| 一种新的基于粒度重要度的三支决策模型 |
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| 引用本文： | 薛占熬,韩丹杰,吕敏杰,赵丽平.一种新的基于粒度重要度的三支决策模型[J].计算机科学,2019,46(2):236-241. |
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| 作者姓名： | 薛占熬 韩丹杰 吕敏杰 赵丽平 |
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| 作者单位： | 河南师范大学计算机与信息工程学院 河南新乡453007;"智慧商务与物联网技术"河南省工程实验室 河南新乡453007 |
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| 基金项目： | 本文受国家自然科学基金计划项目(61772176),河南省科技攻关项目(182102210078,2),河南省科技创新人才项目(184100510003),新乡市科技攻关计划项目(CXGG17002)资助 |
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| 摘 要： | 粒度重要度是多粒度粗糙集中的一项重要研究内容。针对现有粒度重要度只考虑单个粒度对决策的直接影响而忽略了其他粒度对决策综合影响的问题,结合多粒度粗糙集近似质量的概念,通过研究粒度重要度的构造方法,提出了一种新的多粒度间的粒度重要度的计算方法,并给出了基于该方法的粒度约简算法。同时,为减少冗余决策信息,将约简集与三支决策理论相结合,构建了基于粒度重要度的三支决策模型,给出了决策规则。最后通过实例证明,新的粒度约简算法可以获得具有更高区分度的数据,且缩小了延迟域范围,使最终决策更合理。
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| 关 键 词： | 多粒度粗糙集 粒度重要度 粒度约简 三支决策 |
| 收稿时间： | 2017/12/13 0:00:00 |
| 修稿时间： | 2018/3/18 0:00:00 |
New Three-way Decisions Model Based on Granularity Importance Degree |
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| XUE Zhan-ao,HAN Dan-jie,LV Min-jie and ZHAO Li-ping.New Three-way Decisions Model Based on Granularity Importance Degree[J].Computer Science,2019,46(2):236-241. |
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| Authors: | XUE Zhan-ao HAN Dan-jie LV Min-jie and ZHAO Li-ping |
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| Affiliation: | College of Computer and Information Engineering,Henan Normal University,Xinxiang,Henan 453007,China Engineering Lab of Henan Province for Intelligence Business & Internet of Things,Xinxiang,Henan 453007,China,College of Computer and Information Engineering,Henan Normal University,Xinxiang,Henan 453007,China Engineering Lab of Henan Province for Intelligence Business & Internet of Things,Xinxiang,Henan 453007,China,College of Computer and Information Engineering,Henan Normal University,Xinxiang,Henan 453007,China Engineering Lab of Henan Province for Intelligence Business & Internet of Things,Xinxiang,Henan 453007,China and College of Computer and Information Engineering,Henan Normal University,Xinxiang,Henan 453007,China Engineering Lab of Henan Province for Intelligence Business & Internet of Things,Xinxiang,Henan 453007,China |
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| Abstract: | Granularity importance degree is an important content of multi-granularity rough set.Now,the construction methods of granularity importance degree only consider the direct influence of single granularity on decision-making,ignoring the combined effect of other granularity on decision-making.Combining the concept of multi-granularity approximated quality,this paper studied the construction method of granularity importance degree,proposed a new granularity importance degree calcuation method among multiple granularities,and gave a granular structure reduction algorithm based on this method.Meanwhile,in order to reduce the redundant decision information,through combining reduction set and three-way decisions,this paper constructed the three-way decisions model based on granularity importance degree,and gave the decision rules in detail.Finally,the results of an example show that the proposed granular degree reduction algorithm can obtain the data with larger discrimination,and narrows the range of delay domain,making the final decision more reasonable. |
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| Keywords: | Multi-granularity rough set Granularity importance degree Granular structure reduction Three-way decisions |
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