【摘要】 利用Rough集方法进行数据库中信息挖掘时,因为相同的记录表示的是同样的决策信息,可以将它消去,但由此得到的决策规则可能是片面的。文章提出了一种带有权重的决策算法,该方法利用记录出现的频率作为权重系数,导出了带有全重的决策算法,该方法计算简便、实用,可提高最终决策算法的可靠性。更多还原

【Abstract】 When mining database for information by rough set method,since the same records make same contribution to decision,generally only one of them remains while others can be cancelled out ,which in a sense causes the loss of information,and the resulting decision rules may be one-sided.In this paper a weighted decision algorithm is present ,which makes use of frequency of the record as weight.This algorithm is computationally simple and efficiently enhances the decision reliability.更多还原