多粒度粗糙集模型中属性子集序列的构造方法

摘要

Concerning the construction problem of attribute subset sequence in multi-granulation rough set model,a construction method based on the distance between attributes was proposed.Firstly,the concept of the distance between attributes in information system was introduced.Secondly,the quantitative calculation formula was given,which was then used to compute the distance between the attributes.Finally,according to the distance between the attributes,the neighborhood attribute set of each attribute was obtained,and then the attribute subset sequence was constructed.The experimental results show that the proposed method is more accurate for each object class of the experiment than the random constructional attribute subset sequence.%针对多粒度粗糙集模型中属性子集序列的构造问题, 提出一种基于属性间距离的构造方法.该方法首先引入信息系统中属性间距离的概念, 并给出距离的定量计算公式;然后根据公式来计算出各个属性之间的距离;最后根据属性之间距离的远近, 得到每个属性的邻域属性集, 从而构造出一个属性子集序列.实验结果表明, 与随机构造的属性子集序列相比, 该方法构造的序列对于实验的每个对象类具有更高的近似精度.