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https://issues.apache.org/jira/browse/SOLR-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jamie Johnson updated SOLR-3231:
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Attachment: (was: KStemFilter.patch)
> Add the ability to KStemmer to preserve the original token when stemming
> ------------------------------------------------------------------------
>
> Key: SOLR-3231
> URL: https://issues.apache.org/jira/browse/SOLR-3231
> Project: Solr
> Issue Type: Improvement
> Components: Schema and Analysis
> Affects Versions: 4.0
> Reporter: Jamie Johnson
> Attachments: KStemFilter.patch
>
>
> While using the PorterStemmer, I found that there were often times that it
> was far to aggressive in it's stemming. In my particular case it is
> unrealistic to provide a protected word list which captures all possible
> words which should not be stemmed. To avoid this I proposed a solution
> whereby we store the original token as well as the stemmed token so exact
> searches would always work. Based on discussions on the mailing list Ahmet
> Arslan, I believe the attached patch to KStemmer provides the desired
> capabilities through a configuration parameter. This largely is a copy of
> the org.apache.lucene.wordnet.SynonymTokenFilter.
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