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A context free language is called ambiguous if
- a)It has 2 or more than 2 left derivations for some terminal string ѡ є L (G)
- b)It has 1 or more than 2 left derivations for some terminal string ѡ є L (G)
- c)Both of the mentioned
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
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A context free language is called ambiguous ifa)It has 2 or more than ...
When two or more Left and right most derivative occur the grammar turn ambiguous .
Most Upvoted Answer
A context free language is called ambiguous ifa)It has 2 or more than ...
Explanation:
Ambiguity in Context-Free Languages:
Ambiguity in context-free languages occurs when a grammar can generate more than one parse tree for a particular string in the language. This means that there are multiple ways to derive the same string using the grammar.
Reasons for Ambiguity:
There are various reasons why a context-free language may be ambiguous:
- The grammar may have multiple production rules that can be applied to the same input.
- The grammar may allow for different interpretations of the same input.
- The grammar may have rules that lead to more than one valid derivation for a given string.
Identification of Ambiguity:
To identify ambiguity in a context-free language, we look for cases where there are multiple left derivations or parse trees for the same string.
- If there are 2 or more left derivations for a specific terminal string L(G), the language is considered ambiguous.
- Alternatively, if there is 1 or more than 2 left derivations for a terminal string L(G), the language is also ambiguous.
Conclusion:
In conclusion, a context-free language is deemed ambiguous if it possesses multiple left derivations for a particular string. This ambiguity can lead to issues in parsing and understanding the language, making it crucial to identify and address any ambiguities present in the grammar.
Ambiguity in Context-Free Languages:
Ambiguity in context-free languages occurs when a grammar can generate more than one parse tree for a particular string in the language. This means that there are multiple ways to derive the same string using the grammar.
Reasons for Ambiguity:
There are various reasons why a context-free language may be ambiguous:
- The grammar may have multiple production rules that can be applied to the same input.
- The grammar may allow for different interpretations of the same input.
- The grammar may have rules that lead to more than one valid derivation for a given string.
Identification of Ambiguity:
To identify ambiguity in a context-free language, we look for cases where there are multiple left derivations or parse trees for the same string.
- If there are 2 or more left derivations for a specific terminal string L(G), the language is considered ambiguous.
- Alternatively, if there is 1 or more than 2 left derivations for a terminal string L(G), the language is also ambiguous.
Conclusion:
In conclusion, a context-free language is deemed ambiguous if it possesses multiple left derivations for a particular string. This ambiguity can lead to issues in parsing and understanding the language, making it crucial to identify and address any ambiguities present in the grammar.
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A context free language is called ambiguous ifa)It has 2 or more than 2 left derivations for some terminal string ѡ є L (G)b)It has 1 or more than 2 left derivations for some terminal string ѡ є L (G)c)Both of the mentionedd)None of the mentionedCorrect answer is option 'C'. Can you explain this answer?
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