摘要
针对带"*"值的不完备信息系统,在对扩充粗糙集模型分析的基础上,对属性集合进行分类,引进了相似度的概念,在此基础上提出基于相似度的带有参数的改进二元关系,并讨论了基于该二元关系的粗集扩充模型,新模型更具灵活性和准确性。最后,实例分析进一步验证了改进二元关系扩充模型对处理不完备信息系统更加合理有效。
Aiming at the incomplete information system with '*',based on analysis of some extended rough set model,this paper classifies attribute set.The conception of similarity degree is introduced.A new binary relation is proposed which is based on one parameter and similarity degree,and the rough set model is based on this new relation.The extended model is more flexible and accurate.In the end,by an example,it is verified that the new extension is more reasonable and effective.
出处
《中国民航大学学报》
CAS
2012年第3期56-61,共6页
Journal of Civil Aviation University of China
基金
国家自然科学基金项目(60672178)
中国民航大学科研基金项目(2010kys01)
关键词
不完备信息系统
粗糙集
容差关系
相似度
改进二元关系
incomplete information system
rough set
tolerance relation
similarity degree
improved binary relation
