文章基本信息

标题：On Granularity in Information Systems Based on Binary Relation
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作者：Weihua Xu ; Shihu Liu ; Xiaoyan Zhang 等
期刊名称：Intelligent Information Management
印刷版ISSN：2150-8194
电子版ISSN：2150-8208
出版年度：2011
卷号：3
期号：3
页码：75-86
DOI：10.4236/iim.2011.33010
出版社：Scientific Research Publishing
摘要：In this paper, some important issues of granularity are discussed mainly in information systems (ISs) based on binary relation. Firstly, the vector representation method of knowledge granules is proposed in an infor-mation system based on binary relation to eliminate limitations of set representation method. Secondly, operators among knowledge granularity are introduced and some important properties of them are studied carefully. Thirdly, distance between two knowledge granules is established and granular space is constructed based on it. Fourthly, axiomatic definition of knowledge granularity is investigated, and one can find that some existed knowledge granularities are special cases under the definition. In addition, as an application of knowledge granular space, an example is employed to validate some results in our work.
关键词：Binary Relation; Granular Space; Information System; Rough Set