Discussion Chomsky hierarchy is a hierarchical arrangement of classes of formal grammar. According to Chomsky's Hierarchy, grammar is of four types, which are as follows: Type 0 grammar is unrestricted grammar and is recognized using a Turing machine. Type 1 grammar is context-sensitive grammar and is recognized using a Linear Bounded Automata. Figure ChomskyOverview: The Chomsky hierarchy consists of four classes of languages (i.e., Unrestricted, Context Sensitive, Context Free, and Regular), each defined by a class of grammars. Chomsky introduced and considered these language classes as possible models of natural language. Grammars specify how the strings in a language can be generated. Grammars are finite representations of formal languages. In this chapter we describe four broad categories of grammars and corresponding ... Chomsky Hierarchy The Chomsky Hierarchy, introduced by Noam Chomsky in 1956, is a classification of formal languages based on their generative power. It defines four types of languages, each associated with a specific type of grammar and computational model. This hierarchy is foundational in the theory of computation and linguistics, as it describes the relationships between different classes of languages and the machines that recognize them. Developed by Noam Chomsky, the hierarchy classifies formal grammars into four types, providing a framework to understand language complexity and computational power.