介绍了文法化简中消除无用符号和无用产生式的树型算法，并通过实例予以验证。

This paper introduces a new tree algorithm that is for deleting superfluous symbol and production in grammar, and gives a practical example to check the algorithm.

youdao

介绍了文法化简中消除无用符号和无用产生式的树型算法，并通过实例予以验证。

This paper introduces a new tree algorithm that is for deleting superfluous symbol and production in grammar, and gives a practical example to check the algorithm.

youdao