摘要
人称代词的消解是自然语言处理中十分重要的问题 .人称代词消解 ,就是确定人称代词与先行语之间的相互关系 ,从而明确人称代词究竟指代什么对象 .现有的许多应用系统 ,如文本摘要、信息抽取等采取了从文本中直接抽取句子的做法 ,而结果可能会含有某些无先行语的人称代词 ,使理解变得非常困难 .人称代词消解无疑可以解决类似的问题 .该文主要结合句类基本知识 ,根据人称代词所在语义块中的语义角色和人称代词对应的先行语可能的语义角色 ,给出了消解人称代词的基本规则 ;同时 ,作者也从句法的角度 ,结合局部焦点法给出了优选性规则 .
Sentences category (SC) based resolution tactics of Chinese pronominal anaphora is presented. The semantic role of pronoun and potential objects is analyzed, and antecedent is chosen from these objects according to the semantic relation between them and pronoun. SC is a semantic category of sentences within HNC (Hierarchical Network of Concept) Pattern. According to the HNC theory, every sentence can be mapped into one and only SC and the number of SC in Natural Language is determinate; every SC consists of definite primary semantic chunk and indefinite secondary semantic chunk, and there exist conceptual constraints between primary semantic chunks in a sentence, as well as between primary semantic chunk and parts of secondary semantic chunks, In order to resolve anaphora, constraint rules and preference rules are given in this paper, which are related to the above conceptual constraint, and four kinds of anaphora relations will be discussed as follow: (1) in one semantic chunk; (2) between two primary semantic chunks; (3) primary semantic chunk and secondary semantic chunk; (4) between two semantic chunks in different sentences.
出处
《计算机学报》
EI
CSCD
北大核心
2001年第2期136-143,共8页
Chinese Journal of Computers
基金
国家"九七三"项目基金! (G19980 30 5 0 6 )
武汉"青年科技晨光计划"资助!(995 0 0 40 91G)资助
