一种新的扩展模糊概念数据模型  

A New Extended Fuzzy Conceptual Data Model

作　　者：秦艳友[1] 赵法信[1] 

机构地区：[1]通化师范学院

出　　处：《计算机科学》2007年第8期196-198,222,共4页Computer Science

摘　　要：为了对现实世界中存在的不精确、不确定的信息进行建模,学者们提出了各种不同的扩展关系数据模型。基于可能性理论,本文对概念数据模型IFO的不同层次在模糊信息环境下进行了扩展,提出了一种新的模糊IFO数据模型FIFO,该模型能够有效地表达和处理概念数据建模层次中的模糊数据。文章重点讨论了FIFO中对象和关系(主要是ISA关系)的模糊性,并给出了FIFO模型的各个层次所对应的图形表达。In order to model the real world with imprecise and uncertain information, various extended relational data models are proposed. Based on possibility theory, different levels of fuzziness are introduced into conceptual data model IFO and then a new fuzzy IF（） model, denoted as FIFO, is proposed. The model can effectively represent and process fuzzy data at conceptual data modeling level. The paper concentrates on the fuzzification of objects and relationships in the FIFO, specially on that of ISA relationships, and the corresponding graphical representations of the different levels in FIFO are given.

关 键 词：模糊集 可能性理论 数据建模 IFO模型 FIFO模型 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]