# Wandering how rasa split nlu works?

**URL:** <https://forum.rasa.com/t/wandering-how-rasa-split-nlu-works/67244>\
**Category:** Rasa Open Source\
**Created:** [June 17, 2025, 10:52am UTC](https://forum.rasa.com/t/wandering-how-rasa-split-nlu-works/67244 "2025-06-17T10:52:26Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![BimaAdhityaS](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/bimaadhityas/32/24580_2.png) [@BimaAdhityaS](https://forum.rasa.com/u/BimaAdhityaS)\
**Post date:** [June 17, 2025, 10:52am UTC](https://forum.rasa.com/t/wandering-how-rasa-split-nlu-works/67244/1 "2025-06-17T10:52:26Z")

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in the shell comand of `rasa split nlu` **what algorithm it used for splitting**? i know the default split the nlu.yaml into a 80% for train 20% for test i want to know specifically what it is.

Ty for answering