决策集值系统中的知识约简
Knowledge reduction in decision set-valued systems
方逢祺 1吴伟志2
作者信息
- 1. 浙江海洋大学信息工程学院,浙江 舟山 316022
- 2. 浙江海洋大学信息工程学院,浙江 舟山 316022;浙江省海洋大数据挖掘与应用重点实验室(浙江海洋大学),浙江舟山 316022
- 折叠
摘要
针对决策为集合值的数据集的知识约简问题,定义了决策集值系统、确定性决策集值系统和倾向性决策集值系统等几类决策系统的概念.对比了决策集值系统与相类似的几类信息系统的区别,明确了决策集值系统的相关特点.结合三支决策方法,定义了决策集值系统上的单值约简与多值约简的概念,并给出了在确定性决策集值系统上计算约简的方法.结果表明,该方法在确定性决策集值系统上能有效提取信息.
Abstract
To solve the problem of knowledge reduction in data sets with a set-valued decision,several types of decision systems such as decision set-valued systems,certainty decision set-valued systems and propensity decision set-valued systems are first defined.A comparative study is then discussed on decision set-valued systems and several relevant types of information systems,and characteristics of decision set-valued systems are clarified.Finally,combined with the three-way decision method,notions of single-valued reducts and multi-valued reducts in decision set-valued systems are proposed and a method for the computation of reducts in decision set-valued systems is explored.The results show that the method can effectively extract information on certainty decision set-valued systems.
关键词
粒计算/信息系统/决策集值系统/三支决策Key words
granular computing/information systems/decision set-valued systems/three-way decision引用本文复制引用
基金项目
国家自然科学基金(12371466)
国家自然科学基金(61976194)
国家自然科学基金(62076221)
出版年
2024
NETL
NSTL
万方数据