一种新的广义多粒度优势关系粗糙集  

A new generalized multigranulation rough set based on dominance relation

作　　者：张明[1] 孙佳伟[1] 程科[1] 徐维艳[2] 潘磊[1] 

机构地区：[1]江苏科技大学计算机科学与工程学院,江苏镇江212003 [2]江苏科技大学数理学院,江苏镇江212003

出　　处：《江苏科技大学学报（自然科学版）》2015年第6期560-566,共7页Journal of Jiangsu University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(61100116);江苏省自然科学基金资助项目(BK2011492;BK20130472);江苏省科技支撑项目(BE2014692)

摘　　要：通过分析乐观和悲观多粒度优势关系粗糙集下近似的决策过程,提出了一种新的广义多粒度优势关系粗糙集,并将乐观多粒度优势关系粗糙集和悲观多粒度优势关系粗糙集统一到广义多粒度优势粗糙集模型中.然后,比较了这3种多粒度优势关系粗糙集的下近似、上近似和度量因子之间的关系.最后讨论了广义多粒度优势关系粗糙集的一些基本性质.On the base of the lower approximation sets,the decision-making process is analyzed by the optimism and pessimism multigranulation dominance-based rough sets. A new generalized multigranulation dominancebased rough set is put forward,and the rough sets model of the optimism and pessimism multigranulation dominance-based rough set will be unified to it. Then,the relationship of the lower approximation,the upper approximation and the measurement factors are compared among the generalized multigranulation dominance-based rough set,the optimism multigranulation rough set and pessimism multigranulation rough set. Finally some basic properties of the generalized multigranulation dominance-based rough set are discussed.

关 键 词：粗糙集 多粒度 优势关系 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]