汉语语义选择限制知识的自动获取研究

Research on Chinese Selectional Preferences Acquisition

语义选择限制刻画了谓语对论元的语义选择倾向,是一种重要的词汇语义知识,对自然语言的句法、语义分析具有重要作用。该文研究汉语语义选择限制知识的自动获取,提出基于HowNet和基于LDA(Latent Dirichlet Allocation)的两种知识获取方法,对方法进行了实验对比与分析。实验表明,前者所获取的知识可理解性更好,后者所获取的知识应用效果更好。两种方法具有很好的互补性,我们提出了一个二者的融合方案。

Selectional preference describes the semantic preference of the predicate for its arguments. It is an important lexical knowledge which can be applied to syntactic and semantic analysis of natural languages. This paper studies the automatic acquisition of Chinese selectional preferences and proposes a HowNet based method and a LDA （Latent Dirichlet Allocation） based method. A comparative study shows that the former method acquires better understood knowledge while the latter achieves better performance in application. The two methods are complementary and may＇oe combineal in process.