# ES interface for Finite state transducer (FST) (not completion suggester)

**URL:** <https://discuss.elastic.co/t/es-interface-for-finite-state-transducer-fst-not-completion-suggester/45157>\
**Category:** Elasticsearch\
**Created:** [March 22, 2016, 8:40pm UTC](https://discuss.elastic.co/t/es-interface-for-finite-state-transducer-fst-not-completion-suggester/45157 "2016-03-22T20:40:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Yongyao\_Jiang](https://avatars.discourse-cdn.com/v4/letter/y/c4cdca/32.png) [@Yongyao\_Jiang](https://discuss.elastic.co/u/Yongyao_Jiang)\
**Post date:** [March 22, 2016, 8:40pm UTC](https://discuss.elastic.co/t/es-interface-for-finite-state-transducer-fst-not-completion-suggester/45157/1 "2016-03-22T20:40:57Z")

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Hi guys,

I am trying to implement something like entity recognition for user query in a specific domain. The idea is pretty simple, for example, when I get a query like "David Beckham Barack Obama", I will translate it into DB AND BO.

In order to do that, I will maintain a list of domain phrases and implement it with FST. (store in ES/DB might involve latency). But I fail to find anything ES provide, except for suggester, which is not what I want.

Thanks,  
Cody

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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 5, 2017, 11:06pm UTC](https://discuss.elastic.co/t/es-interface-for-finite-state-transducer-fst-not-completion-suggester/45157/2 "2017-07-05T23:06:08Z")

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