| 基于AE-概念格的决策形式背景属性约简 |
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| 引用本文： | 陈雪,魏玲,钱婷. 基于AE-概念格的决策形式背景属性约简[J]. 山东大学学报(理学版), 2017, 52(12): 95-103. DOI: 10.6040/j.issn.1671-9352.0.2017.190 |
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| 作者姓名： | 陈雪 魏玲 钱婷 |
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| 作者单位： | 1.西北大学数学学院, 陕西 西安 710127;2.西安石油大学理学院, 陕西 西安 710065 |
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| 基金项目： | 国家自然科学基金资助项目(11371014) |
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| 摘 要： | 针对AE-概念格, 在属性三支协调下, 提出了保持非冗余规则信息不丢失的属性约简理论。 首先讨论了子背景下的相关性质, 其次定义了属性三支协调决策形式背景中的非冗余规则协调集, 并获得了该协调集的判定定理, 最后给出利用差别矩阵和差别函数得到相应约简的方法。
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| 关 键 词： | 决策形式背景 三支概念格 规则 属性三支协调 属性约简 |
| 收稿时间： | 2017-04-25 |
Attribute reduction in formal decision contexts based on AE-concept lattices |
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| CHEN Xue,WEI Ling,QIAN Ting. Attribute reduction in formal decision contexts based on AE-concept lattices[J]. Journal of Shandong University, 2017, 52(12): 95-103. DOI: 10.6040/j.issn.1671-9352.0.2017.190 |
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| Authors: | CHEN Xue WEI Ling QIAN Ting |
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| Affiliation: | 1. School of Mathematics, Northwest University, Xian 710127, Shaanxi, China;2. College of Science, Xian Shiyou University, Xian 710065, Shaanxi, China |
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| Abstract: | This paper proposes the attribute reduction in the attribute three-way consistent formal decision context, which preserves irredundant rules information without loss for AE-concept lattices. For this purpose, the related properties in subcontext of a formal context are discussed. Then based on them, the set of irredundant rules consistent in the attribute three-way consistent formal decision context is defined, and the corresponding judgment theorems of the set of irredundant rules consistent is obtained. Finally, the methods to find these reductions by discernibility matrix and discernibility function are presented. |
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| Keywords: | formal decision context rules three-way concept lattices attribute reduction attribute three-way consistence |
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