基于模糊集的模糊时态映射模型  

Fuzzy temporal mapping model based on fuzzy sets

作　　者：邓立国[1] 杨殊[1] 边丽英[1] 

机构地区：[1]沈阳师范大学软件学院

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第2期315-317,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：教育部新世纪优秀人才支持计划资助项目(NCET-05-0288)

摘　　要：为了使时态数据库对客观世界更符合实际抽象描述,提出了用模糊测度分析模糊时态数据的隶属度,基于模糊集理论建立了模糊时态映射模型,实现测度模糊值向离散时态区间的映射。建立的模糊时态关系模型进行传统概念扩展,对事件的模糊时态信息作测度分析,抽取和元组离散时间对应的事件模糊值,向离散时态区间作映射,在模糊时态数据库概念层使模糊数据和时态凸区间实现原子对应。该理论弥补了现有时态数据库不能处理模糊时态信息的缺陷,扩展了模糊时态数据库处理模糊事件的能力。In order to model the temporal database of the objective world in line with the actual description of the abstract, fuzzy membership of fuzzy temporal data is analysed by using fuzzy measurement. A fuzzy temporal mapping model of fuzzy set theory is established, and the model that we present in this paper realizes the mapping of fuzzy measure values to discrete temporal interval. The paper expands the conception of temporal database in modeling fuzzy temporal datum. Based on the analysis of measurement of fuzzy temporal information, extracting the fuzzy value corresponding to tuple discrete temporal interval, and these fuzzy value are mapped to discrete temporal interval, realizing the correspondence between temporal convex interval and fuzzy values at the fuzzy temporal database conception level. The theory compensates for the fuzzy temporal information deficiencies that the existing temporal database can not handle, and expands the ability the fuzzy temporal database to process the fuzzy events.

关 键 词：模糊时态 模糊集 时态数据库 模糊时态数据库 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]