Chomsky Hierarchy - Explained in Detail with examples
Chomsky Hierarchy represents the class of languages that are accepted by the different machine.
According to Noam Chomsky, there are four types of grammars − Type 0, Type 1, Type 2, and Type 3.
Types of Grammars
Chomsky Classification
+----------------------------------------------------------------------------------------------------------------------+
| Chomsky Hierarchy |
+---------------------------+-----------------------------+---------------------------+-----------------------------+
| Grammar | Grammar | Language | Automaton |
| Type | Accepted | Accepted | |
+---------------------------+-----------------------------+---------------------------+-----------------------------+
| | Unrestricted | Recursively | Turing |
| Type 0 | Grammar | Enumerable | Machine |
| | | Language | |
+---------------------------+-----------------------------+---------------------------+-----------------------------+
| | Context | Context | Linear |
| Type 1 | Sensitive | Sensitive | Bounded |
| | Grammar | Language | Automaton |
+---------------------------+-----------------------------+---------------------------+-----------------------------+
| | Context | Context | Pushdown |
| Type 2 | Free | Free | Automaton |
| | Grammar | Language | |
+---------------------------+-----------------------------+---------------------------+-----------------------------+
| Type 3 | Regular | Regular | Finite |
| | Grammar | Language | Automaton |
+---------------------------+-----------------------------+---------------------------+-----------------------------+
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