| 加权信息系统及其知识划分粒度表示 |
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| 引用本文： | 王道林,;刘继勇. 加权信息系统及其知识划分粒度表示[J]. 泰山学院学报, 2014, 0(6): 59-63 |
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| 作者姓名： | 王道林, 刘继勇 |
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| 作者单位： | [1]泰山学院信息科学技术学院,山东泰安271021; [2]泰安第一中学,山东泰安271000 |
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| 摘 要： | 为了体现事物之间的差异,对信息系统的对象给予一定的权重,给出了加权信息系统的概念,定义了加权信息系统中知识的划分粒度表示方法,讨论了划分粒度的性质,并证明了知识的代数表示和划分粒度表示的等价性.
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| 关 键 词： | 粗糙集 加权信息系统 划分粒度 属性约简 分类能力 |
Weighted Information System and Representation for Its Knowledge Partition Granularity |
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| Affiliation: | WANG Dao - lin , LIU Ji - yong (1. School of Information Science and Technology, Taishan University, Taihn, 271021; 2. Tai＇an No. 1 Middle School, Taihn,271000, China) |
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| Abstract: | In order to reflect the differences, this paper proposes the weighted information system based on giving the weight for the objects of the information system, and presents the representation method for its knowledge partition granularity. Moreover, the paper discusses the properties for the partition granularity, and proves the equivalence of algebraic representation and partition granularity representation for knowledge. |
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| Keywords: | rough set weighted information system partition granularity attributes reduction classification capability |
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