Context-Free Grammars - Chomsky Normal Form - Hampden ...
Context-Free Grammars - Chomsky Normal Form - Hampden ...
Context-Free Grammars - Chomsky Normal Form - Hampden ...
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Eliminate All Unit Rules<strong>Context</strong>-<strong>Free</strong><strong>Grammars</strong> -<strong>Chomsky</strong><strong>Normal</strong> <strong>Form</strong>Robb T.KoetherHomeworkReview<strong>Chomsky</strong><strong>Normal</strong> <strong>Form</strong>New start symbolEliminate all ε-rulesEliminate all unitrulesProof (Eliminate all unit rules).If A → B and B → u are rules, then add the rule A → u.Eliminate the rule A → B.Eliminate all mixedrulesEliminate all longrulesDerivations inCNFTheMembershipProblem forCFGsAssignment