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From "Robert Muir (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3821) SloppyPhraseScorer sometimes misses documents that ExactPhraseScorer finds.
Date Thu, 23 Feb 2012 22:59:48 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3821?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Muir updated LUCENE-3821:
--------------------------------

    Description: 
The general bug is a case where a phrase with no slop is found,
but if you add slop its not.

I committed a test today (TestSloppyPhraseQuery2) that actually triggers this case,
jenkins just hasn't had enough time to chew on it.

ant test -Dtestcase=TestSloppyPhraseQuery2 -Dtests.iter=100 is enough to make it fail on trunk
or 3.x


  was:
In upgrading from Solr 1.4 to Solr 3.5, the following phrase searches stopped working in dismax:
  "The Beatles as musicians : Revolver through the Anthology"
  "Color-blindness [print/digital]; its dangers and its detection"
Both of these queries have a repeated work, and have many terms.  It's not the number of terms
or the colon surrounded by spaces, because the following phrase search works in Solr 3.5 (and
Solr 1.4):
    "International encyclopedia of revolution and protest : 1500 to the present"

With Robert Muir's help, we have narrowed the problem down to slop  (proximity in lucene QueryParser,
query slop in dismax).   I have included debugQuery details for  the Beatles search;  I confirmed
the same behavior with the color-blindness search.


Solr 3.5:   it fails when (query) slop setting isn't 0.
----
lucene QueryParser with proximity set to 1 (or anything > 0) :  no match
  URL: q=all_search:"The Beatles as musicians : Revolver through the Anthology"~1
  final query:  all_search:"the beatl as musician revolv through the antholog"~1

lucene QueryParser with proximity set to 0:    result!
  URL:   q=all_search:"The Beatles as musicians : Revolver through the Anthology"
  final query:  all_search:"the beatl as musician revolv through the antholog"

  6.0562754 = (MATCH) weight(all_search:"the beatl as musician revolv through the antholog"
in 1064395), product of:
     <snip>
      48.450203 = idf(all_search: the=3531140 beatl=398 as=645923 musician=11805 revolv=872
through=81366 the=3531140 antholog=11611)
     <snip>

dismax QueryParser with qs=1:  no match
      ps=0
  URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=1&ps=0
  final query:   +(all_search:"the beatl as musician revolv through the antholog"~1)~0.01
(all_search:"the beatl as musician revolv through the antholog")~0.01
      ps=1
  URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=1&ps=1
  final query:   +(all_search:"the beatl as musician revolv through the antholog"~1)~0.01
(all_search:"the beatl as musician revolv through the antholog"~1)~0.01

dismax QueryParser with qs=0:    result!
     ps=0
  URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=0&ps=0
  final query:  +(all_search:"the beatl as musician revolv through the antholog")~0.01 (all_search:"the
beatl as musician revolv through the antholog")~0.01
      ps=1
  URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=0&ps=1
  final query:  +(all_search:"the beatl as musician revolv through the antholog")~0.01 (all_search:"the
beatl as musician revolv through the antholog"~1)~0.01

  8.564867 = (MATCH) sum of:
    4.2824335 = (MATCH) weight(all_search:"the beatl as musician revolv through the antholog"
in 1064395), product of:
        <snip>
        48.450203 = idf(all_search: the=3531140 beatl=398 as=645923 musician=11805 revolv=872
through=81366 the=3531140 antholog=11611)
        <snip>


Solr 1.4:    it works regardless of slop settings
----
lucene QueryParser with any proximity value:    result!
      ~0
  URL:   q=all_search:"The Beatles as musicians : Revolver through the Anthology"
  final query:  all_search:"the beatl as musician revolv through the antholog"
      ~1
  URL: q=all_search:"The Beatles as musicians : Revolver through the Anthology"~1
  final query:  all_search:"the beatl as musician revolv through the antholog"~1

  5.2672544 = fieldWeight(all_search:"the beatl as musician revolv through the antholog" in
3469163), product of:
     <snip>
    48.157753 = idf(all_search: the=3549637 beatl=392 as=751093 musician=11992 revolv=822
through=88522 the=3549637 antholog=11246)
     <snip>

dismax QueryParser with any qs:    result!
      qs=0, ps=0
   URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=0&ps=0
   final query: +(all_search:"the beatl as musician revolv through the antholog")~0.01 (all_search:"the
beatl as musician revolv through the antholog")~0.01
      qs=0, ps=1
   URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=0&ps=1
   final query: +(all_search:"the beatl as musician revolv through the antholog")~0.01 (all_search:"the
beatl as musician revolv through the antholog"~1)~0.01
dismax QueryParser with qs=0:    result!
      qs=1, ps=0
   URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=1&ps=0
   final query: +(all_search:"the beatl as musician revolv through the antholog"~1)~0.01 (all_search:"the
beatl as musician revolv through the antholog")~0.01
      qs=1, ps=1
   URL:  qf=all_search&pf=all_search&q="The Beatles as musicians : Revolver through
the Anthology"&qs=1&ps=1
   final query: +(all_search:"the beatl as musician revolv through the antholog"~1)~0.01 (all_search:"the
beatl as musician revolv through the antholog"~1)~0.01

