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https://issues.apache.org/jira/browse/SOLR-2058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276322#comment-13276322
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Jack Krupansky commented on SOLR-2058:
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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 Høydahl
> 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/%[email protected]%3E
> {quote}
> From Ron Mayer <[email protected]>
> ... 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/%[email protected]%3E]
> {quote}
> From Yonik Seeley <[email protected]>
> 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/%[email protected]%3E]
> {quote}
> From Chris Hostetter <[email protected]>
> 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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