Proposes the context - free grammar model for GEP.

对基因表达式编程建立了上下文无关文法模型.

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Proves that the presentation power of GEP and the context - free grammar with one none - terminal are equivalent.

指出基因表达式编程和仅含有单个非终结符的上下文无关文法在描述能力上是等价的.

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Common phrase structure grammar ( chomsky hierarchy ), which is the most commonly used context - free grammar ( CFG ).

一般用文法grammar) 来刻画.常见的是短语结构文法 ( chomskyhierarchy ), 其中最常用的是上下文无关文法 ( CFG ).

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