计算机应用研究2013，Vol.30Issue(7)：2010-2013,4.DOI:10.3969/j.issn.1001-3695.2013.07.023
属性值变化时变精度粗糙集模型中近似集动态更新的矩阵方法研究
Research on matrix-based incremental method for updating approximations under variation of attribute values in variable precision rough set
摘要
Abstract
In order to study the effective methods of dynamic knowledge update of information system from the view of matrix,this paper proposed a matrix-based incremental updating method for the lower and upper approximations of a concept in variable precision rough set while the attribute values evolves over time.Then it designed the corresponding algorithms.Furthermore,it developed the programs for the proposed matrix-based incremental algorithm of a concept and the matrix-based non-incremental algorithms on MATLAB.Finally,the performance test of two kinds of algorithms carried out on UCI datasets.The result of the performance test demonstrates the feasibility,conciseness and validity of the proposed matrix-based incremental method for updating approximations.关键词
变精度粗糙集模型/上、下近似集/增量式更新/矩阵Key words
variable precision rough set model/lower and upper approximations/incremental update/matrix分类
信息技术与安全科学引用本文复制引用
王磊,洪志全,万旎..属性值变化时变精度粗糙集模型中近似集动态更新的矩阵方法研究[J].计算机应用研究,2013,30(7):2010-2013,4.基金项目
江西省自然科学基金资助项目(2011ZBAB201005) （2011ZBAB201005）
江西省科技支撑计划项目(20111BBE50008):江西省教育厅科技项目(GJJ13760) （20111BBE50008）
