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单词 Chomsky normal form
释义
Chomsky normal form

Computer
  • A restricted type of context-free grammar, namely one in which each production has the form

    ABCorAd,
    i.e. each right-hand side consists of either two nonterminals or one terminal. Any context-free language is generated by such a grammar, except that derivation of the empty string, Λ‎, requires the additional production
    SΛ


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