本文对汉语短语结构的定界歧义做了全面考察,从歧义格式的组成成分,歧义对外造成的影响,模式歧义和实例歧义的对应关系三方面考察了短语结构定界歧义的不同类型,并对汉语短语结构定界歧义的不同类型进行了初步统计。希望能将计算机处理汉语时碰到的短语结构边界歧义问题进一步清晰化,供理论研究者和应用系统开发人员参考。

This paper analyses the ambiguity of determining boundaries of Chinese phrases in automatic parsing by computer. The type of ambiguity can be classified from three different perspectives. As viewed from component of ambiguous structures , ambiguous phrases can be classified into two kinds : one including terminal symbols , the other not including terminal symbols but only non - terminal symbols. As viewed f rom the influence of ambiguity , ambiguous phrases can also be classified into two kinds : self - confined ambiguous phrases and non - self - confined ambiguous phrases. The influence of the former ambiguity is mainly inside the ambiguous phrases. The influence of the latter ambiguity is outside of the ambiguous phrases. As viewed from differentiated types of relation between type and token , ambiguous phrases can be classified into three kinds : the true - ambiguity , the quasi - ambiguity , and the pseudo - ambiguity. Furthermore , the distribution of these types of ambiguous phrases in Modern Chinese is also surveyed depending on the above analysis and a set of rules used for a Chinese - English Machine Translation system. The authors hope that the analysis on various types of ambiguities mentioned above conduces to solve the problem of phrase structure ambiguities in Chinese.