enterpris) (text:search) (text:foobar)) ((name:"enterprise search"~5^12.0) (name:"search
foobar"~5^12.0)) ((name:"enterprise search"^5555.0) (name:"search foobar"^5555.0)) ((name:"enterprise
search"~10) (name:"search foobar"~10))

which looks like it should give a high boost to docs where both words appear right next to
each other, but still substantial boosts to docs where the pairs of words are a few words
apart.

      was (Author: ramayer):
    This patch is my first draft at implementing this feature.

Any feedback would be appreciated.

It seems to happily turn a query like
[http://localhost:8983/solr/select?defType=edismax&fl=id,text,score&q=enterprise+search+foobar&ps=5&qf=text&debugQuery=true&pf2=name~0^5555&ps=7&pf2=name^12+name~10]

into what I believe is the desired parsed query:

+((text:enterpris) (text:search) (text:foobar)) ((name:"enterprise search"~5^12.0) (name:"search
foobar"~5^12.0)) ((name:"enterprise search"^5555.0) (name:"search foobar"^5555.0)) ((name:"enterprise
search"~10) (name:"search foobar"~10))

which looks like it should give a high boost to docs where both words appear right next to
each other, but still substantial boosts to docs where the pairs of words are a few words
apart.
  
> Adds optional "slop" to "pf2", "pf3" and "pf" parameters 
> ---------------------------------------------------------
>
>                 Key: SOLR-2058
>                 URL: https://issues.apache.org/jira/browse/SOLR-2058
>             Project: Solr
>          Issue Type: Improvement
>          Components: SearchComponents - other
>    Affects Versions: 3.1, 4.0
>         Environment: n/a
>            Reporter: Ron Mayer
>            Priority: Minor
>         Attachments: pf2_with_slop.patch
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> 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:
>   "red hat black jacket"
>  boosts only 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
> http
> {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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