How do you know if a grammar is context-sensitive?
How do you know if a grammar is context-sensitive?
A grammar is context-free if left-hand sides of all productions contain exactly one non-terminal symbol. By definition, if one exists, then the language is context-free. An equivalent construct would be a pushdown automaton. It’s the same as DFA, but with a stack available.
Which model is accepted context-sensitive grammar?
Chomsky Classification of Grammars
| Grammar Type | Grammar Accepted | Automaton |
|---|---|---|
| Type 0 | Unrestricted grammar | Turing Machine |
| Type 1 | Context-sensitive grammar | Linear-bounded automaton |
| Type 2 | Context-free grammar | Pushdown automaton |
| Type 3 | Regular grammar | Finite state automaton |
How do you write a context-sensitive grammar?
The Context Sensitive Grammar is a formal grammar in which the left-hand sides and right-hand sides of any production rules may be surrounded by a context of terminal and non-terminal grammar. It is less general than Unrestricted Grammar and more general than Context Free Grammar.
Is CSL closed under Kleene?
Context sensitive languages are closed under union, intersection, complement, concatenation, kleene star, reversal. Proof for other closure properties There is a recursive language that is not context-sensitive.
Which of the following allows you to use context sensitive help?
Context-sensitive help can be implemented using tooltips, which either provide a terse description of a GUI widget or display a complete topic from the help file. Other commonly used ways to access context-sensitive help start by clicking a button. One way uses a per widget button that displays the help immediately.
Which one of the following production rule is correct for a context-sensitive grammar?
Solution: Context Sensitive Language or Type 1 or Linearly Bounded Non deterministic Language has the production rule where the production is context dependent i.e. aAb->agb.
What is context-sensitive communication?
A “Context-Dependent” Communicator has SYMBOLIC COMMUNICATION that is RELIABLE, but it is limited to particular CONTEXTS or PARTNERS. It means any communication in which something (e.g. a word, sign, picture, etc.)
Which is the best definition of a context sensitive grammar?
Context-sensitive grammar. A formal language that can be described by a context-sensitive grammar, or, equivalently, by a noncontracting grammar or a linear bounded automaton, is called a context-sensitive language. Some textbooks actually define CSGs as non-contracting, although this is not how Noam Chomsky defined them in 1959.
Why did Chomsky invent context sensitive grammar?
Chomsky introduced context-sensitive grammars as a way to describe the syntax of natural language where it is often the case that a word may or may not be appropriate in a certain place depending on the context.
What is contextual grammar?
A context-sensitive grammar (CSG) is a formal grammar in which the left-hand sides and right-hand sides of any production rules may be surrounded by a context of terminal and nonterminal symbols.
Is the Kuroda normal form a context sensitive grammar?
“Weakly equivalent” here means that the two grammars generate the same language. The normal form will not in general be context-sensitive, but will be a noncontracting grammar. The Kuroda normal form is an actual normal form for non-contracting grammars. This section needs additional citations for verification.
