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https://issues.apache.org/jira/browse/OPENNLP-1229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17693659#comment-17693659
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Martin Wiesner commented on OPENNLP-1229:
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Actually, "*thi*" is the expected outcome for "this" for every
{{PorterStemmer}} implementation and thus not a real "bug". For context, see
FAQ No. 3 at [https://tartarus.org/martin/PorterStemmer
|https://tartarus.org/martin/PorterStemmer/].
You can cross-check this with [NLTK|http://text-processing.com/demo/stem/]. It
yields the same "thi" as stem of "this".
Hint: {{SnowballStemmer}} stems "this" -> "this".
> stem function giving wrong output
> ---------------------------------
>
> Key: OPENNLP-1229
> URL: https://issues.apache.org/jira/browse/OPENNLP-1229
> Project: OpenNLP
> Issue Type: Bug
> Components: Stemmer
> Environment: Ubuntu-18.04, JDK-8
> Reporter: Divya Rani
> Priority: Minor
>
> As opennlp is using PorterStemmer for stemming PorterStemmer seems to be
> stemming "this" -> "thi".
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