计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (12): 142-144.

• 数据库、信号与信息处理 • 上一篇    下一篇

时空变化知识表达模型

徐泮林1,朱华吉2,张英俊3   

  1. 1.山东科技大学 地科学院,山东 青岛 266510
    2.国家农业信息化工程技术研究中心,北京 100097
    3.胜利设计院 勘察公司,山东 东营 257000
  • 收稿日期:2007-10-18 修回日期:2007-12-29 出版日期:2008-04-21 发布日期:2008-04-21
  • 通讯作者: 徐泮林

Knowledge representation model of spatio-temporal change

XU Pan-lin1,ZHU Hua-ji2,ZHANG Ying-jun3   

  1. 1.Shandong University of Science and Technology,Qingdao,Shandong 266510,China
    2.National Engineering Research Center for Information Technology in Agriculture,Beijing 100097,China
    3.Shengli Design Institute of Shengli Petroleum,Dongying,Shandong 257000,China
  • Received:2007-10-18 Revised:2007-12-29 Online:2008-04-21 Published:2008-04-21
  • Contact: XU Pan-lin

摘要: 为了消除时空变化表达过程中语义的不一致性,将时空变化前后的实体集、变化类型、规则作为变化表达的3个基本元素,利用数据+知识包的形式建立了基于3个基本元素的时空变化表达的三元模型CAR,即变化类型C、变化属性集A和变化判定规则集R,其中规则集中的规则利用IF-THEN方式描述,利用属性集A和规则集的运算判定C,从而解决了目前时空变化表达方法存在的无法表达变化原因的缺陷,而且规则表达便于计算机程序实现。

关键词: 时空变化, 知识表达, 三元模型, 语义

Abstract: In order to eliminate the semantic heterogeneity in representing process of the spatio-temporal changes,a three-tuple model CAR for representing the spatio-temporal change is proposed based on the geographical object set before change and the geographical object set after change,change type and rules.In this model,the C denotes the change type;A denotes the attribute set;R denotes the judging rules of change type.The rule is described by the IF-THEN expressions.By the operations between R and A,the C is distinguished.This model overcomes the limitations of current methods.And more,the rules in this model can be easy realized in computer program.

Key words: spatio-temporal change, knowledge representation, three-tuple model, semantics