说明：  对粗糙集( Rough Set)理论中属性约简和值约简算法进行了研究，提出了一种新的基于粗糙集的值约简算法。实验表明，该算法所得 结果比目前通用的基于粗糙集的值约简算法更简化和有效，它可以应用到各种与值约简相关的实际问题中。
(This paper discusses the approaches for attribute reduction and value reduction based on rough set theory. Following that it puts forward a new algorithm for value reduction The experimental and performance studies show that the new algorithm has reached a better and briefer result than the algorithm being widely used at present. It can be applied to solve various practical problems on value reduction.)