【摘要】 讨论了不完备信息系统中的知识发现问题.带有未知数据的不完备信息系统可以看成集值信息系统.由此提出了不完备信息系统的2种约简方法即概率误差分布约简和平均概率误差约简,以及相应的约简算法.基于约简提出了规则的定义和对象x知识发现的新方法.更多还原

【Abstract】 This paper deals with knowledge discovering in incomplete information systems. An incomplete information system with unknown date can be regard as a set-valued system. Then the author present two reduction methods,probability er ror reduction and average probability error reduction in an incomplete informati on system.It is given that reduction algorithm correspondingly. It is proved tha t the definition of the rule based in reduction and present the method of knowle dge discovering of object x.更多还原