Erlend Garåsen created LUCENE-6254:
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Summary: Dictionary-based lemmatizer
Key: LUCENE-6254
URL: https://issues.apache.org/jira/browse/LUCENE-6254
Project: Lucene - Core
Issue Type: New Feature
Components: modules/analysis
Reporter: Erlend Garåsen
Fix For: 5.0
The only way to achieve lemmatization today is to use the SynonymFilterFactory.
The available stemmers are also inaccurate since they are only following
simplistic rules.
A dictionary-based lemmatizer will be more precise because it has the
opportunity to know the part of speech. Thus it provides a more precise method
to stem words compared to other dictionary-based stemmers such as Hunspell.
This is my effort to develop such a lemmatizer for Apache Lucene. The
documentation is temporarily placed here:
http://folk.uio.no/erlendfg/solr/lemmatizer.html
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