19 oct 1956 año - Chomsky Hierarchy

Descripción:

Chomsky is also known for developing the hierarchy of language in 1956; it was aptly named the Chomsky Hierarchy. The Chomsky Hierarchy is a collection of four classes of formal languages, each of which is a proper subset of the classes above it, and each of which corresponds to both a generating grammar and to a recognizing machine (Chomsky, n.d.).

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