Multi word synonyms

[Sanjana Sridhar]

Hello,

Does anyone have a good solution for working with multi word synonyms? I've
been reading a lot about this online and haven't really found a great
solution to it. I use the SynonymFilterFactory at index time, but words
don't really get matched to the appropriate multi word synonyms, even
though using the Analysis tool shows that it should be matched.

Examples:

coke, coca cola



This is the configuration I have on text fields:

<fieldType name ="text_icu_english" class="solr.TextField"
positionIncrementGap="100" multiValued="true">
        <analyzer type="index">
        <!-- The white space tokenizer splits on white space but preserves
the tokens so that it can be used by the next filter -->
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.SynonymFilterFactory" ignoreCase="true" expand=
"true" synonyms="synonyms.txt" />
        <!-- This filter splits a word on punctuation, preserves the
original, concatenates the split words and also stems english possessive
nouns -->
        <filter class="solr.WordDelimiterFilterFactory"
generateWordParts="0" generateNumberParts = "0"
          splitOnCaseChange = "0" preserveOriginal="1" catenateWords="1"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.EnglishMinimalStemFilterFactory"/>
        <filter class="solr.ICUFoldingFilterFactory"/>
        <filter class="solr.PatternReplaceFilterFactory"
pattern="(.*[\*].*)"  replacement=""/>
        <filter class="solr.TrimFilterFactory"/>
        <filter class="solr.LengthFilterFactory" min="1" max="100"/>
        <filter class="solr.ClassicFilterFactory"/>

      </analyzer>
      <analyzer type="query">
        <!-- The white space tokenizer splits on white space but preserves
the tokens so that it can be used by the next filter -->
         <tokenizer class="solr.WhitespaceTokenizerFactory"/>
         <!-- This filter splits a word on punctuation, preserves the
original, concatenates the split words and also stems english possessive
nouns -->
         <filter class="solr.WordDelimiterFilterFactory"
generateWordParts="0" generateNumberParts = "0"
          splitOnCaseChange = "0" preserveOriginal="1" catenateWords="1"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.EnglishMinimalStemFilterFactory"/>
        <filter class="solr.ICUFoldingFilterFactory"/>
        <filter class="solr.ClassicFilterFactory"/>
      </analyzer>
      <similarity class="solr.BM25SimilarityFactory">
        <float name="b">0.0</float>
      </similarity>
    </fieldType>


Greatly appreciate any help ya'll can offer.

Thanks,
Sanjana

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