中文非投射语义依存现象分析研究

汉语是一种语序灵活的语言,句子变式很多,基于传统依存树的投射现象还不能很好解决某些句式的语义理解问题。文章以10000个句子的汉语语义依存图库为基础,验证并明确了汉语非投射现象的客观存在性,考察了汉语句子中存在的非投射现象,并从语言学和句子深层语义理解的角度对非投射现象进行了归纳和解释。文章总结了7类出现非投射现象的情况,包括小句宾语句、比较句、主谓谓语句、紧缩复句、代词、动补谓语句以及注释短语或复句。这对于自动语义依存标注有重要的指导作用。

Analysis of the Non-projective Phenomenon in Chinese Semantic Dependency Graph

Chinese is flexible in the word order, with different sentences for the same meaning. Projective phenomenon, based on the traditional dependency tree, cannot solve some Chinese phenomenon perfectly. This paper, demonstrates and analyses the existence of non-projective phenomenon in Chinese from a semantic dependency graph database with 10 thousand Chinese sentences. To give an induction and explanation in term of linguistics and deep understanding of semantics, the paper summarizes 7 situations in which the non-projective phenomenon exists, including sentences with sentences used as object, comparative sentences, sentences with sentences used as predicate, sentences with two or more events, pronouns, verb and complement phrases used as predicate and note phrases or sentences. This is of substantial significance to the automatic semantic dependency tagging.