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Posted to dev@lucene.apache.org by "Ryan McKinley (Commented) (JIRA)" <ji...@apache.org> on 2012/03/11 23:30:39 UTC
[jira] [Commented] (SOLR-3231) Add the ability to KStemmer to
preserve the original token when stemming
[ https://issues.apache.org/jira/browse/SOLR-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13227257#comment-13227257 ]
Ryan McKinley commented on SOLR-3231:
-------------------------------------
If I understand the patch, this patch just sets the tokenType attribute to "STEM" right?
> 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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