南京理工大学学报（自然科学版）Issue(4)：496-500,5.
新型变精度多粒化粗糙集模型
New rough set model:a variable precision multigranulation approach
摘要
Abstract
The variable precision optimistic multigranulation rough set model is loose while the variable precision pessimistic multigranulation rough set model is strict. To solve this problem,this paper proposes a new variable precision multigranulation rough set model,which is called adjustable variable precision multigranulation rough set. It introduces a threshold to control the number of attributes,which satisfy the variable precision constraint condition. This mechanism makes the model more flexibile. This paper shows the properties of this model and compares the model with classical variable precision multigranulation model. By theoretical analyses,this paper observes that,the new variable precision multigranulation rough set model not only inherits the properties of classical variable multigranulation rough set, but also can degenerate to classical variable multigranulation rough set with some limitations. The research shows that, the model proposed here is a powerful expansion of the classical multigranulation rough set in real world application.关键词
变精度/多粒化/可协调/粗糙集/阈值/泛化/乐观粗糙集/悲观粗糙集Key words
variable precision/multigranulation/adjustablity/rough set/threshold/generalization/optimistic rough sets/pessimistic rough sets分类
信息技术与安全科学引用本文复制引用
闫敏伦..新型变精度多粒化粗糙集模型[J].南京理工大学学报（自然科学版）,2014,(4):496-500,5.基金项目
国家自然科学基金(61100116) （61100116）
江苏省自然科学基金(BK2011492) （BK2011492）
江苏省教育科学“十二五”规划课题(D/2013/03/076) （D/2013/03/076）
