# Regex and intent classification

**URL:** <https://forum.rasa.com/t/regex-and-intent-classification/14031>\
**Category:** Rasa Open Source\
**Created:** [August 7, 2019, 9:00am UTC](https://forum.rasa.com/t/regex-and-intent-classification/14031 "2019-08-07T09:00:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![PierreFG](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/pierrefg/32/3540_2.png) [@PierreFG](https://forum.rasa.com/u/PierreFG)\
**Post date:** [August 7, 2019, 9:00am UTC](https://forum.rasa.com/t/regex-and-intent-classification/14031/1 "2019-08-07T09:00:16Z")

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Hi,

It’s written in the doc that REGEX are used in intent classification (after being processed in the regexfeaturizer). I’ve been searching in the code of the [sklearn intent classifier](https://github.com/RasaHQ/rasa/blob/master/rasa/nlu/classifiers/sklearn_intent_classifier.py) and the [embedding](https://github.com/RasaHQ/rasa/blob/master/rasa/nlu/classifiers/embedding_intent_classifier.py) one but I’ve seen no trace of any use.

Any idea ?

Thank you, Pierre

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**Author:** ![JiteshGaikwad](https://avatars.discourse-cdn.com/v4/letter/j/77aa72/32.png) [@JiteshGaikwad](https://forum.rasa.com/u/JiteshGaikwad)\
**Post date:** [August 7, 2019, 10:42am UTC](https://forum.rasa.com/t/regex-and-intent-classification/14031/2 "2019-08-07T10:42:41Z")

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Hey @PierreFG are you searching for this one:

> <https://github.com/RasaHQ/rasa/blob/06651b2034429ce0d8d66f4bfe3a1ce4667832cd/rasa/nlu/classifiers/sklearn_intent_classifier.py#L50>