计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (21): 175-178.DOI: 10.3778/j.issn.1002-8331.2009.21.051

• 理论科学研究 • 上一篇    下一篇

基于中介逻辑的模糊知识推理的搜索处理

王 岑,潘正华,程天笑   

  1. 江南大学 理学院,江苏 无锡 214000
  • 收稿日期:2009-05-05 修回日期:2009-06-09 出版日期:2009-07-21 发布日期:2009-07-21
  • 通讯作者: 王 岑

Searching method of fuzzy knowledge reasoning based on medium logic

WANG Cen,PAN Zheng-hua,CHENG Tian-xiao   

  1. School of Science,Jiangnan University,Wuxi,Jiangsu 214000,China
  • Received:2009-05-05 Revised:2009-06-09 Online:2009-07-21 Published:2009-07-21
  • Contact: WANG Cen

摘要: 中介逻辑是一种区分矛盾否定与对立否定、肯定一些对立知识间存在中介对象的逻辑系统。基于中介谓词逻辑描述模糊知识,合理修改与或图,将每一谓词表达式视为状态结点,把逻辑规则集合表示为状态搜索空间。在传统与或图搜索算法的基础上,修改启发函数,将模糊知识的推理问题转化为状态空间中的搜索问题,并给出了一种否定信息的处理方法。

关键词: 中介逻辑, 模糊知识表示, 状态空间, 与或图, 启发函数, 否定信息

Abstract: Medium logic is a kind of logic system which differentiates contradiction from opposition,and affirms that there exists medium between some opposite information.Based on medium predicate Logic,the paper represents fuzzy knowledge,modifies and-or graph with reason,regards every predication expression as state node to convert logic formulary into searching space.Then the heuristic function of traditional searching method of and-or graph is modified in order to treat fuzzy reasoning problem as problem of searching for the most reliable goal node.It also gives a kind of treatment method to manage negative information.

Key words: medium logic, fuzzy knowledge representation, state space, and-or graph, heuristic function, negative information