# Want to implement wordnet lemmatizer

**URL:** <https://discuss.elastic.co/t/want-to-implement-wordnet-lemmatizer/25519>\
**Category:** Elasticsearch\
**Created:** [July 14, 2015, 1:07pm UTC](https://discuss.elastic.co/t/want-to-implement-wordnet-lemmatizer/25519 "2015-07-14T13:07:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![skdangi](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/skdangi/32/3471_2.png) [@skdangi](https://discuss.elastic.co/u/skdangi)\
**Post date:** [July 14, 2015, 1:07pm UTC](https://discuss.elastic.co/t/want-to-implement-wordnet-lemmatizer/25519/1 "2015-07-14T13:07:02Z")

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Hello all,

In elasticsearch normal stemming is not working for me.  
I want to use lemmatization. Do we have any custom implementation for wordnet lemmatization?  
I don't see any out of box implementation by elastic search.

By the way if anybody has used lemmatization, what is the performance impact for the same.?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 12:01am UTC](https://discuss.elastic.co/t/want-to-implement-wordnet-lemmatizer/25519/2 "2017-07-06T00:01:35Z")

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