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Posted to dev@lucene.apache.org by "Andy Webb (Jira)" <ji...@apache.org> on 2019/09/10 18:04:00 UTC

[jira] [Created] (SOLR-13751) Add BooleanSimilarityFactory to Solr

Andy Webb created SOLR-13751:
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             Summary: Add BooleanSimilarityFactory to Solr
                 Key: SOLR-13751
                 URL: https://issues.apache.org/jira/browse/SOLR-13751
             Project: Solr
          Issue Type: New Feature
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Andy Webb


Solr doesn't expose Lucene's BooleanSimilarity (ref LUCENE-5867) so it's not available for use in situations where BM25/TDF-IF are not useful.

Our use case is ngram-driven suggestions, where the frequency of occurrence of a particular sequence of characters is not something users would expect to be taken into account when ordering suggestions.

 

Here's my draft PR: [https://github.com/andywebb1975/lucene-solr/pull/1] (I'm at the pre-Activate Hack Day in Washington DC.)



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