第29卷第5期辽宁工程技术大学学报(自然科学版) 2010年10月 Journal ofLiaoning Technical University(Natural Science) Oct. 2010 文章编号:(2010)05-0887-04 程度上近似算子与变精度下近似算子的差运算的算法与分析熊方L2,张贤勇3,莫智文3,詹惠琴2 (,四川成都610100;,四川成都610054; ,四川成都610068) 摘要:为了构建程度近似算子与变精度近似算子的新运算,探讨其计算算法,提出了程度上近似算子与变精度下近似算子的差运算,提出了宏观算法和微观算法,进行了算法分析与比较,得到了微观算法具有算法空间优势的结论。最后用医疗实例对宏观算法和微观算法进行了分析与说明。该研究对程度粗糙集模型与变精度粗糙集模型的结合与应用具有意义。关键词:人工智能;粗糙集理论;逻辑运算;近似算子;程度粗糙集;变精度粗糙集中图分类号:11P 18 文献标识码:A Algorithms andanalysis ofdifferenceoperation ofgrade upper approximation operatorand variableprecision lowerapproximation operator XIONG Fan91”.ZHANG Xianyonff’.MO Huiqin'。( ofInformation Engineering,Sichuan Tianyi University,Chengdu 610J00,China; ofAutomation,University ofElectronic Science and Technology ofChina,,Chengdu 610054, China; ofMathematics and Software Science,.Sichuan Normal University,Chengdu 610068.,China) Abstract:Grade approximation operator and variable precision approximation operator ale important rough set order to construct new operation of grade approximation operator and variable precision approximation operator,and investigate itsalgorithm,a difference operation ofgrade upper approximation operator and variable precision lower approximation operator proposed inthis addition,the macroscopic algorithm andmicro
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