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一种基于粗集的格值信息系统的知识约简方法
作者单位:昆明理工大学理学院 云南昆明650093
摘    要:粗糙集理论是一种建立在分类的基础上处理模糊和不确定知识的数学工具,正越来越被人们所关注。首先介绍了格值信息系统的相关知识,并以偏序关系为基础得到了一种新的关系:优势关系,给出了约简和核心,简化了概念的分类特征,也给出了上近似、下近似及约简的判定定理和辨识矩阵的概念,最后通过具体的例子说明这种约简方法是有效的。

关 键 词:粗糙集    格值信息系统  知识约简  协调集

A Knowledge Reduction Method Based on Rough Sets and Lattice- valued Information Systems
Authors:HUANG Jia- zeng  CAI Xiang- yun
Abstract:Rough set theory is an established on the basis of the classification deal with the ambiguity and uncertainty of knowledge mathe- matical tool, more and more people are concerned. First introduced the lattice- value information systems knowledge, and to partial order for the basis has been A new relationship: advantage, given the reduction and the core, the concept of simplifying the classification of fea- tures, it is also given on the approximation, and the approximate reduction of matrix determined theorem and the concept of identification, the final adoption of specific Reduction of examples to illustrate this method is effective.
Keywords:rough sets  lattice  lattice- valued information system  knowledge reduction  consistent set
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