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一种多值决策属性的决策系统的离散化算法 被引量:1
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作者 陈昊 杨俊安 +1 位作者 王岩 庄镇泉 《小型微型计算机系统》 CSCD 北大核心 2010年第10期1989-1992,共4页
决策系统中连续属性的离散化,即实型属性空间向整型属性空间的映射,它是对决策表中属性约简的第一步.针对多值决策属性的决策信息系统,提出一种新的属性离散化算法.首先根据决策属性的不同,将条件属性集划分为不同的序列,对每两个序列... 决策系统中连续属性的离散化,即实型属性空间向整型属性空间的映射,它是对决策表中属性约简的第一步.针对多值决策属性的决策信息系统,提出一种新的属性离散化算法.首先根据决策属性的不同,将条件属性集划分为不同的序列,对每两个序列求取候选断点,最后,综合所有的候选断点即为所求的候选断点集合;然后在基于条件属性重要度和贪心算法的基础上提出一种确定结果断点子集的新启发式算法.实例验证了本文所提出的算法能够取得较理想的连续属性离散化结果. 展开更多
关键词 粗糙集 多值决策属性 离散化 候选断点 结果断点
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Synthetic security assessment for incomplete interval-valued information system 被引量:1
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作者 赵亮 Xue Zhi 《High Technology Letters》 EI CAS 2012年第2期160-166,共7页
In order to understand the security conditions of the incomplete interval-valued information system (IllS) and acquire the corresponding solution of security problems, this paper proposes a multi-attribute group dec... In order to understand the security conditions of the incomplete interval-valued information system (IllS) and acquire the corresponding solution of security problems, this paper proposes a multi-attribute group decision- making (MAGDM) security assessment method based on the technique for order performance by similarity to ideal solution (TOPSIS). For IllS with preference information, combining with dominance-based rough set approach (DRSA), the effect of incomplete interval-valued information on decision results is discussed. For the imprecise judgment matrices, the security attribute weight can be obtained using Gibbs sampling. A numerical example shows that the proposed method can acquire some valuable knowledge hidden in the incomplete interval-valued information. The effectiveness of the proposed method in the synthetic security assessment for IIIS is verified. 展开更多
关键词 security assessment incomplete interval-valued information system(IIIS) multi-attribute group decision-making(MAGDM) technique for order performance by similarity to ideal solution(TOPSIS) dominance- based rough set approach(DRSA) Gibbs sampling
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