中文摘要：

给出了一个函数依赖概念的推广,提出了函数依赖作用域的概念,讨论并证明了作用域的性质,基于函数依赖的作用域提出了一种分类规则的挖掘算法,并用实例证明了该算法的有效性.

英文摘要：

This paper generalizes the definition of functional dependency. A concept of the active range of functional dependency was proposed, and its properties were discussed and proved. An algorithm for mining classification rule based on functional dependency was presented and its validity was proved with an exampl .