“是”字句是现代汉语中比较特殊的、又是比较常见的一种句子形式,对其主语部分和宾语部分的自动界定和标注将有助于机器翻译、信息检索、信息提取等的研究。本文通过考察语料中“是”字句的句法表现,总结、提取了“是”字句的自动标注规则,对《人民日报》一个月语料中的“是”字句进行了自动标注。实验结果表明,对没有逗号的句子,标注正确率可达到99%以上;对有逗号的句子,标注正确率为89%。

“是”sentence is a special and often used sentence in mandarin Chinese. This paper examines“是”sentences in the corpus ,and presents some rules for automatic bracketing the subject and object of them. The result is agreeable :the precision is over 99% in the sentences containing no comma and 89% in the sentences containing comma.