摘要
针对覆盖粗糙集仅适用于单一数据类型的论域覆盖的问题,提出复合覆盖粗糙集模型。在研究邻域覆盖粗糙集、集值覆盖粗糙集、区间值覆盖粗糙集的基础上,在复合数据模型下,通过建立多种覆盖关系(邻域覆盖、集值覆盖、区间值覆盖等),提出复合覆盖粗糙集模型,并给出复合覆盖粗糙集相关概念及性质。该模型适用于多种数据类型(符号数据、区间数据、集合数据、数值数据等)的论域覆盖问题,通过实例说明了该模型在复合信息系统中的应用,进一步加深对复合覆盖粗糙集相关概念的理解。
Because the classical covering rough sets can only apply to single data type in the covering domain,compositecovering rough sets are presented.Firstly,based on the study of the neighborhood covering rough sets,the set-valued coveringrough sets and the interval-valued covering rough sets,composite covering rough sets are presented by establishinga variety of coverage relations,includes neighborhood covering relation,set-valued covering relation,the interval-valuedcovering relation,which are under the composite data model.The relevant concepts and properties are presented.Secondly,the model are applied to the domain covering problem of a variety of data types,for example symbol data,intervalvalueddata,set-valued data,number data etc.Finally,an example is given to illustrate the application of the model in compositeinformation system for further deep understanding of the related concepts in composite covering rough sets.
作者
赵静
蒋芸
ZHAO Jing;JIANG Yun(College of Computer Science and Engineering, Northwest Normal University, Lanzhou 730070, China)
出处
《计算机工程与应用》
CSCD
北大核心
2017年第12期128-132,共5页
Computer Engineering and Applications
基金
国家自然科学基金(No.61163036)
甘肃省高校研究生导师科研基金(No.1201-16)
2012年度甘肃省高校基本科研业务费专项资金项目
西北师范大学三期"知识与科技创新工程"科研骨干培育基金(No.nwnu-kjcxgc-03-67)
关键词
覆盖粗糙集
邻域覆盖粗糙集
集值覆盖粗糙集
区间值覆盖粗糙集
复合覆盖粗糙集
covering rough sets
neighborhood covering rough sets
set-valued covering rough sets
interval-valued covering rough sets
composite covering rough sets
