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https://issues.apache.org/jira/browse/SOLR-12243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16675205#comment-16675205
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Steve Rowe commented on SOLR-12243:
-----------------------------------
[~ehaubert], I was holding off committing, waiting for your response to my
earlier question, which I repeat below:
-----
Elizabeth, I like the idea of adding something along the lines of the text you
suggested to the ref guide. I made a few tweaks (described below) - please let
me know if you think this is okay:
{quote}
h3. Synonyms expansion in phrase queries with slop
When a phrase query with slop (e.g. {{pf}} with {{ps}}) triggers synonym
expansions, a separate clause will be generated for each combination of
synonyms. For example, with configured synonyms {{dog,canine}} and
{{cat,feline}}, the query {{"dog chased cat"}} will generate the following
phrase query clauses:
* {{"dog chased cat"}}
* {{"canine chased cat"}}
* {{"dog chased feline"}}
* {{"canine chased feline"}}{quote}
My changes: this situation happens with all synonyms, not just multi-term
synonyms; user-specified phrase queries (in q param) trigger this situation
when qs is specified, so I generalized it a bit to refer to all phrase+slop
contexts; and I think "combination" is better than "permutation" here.
-----
> Edismax missing phrase queries when phrases contain multiterm synonyms
> ----------------------------------------------------------------------
>
> Key: SOLR-12243
> URL: https://issues.apache.org/jira/browse/SOLR-12243
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: query parsers
> Affects Versions: 7.1
> Environment: RHEL, MacOS X
> Do not believe this is environment-specific.
> Reporter: Elizabeth Haubert
> Assignee: Uwe Schindler
> Priority: Major
> Attachments: SOLR-12243.patch, SOLR-12243.patch, SOLR-12243.patch,
> SOLR-12243.patch, SOLR-12243.patch, SOLR-12243.patch, multiword-synonyms.txt,
> schema.xml, solrconfig.xml
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> synonyms.txt:
> {code}
> allergic, hypersensitive
> aspirin, acetylsalicylic acid
> dog, canine, canis familiris, k 9
> rat, rattus
> {code}
> request handler:
> {code:xml}
> <requestHandler name="/test_qparse_error" class="solr.SearchHandler">
> <lst name="defaults">
> <!-- Query settings -->
> <str name="defType">edismax</str>
> <str name="tie"> 0.4</str>
> <str name="qf">title^100</str>
> <str name="pf">title~20^5000</str>
> <str name="pf2">title~11</str>
> <str name="pf3">title~22^1000</str>
> <str name="df">text</str>
> <!-- mm If two or fewer clauses exist, they all must match.
> If three to five clauses exist, one can be missing. If six to eight clauses
> exist, all but three must match.
> If more than nine clauses exist, only require 30% to match.-->
> <str name="mm">3<-1 6<-3 9<30%</str>
> <str name="q.alt">*:*</str>
> <str name="rows">25</str>
> </lst>
> </requestHandler>
> {code}
> Phrase queries (pf, pf2, pf3) containing "dog" or "aspirin" against the
> above list will not be generated.
> "allergic reaction dog" will generate pf2: "allergic reaction", but not
> pf:"allergic reaction dog", pf2: "reaction dog", or pf3: "allergic reaction
> dog"
> "aspirin dose in rats" will generate pf3: "dose ? rats" but not pf2: "aspirin
> dose" or pf3:"aspirin dose ?"
>
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