基于语法规则的使用Chomsky上下文无关文法产生的句子虽合乎语法规则但并不一定合乎语义常理.文中提出一种可以产生合理的自然语言句子的产生系统{TI,N,BI,CI,S,FI,PI},其中,I是指定的自然语言.该系统建立在语义语言理论上,使用Chomsky短语文法.系统的关键技术是引入了语义单元技术、类型参量,类型参量的作用不仅体现在语义单元中而且还体现在句树、事物树和函数集中.语义单元和类型参量共同作用能有效的对产生的句子进行语义约束使得生成的句子合理.
The sentences produced by Chomsky's Context-free Grammar are legitimate,conform with syntax rules,but not reasonable.The sentences produced by {TI,N,BI,CI,S,FI,PI} producting system proposed in this paper are legitimate and reasonable,where I is a specify natural language.It is based on semantic unit theory and Phrase-structure Grammar.The key of reasonableness is based on semantic-units theory,to introduce the category-parameter system,which is in the set B-RISU,in the set C-treeI,and in the set FI.The semantic-units and category-parameters make the sentences reasonable.