摘要
为了使计算机获得语境中包含的知识,必须对语境进行形式化描述。文中采用演绎的方法,以概念树"法治"为例,根据概念层次网络理论(HNC)世界知识的描述,设计了法治活动的领域句类表示式,将法治领域世界知识融入其中,从而使计算机获得先验知识。然后,结合真实语料分析演示了领域句类表示式对句群分析和语境单元萃取的作用,分析结果证明了领域句类表示式的适用性。最后,结合语境形式化的相关理论,讨论了语境的可计算性和语境知识表示方法,表明领域句类是计算机获取和使用语境知识的有效方法。
Context formalization has been regarded as one of the key issues in order to provide the world knowledge to computer.Taken concept tree ＂rule by law＂ for example,the domain sentences category expression is designed in accordance with HNC world knowledge description and deductive method,by which the computer will obtain priori knowledge about the domain.Then,based on the real corpus,the effect of domain sentence category to sentences group analysis and context formalization is demonstrated,by which the possibility of context formalization is verified.Finally,the calculability and expression method of context are discussed on the basis of formalization.
出处
《计算机技术与发展》
2010年第7期1-4,8,共5页
Computer Technology and Development
基金
国家科技支撑计划项目(2007BAH05B01)
关键词
领域句类知识
句群处理
语境形式化
HNC理论
自然语言理解
知识表示
sentence category of domain knowledge
sentences group processing
context formalization
HNC theory
natural language understanding
knowledge expression
