# Chomsky hierarchy

> containment hierarchy of classes of formal grammars

**Wikidata**: [Q190913](https://www.wikidata.org/wiki/Q190913)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Chomsky_hierarchy)  
**Source**: https://4ort.xyz/entity/chomsky-hierarchy


## References

1. Freebase Data Dumps. 2013
2. Quora
3. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)