基于模糊集的不精确时态关系建模  

Imprecise Temporal Relationship Modeling Based on Fuzzy Sets

作　　者：邓立国[1] 马宗民[1] 张刚[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2007年第10期1462-1464,1476,共4页Journal of Northeastern University(Natural Science)

基　　金：教育部新世纪优秀人才支持计划项目(NCET-05-0288)

摘　　要：基于模糊集理论,建立了一种扩展Allen时态关系模糊时态区间模型.在经典时态关系的基础上,讨论了模糊时态区间关系,提出了时间点的模糊时态序列概念,并定义了模糊时态关系属性,同时用模糊时态序列定义了模糊时态区间的边界关系.最后结合时序测度公式对13种模糊时态定性关系给出了精确的表达.能精确表达模糊事件的精确和不精确关系,也为模糊推理提供了理论基础.Based on the theory of fuzzy sets, an expansion of Allen＇s fuzzy temporal interval model for tempoal interval is derived, and the fuzzy relation between temporal intervals is discussed in view of classical tense relations. Then, a concept of time point in fuzzy temporal sequence is proposed with a fuzzy definition given to the tense relation attributes. In addition, the boundary relations of fuzzy temporal intervals are defined with fuzzy temporal sequence. Combining the sequence with the measure formula of temporal sequence, an accurate expression is given qualitatively to 13 fuzzy tenses, which can express both the precise and imprecise relationship of fuzzy events , and provide a theoretical basis for fuzzy reasoning.

关 键 词：时态区间 不确定 模糊集 时态推理 时态关系 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]