Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (36): 37-39.DOI: 10.3778/j.issn.1002-8331.2010.36.010

• 研究、探讨 • Previous Articles     Next Articles

Truth degree function on set of formulas in propositional logic system Ln

MA Li-na1,LIU Shuo2,WANG Guo-jun1   

  1. 1.College of Mathematics and Information Science,Shaanxi Normal University,Xi’an 710062,China
    2.Faculty of Biomedical Engineering,The Fourth Military Medical University,Xi’an 710032,China
  • Received:2010-07-20 Revised:2010-10-19 Online:2010-12-21 Published:2010-12-21
  • Contact: MA Li-na

命题逻辑系统Ln中公式集上的真度函数

马丽娜1,刘 烁2,王国俊1   

  1. 1.陕西师范大学 数学与信息科学学院,西安 710062
    2.第四军医大学 生物医学工程系,西安 710032
  • 通讯作者: 马丽娜

Abstract: The purpose of this paper is to give an axiomatic definition of truth degree function on the set of formulas in n-valued Lukasiewicz propositional logic system and some properties of truth degree function are proved.The conceptions of similarity degree among formulas and a pseudo-metric on the set of formulas are defined by means of the concept of truth degree function.The logic metric space is built and a possible framework for approximate reasoning from the syntactical view is proposed.

Key words: truth degree function, similarity degree, pseudo-metric, logic metric space

摘要: n值Lukasiewicz命题逻辑系统中引入了公式集FS)上真度函数的公理化定义,给出了真度函数的若干重要性质,利用真度函数从形式上定义了相似度和伪距离,建立了逻辑度量空间,为从语构的角度展开近似推理提供了一种可能的框架。

关键词: 真度函数, 相似度, 伪距离, 逻辑度量空间

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