Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Context free grammar is called Type 2 grammar...
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Context free grammar is called Type 2 grammar because of ______________ hierarchy.
- a)Greibach
- b)Backus
- c)Chomsky
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Context free grammar is called Type 2 grammar because of _____________...
Chomsky hierarchy decide four type of language :Type 3- Regular Language, Type 2-Context free language, Type 1-Context Sensitive Language, Type 0- Unrestricted or Recursively Ennumerable language.
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Context free grammar is called Type 2 grammar because of _____________...
Chomsky Hierarchy and Type 2 Grammar
Chomsky hierarchy is a classification of formal grammars based on their generative power. It is named after Noam Chomsky, who introduced the concept in the 1950s. Chomsky hierarchy consists of four types of grammars, with Type 2 grammar being context-free grammar.
Type 2 Grammar
Context-free grammar is classified as Type 2 grammar in the Chomsky hierarchy. Type 2 grammars are characterized by rules that have a single non-terminal on the left-hand side and a sequence of terminals and non-terminals on the right-hand side. These grammars are used to generate context-free languages, which are languages that can be described by a context-free grammar.
Relation to Chomsky
Chomsky hierarchy is named after Noam Chomsky because he was instrumental in developing the theory of formal languages and grammars. He introduced the concept of context-free grammars as part of this theory, leading to the classification of grammars into four types based on their generative power.
Classification
Type 2 grammar, or context-free grammar, is called Type 2 because it falls in the second level of the Chomsky hierarchy. This hierarchy categorizes grammars based on their expressive power, with Type 2 being more powerful than Type 3 (regular grammar) but less powerful than Type 1 (context-sensitive grammar) and Type 0 (unrestricted grammar).
In conclusion, context-free grammar is named Type 2 grammar in the Chomsky hierarchy due to its position in the classification of formal grammars based on their generative power.
Chomsky hierarchy is a classification of formal grammars based on their generative power. It is named after Noam Chomsky, who introduced the concept in the 1950s. Chomsky hierarchy consists of four types of grammars, with Type 2 grammar being context-free grammar.
Type 2 Grammar
Context-free grammar is classified as Type 2 grammar in the Chomsky hierarchy. Type 2 grammars are characterized by rules that have a single non-terminal on the left-hand side and a sequence of terminals and non-terminals on the right-hand side. These grammars are used to generate context-free languages, which are languages that can be described by a context-free grammar.
Relation to Chomsky
Chomsky hierarchy is named after Noam Chomsky because he was instrumental in developing the theory of formal languages and grammars. He introduced the concept of context-free grammars as part of this theory, leading to the classification of grammars into four types based on their generative power.
Classification
Type 2 grammar, or context-free grammar, is called Type 2 because it falls in the second level of the Chomsky hierarchy. This hierarchy categorizes grammars based on their expressive power, with Type 2 being more powerful than Type 3 (regular grammar) but less powerful than Type 1 (context-sensitive grammar) and Type 0 (unrestricted grammar).
In conclusion, context-free grammar is named Type 2 grammar in the Chomsky hierarchy due to its position in the classification of formal grammars based on their generative power.
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