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https://issues.apache.org/jira/browse/SOLR-13751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Webb updated SOLR-13751:
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Description:
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. (Fields using
this similarity will likely also set omitNorms and omitTermFreqAndPositions to
true.)
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 PR: [https://github.com/apache/lucene-solr/pull/867] (I'm at Activate
if anyone would like to talk this through in person.)
was:
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/apache/lucene-solr/pull/867] (I'm at
the pre-Activate Hack Day in Washington DC.)
> 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
> Priority: Minor
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> 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. (Fields
> using this similarity will likely also set omitNorms and
> omitTermFreqAndPositions to true.)
> 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 PR: [https://github.com/apache/lucene-solr/pull/867] (I'm at
> Activate if anyone would like to talk this through in person.)
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