基于Vague集的广义模糊关系数据模型

Generalized Fuzzy Relational Data Model Based on Vague Set

在现实世界中,许多数据常常是不完全的或模糊不清的,因此,扩充传统的关系模型来表示不精确、不完全和模糊数据已成为数据库领域的一个重要的研究方向。Vague集是模糊集概念的推广,它具有强大的处理不精确数据的能力,并为不精确、不完全和模糊知识的表示提供了一种有效的手段。该文在已有的模糊关系数据模型的基础上,提出了模糊关系数据库的一种基于Vague集的广义模糊关系数据模型VGFRDM。

In real world,many data are often incomplete or fuzzy,so extending traditional data model to express imprecise,incomplete and fuzzy data has become an important research direction in the field of database.The Vague set is the extension of fuzzy set.It has powerful abilities to deal with imprecise data,and provides an effective measure for the expression of the imprecise,incomplete and fuzzy data.This paper puts forward a Generalized Fuzzy Relational Data Model Based on Vague Set(VGFRDM)of fuzzy relational database,which is built on the existing fuzzy relational data model.