  7.4490223 = (MATCH) sum of:
  3.7245111 = weight(all_search:"the beatl as musician revolv through the antholog"~1 in 3469163),
product of:
        <snip>
      48.157753 = idf(all_search: the=3549637 beatl=392 as=751093 musician=11992 revolv=822
through=88522 the=3549637 antholog=11246)
        <snip>


More information:

schema.xml:
  <field name="all_search" type="text" indexed="true" stored="false" />

solr 3.5:
      <fieldtype name="text" class="solr.TextField" positionIncrementGap="100" autoGeneratePhraseQueries="true">
      <analyzer>
        <tokenizer class="solr.WhitespaceTokenizerFactory" />
        <filter class="solr.ICUFoldingFilterFactory"/>  
        <filter class="solr.WordDelimiterFilterFactory"
          splitOnCaseChange="1" generateWordParts="1" catenateWords="1"
          splitOnNumerics="0" generateNumberParts="1" catenateNumbers="1"
          catenateAll="0" preserveOriginal="0" stemEnglishPossessive="1" />
        <filter class="solr.EnglishPorterFilterFactory" protected="protwords.txt" />
        <filter class="solr.RemoveDuplicatesTokenFilterFactory" />
      </analyzer>
    </fieldtype>

solr1.4:
<fieldtype name="text" class="solr.TextField" positionIncrementGap="100">
      <analyzer>
        <tokenizer class="solr.WhitespaceTokenizerFactory" />
        <filter class="schema.UnicodeNormalizationFilterFactory" version="icu4j" composed="false"
remove_diacritics="true" remove_modifiers="true" fold="true" />
        <filter class="solr.WordDelimiterFilterFactory" 
          splitOnCaseChange="1" generateWordParts="1" catenateWords="1" 
          splitOnNumerics="0" generateNumberParts="1" catenateNumbers="1" 
          catenateAll="0" preserveOriginal="0" stemEnglishPossessive="1" />
        <filter class="solr.LowerCaseFilterFactory" />
        <filter class="solr.EnglishPorterFilterFactory" protected="protwords.txt" />
        <filter class="solr.RemoveDuplicatesTokenFilterFactory" />
      </analyzer>
    </fieldtype>


And the analysis page shows the same results for Solr 3.5 and 1.4


Solr 3.5:

position 	1	2	3	4	5	6	7	8
term text 	the	beatl	as	musician	revolv	through	the	antholog
keyword 	false	false	false	false	false	false	false	false
startOffset 	0	4	12	15	27	36	44	48
endOffset 	3	11	14	24	35	43	47	57
type 	word	word	word	word	word	word	word	word

Solr 1.4:

term position 	1	2	3	4	5	6	7	8
term text 	the	beatl	as	musician	revolv	through	the	antholog
term type 	word	word	word	word	word	word	word	word
source start,end 	0,3	4,11	12,14	15,24	27,35	36,43	44,47	48,57


For debug purposes, we can consider the Solr document as:

<doc>
  <str name="all_search">The Beatles as musicians : Revolver through the Anthology</str>
</doc>

I can't attached the full SolrDoc as all_search is indexed, but not stored, and I use SolrJ
to write to the index from java objects ... plus our objects have a zillion fields (I work
in a library with very rich metadata and very exacting solr fields).  I have attached the
Solr 3.5 schema and solrconfig, but they are big and ugly for the same reasons.

For more details, see the erroneously titled email thread "result present in Solr 1.4 but
missing in Solr 3.5, dismax only"  started on 2012-02-22 on solr-user@lucene.apache.org.

- Naomi







        Summary: SloppyPhraseScorer sometimes misses documents that ExactPhraseScorer finds.
 (was: search slop problem introduced somewhere between Solr 1.4 and Solr 3.5)

Moving to comments...
                
> SloppyPhraseScorer sometimes misses documents that ExactPhraseScorer finds.
> ---------------------------------------------------------------------------
>
>                 Key: LUCENE-3821
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3821
>             Project: Lucene - Java
>          Issue Type: Bug
>    Affects Versions: 3.5, 4.0
>            Reporter: Naomi Dushay
>         Attachments: schema.xml, solrconfig-test.xml
>
>
> The general bug is a case where a phrase with no slop is found,
> but if you add slop its not.
> I committed a test today (TestSloppyPhraseQuery2) that actually triggers this case,
> jenkins just hasn't had enough time to chew on it.
> ant test -Dtestcase=TestSloppyPhraseQuery2 -Dtests.iter=100 is enough to make it fail
on trunk or 3.x

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