计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (30): 43-45.DOI: 10.3778/j.issn.1002-8331.2010.30.013

• 研究、探讨 • 上一篇    下一篇

描述逻辑系统UEVN中概念的包含关系

曹发生1,张 维2   

  1. 1.毕节学院 数学系 逻辑、语言与认知研究中心,贵州 毕节 551700
    2.黔南民族师范学院 数学系,贵州 都匀 558000
  • 收稿日期:2010-04-14 修回日期:2010-08-23 出版日期:2010-10-21 发布日期:2010-10-21
  • 通讯作者: 曹发生

Research on concept subsumption in description logic UEVN

CAO Fa-sheng1,ZHANG Wei2   

  1. 1.Center of Logic,Language and Cognition,Department of Mathematics,Bijie University,Bijie,Guizhou 551700,China
    2.Department of Mathematics,Qiannan Normal University for Nationalities,Duyun,Guizhou 558000,China
  • Received:2010-04-14 Revised:2010-08-23 Online:2010-10-21 Published:2010-10-21
  • Contact: CAO Fa-sheng

摘要: 描述逻辑中的非标准推理是目前研究者们所关注的焦点问题,它主要包括:最具体概念、最小公共包含、匹配问题及概念的重写等。过去人们主要研究那些不含数量限制的描述逻辑系统,该文研究的是描述逻辑系统UEVN中的一种重要的非标准推理,它同时含有了并、存在约束量词、全称约束量词和数字限制。利用定义UEVN中概念的描述树及描述树之间的同态关系,给出了概念之间包含关系的充要条件。

关键词: 描述逻辑, 非标准推理, 概念描述树

Abstract: Nonstandard inference in description logic is a main issue that researchers are focusing on,it mainly includes the most specific concept,the least common subsumer,matching,rewriting and so on.Previous work mainly concerntrates on kinds of description logic systems which don’t contain number restriction.This paper analyzes the least common subsumer in description logic UEVN which contains union,existential restriction,value restriction and number restriction at the same time.Firstly,the UEVN-concept description tree and the homomorphisms on description trees are defined,then the subsumption relationship is characterized between concepts by computing the homomorphisms between their description trees.

Key words: description logic, nonstandard inference, concept description tree

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