摘要
在模糊理论的基础上,提出了将权重概念引入数据库模糊查询中,使用户对查询中各个属性的相对重视程度得以体现。为每条记录提供了一个匹配度,按匹配度的降序输出结果,方便用户选择。权重和匹配度都是语言变量[7],其取值为语言值形式,更加贴近自然。
The concept of weights is used in fuzzy queries to relational database based on theory of fuzzy set, which shows the relative importance users paying to different attributes in query clauses. The records satisfying queries are output in the decrease of matching degrees, so users can select what they want best. Weights and matching degrees here are linguistic variables, whose values are linguistic terms. So the queries become more flexible.
出处
《计算机应用研究》
CSCD
北大核心
2005年第6期73-75,共3页
Application Research of Computers
基金
江苏省科技发展计划重点资助项目(BR2004012)
