机构地区: 广西师范大学数学科学学院数学与计算机科学系
出 处: 《计算机科学》 1998年第5期81-83,共3页
摘 要: 近几年,国外对模糊数据库进行了研究,在能源决策及信息检索方面己有所应用。如日本和美国己把模糊数据库用于能源决策、医疗会诊等许多领域,显示了其重要的实用价值。在国内,许多学者也对一模糊数据库进行了有效的研究。 Based on semantic distance of fuzzy attribute and the grey relational algebra theroy,the concept of grey dependency is presented in this paper. By using the concept in fuzzy database, we may obtain a method to judge whether two fuzzy data are approximately the same in their semantics. And it plays an important role in the retrieval of fuzzy database. We also discuss its applications on the fuzzy selection and fuzzy natural join.
领 域: [自动化与计算机技术] [自动化与计算机技术]