【摘要】 针对空缺数据项较多的不完整决策表,通过计算条件模式对决策类的隶属度、条件模式的相容类包含于决策类的程度来研究条件模式与决策类的从属关系。对这两种方法进行了分析和对比实验,表明了二者的一致性。将新元素的条件属性模式与已有条件模式进行匹配,可以得出新元素应属于的分类。更多还原

【Abstract】 This paper focuses on the relation between the value-patterns of condition attributes and decision classes in a decision table with many missing values.On one hand,a decision class should be regarded as a fuzzy set when con-cerning value-patterns,which cannot be certainly partitioned into any class.On the other hand,tolerance class of each value-pattern is a fuzzy set of objects,and a tolerance class may be included in a decision class at some degree.The insight into two methods is given in this paper,and an example is employed to demonstrate that these methods are consistent.By matching the new condition attributes value-pattern with existing ones,a new element can be classified to a class which has the most similar pattern to the new one’s.更多还原