Partial attribute reduction approaches to relation systems and their applications
作者：
Highlights：
• Propose the concept of the X-lower reduction for relation systems.
• Study the lower approximation reduction for relation decision systems.
• Study the upper approximation reduction for relation decision systems.
• Positive region reduction for decision tables is a special case of our reductions.
摘要
•Propose the concept of the X-lower reduction for relation systems.•Study the lower approximation reduction for relation decision systems.•Study the upper approximation reduction for relation decision systems.•Positive region reduction for decision tables is a special case of our reductions.
论文关键词：Discernibility matrix,Lower approximation reduction,Upper approximation reduction,Relational decision system,Relation system,X-lower approximation reduction
论文评审过程：Received 25 January 2017, Revised 10 October 2017, Accepted 12 October 2017, Available online 17 October 2017, Version of Record 13 November 2017.
论文官网地址：https://doi.org/10.1016/j.knosys.2017.10.014
