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A fuzzyrough approach for the maintenance of distributed casebased reasoning systems


This paper proposes a fuzzyrough method of selecting cases for such a distributed CBR system, i.e., a thin client system (a smaller casebase with rules) connected to a comparatively more powerful server system (the entire original casebase).


The methodology is mainly based on the idea that an original casebase can be transformed into a smaller casebase together with a group of fuzzy adaptation rules, which could be generated using our fuzzyrough approach.


Thirdly, fuzzy adaptation rules are mined for each concept using a fuzzyrough method.


Correspondingly, a data mining algorithm called the fuzzyrough algorithm is developed to deal with the FEA simulation data by combining fuzzy set theory and rough set theory.

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 A retrospective analysis was performed in patients with ulccrativc colitis (UC) confirmed endoscopically and histologically. Daring past 13 years, 112 patients was diagnosed as UC, which accounted for 3.01% of all colonscopy. The most Prominent clinical symptoms were diarrhea (95. 5%) and abdominal pain (60.7% ). The toxic megacolon and the extracolonic manifestation were few seen in UC patients. The erosions or ulcers, focal hyperemias, and friability occurred in 96. 4% , 86. 6% and 63. 4% of patients, rcspectivelly,... A retrospective analysis was performed in patients with ulccrativc colitis (UC) confirmed endoscopically and histologically. Daring past 13 years, 112 patients was diagnosed as UC, which accounted for 3.01% of all colonscopy. The most Prominent clinical symptoms were diarrhea (95. 5%) and abdominal pain (60.7% ). The toxic megacolon and the extracolonic manifestation were few seen in UC patients. The erosions or ulcers, focal hyperemias, and friability occurred in 96. 4% , 86. 6% and 63. 4% of patients, rcspectivelly, during colonoscopy. Compared to UC that inflammatory mucosal changes were in volved beyond the rectum and sigmoid colon, the distal UC (ulccrative proetitis or proctosigmoiditis) symptoms are mild, and the complications and mucosal dysplasia are scarcely seen.  回顾性分析过去13年经结肠镜检查并结合临床、活检符合溃疡性结肠炎(UC)诊断的112例结肠炎病例,占结肠镜检总数的3.01％。症状以腹泻(95.5％％)和腹痛(60.7％)为主,中毒性巨结肠和肠外表现少见。肠镜下糜烂和溃疡最多见(96.4％),其次是充血水肿、其它有质脆易出血、血管网模糊、粗糙颗粒感和假息肉。与病变范围广泛者相比,病变限制在直肠及乙状结肠的UC的病情轻、合并症和非典型增生少见。  Based on the structural property of Fuzzy Rough Sets which a pair of lower and upper approximations are Fuzzy sets, and the different concepts of cut sets and decomposition theorems of Fuzzy sets are used to define the concepts of cut sets of Fuzzy Rough Sets and relevant decomposition theorems of Fuzzy Rough sets. Through the different decomposition theorems of Fuzzy sets, the different decomposition theorems of Fuzzy Rough Sets are proved. The relationship between Fuzzy Rough sets and normal sets is well explained... Based on the structural property of Fuzzy Rough Sets which a pair of lower and upper approximations are Fuzzy sets, and the different concepts of cut sets and decomposition theorems of Fuzzy sets are used to define the concepts of cut sets of Fuzzy Rough Sets and relevant decomposition theorems of Fuzzy Rough sets. Through the different decomposition theorems of Fuzzy sets, the different decomposition theorems of Fuzzy Rough Sets are proved. The relationship between Fuzzy Rough sets and normal sets is well explained by the decomposition theorem of Fuzzy Rough Sets. The decomposition theorem presented in this paper is very import and well applied both in theory and practice .  根据模糊粗糙集(FR集)中上下近似都是模糊集合的构造性质,利用模糊集不同截集定义和分解定理,给出了模糊粗糙集(FR集)截集定义和相应的分解定理,并证明了模糊粗糙集(FR集)集的分解定理,分解定理揭示了模糊粗糙集和普通集之间的关系,在理论和应用中发挥着重要的作用。  The concept of fuzzy sets was introduced by Zadeh in 1965 and subsequently the notion of rough sets was introduced by Pawlak in 1982,the combination of them formed fuzzy rough sets and rough fuzzy sets, which have been followed with much attention by international academic circles. The paper discusses the fuzzy degree of fuzzy rough sets and rough fuzzy sets, which is a measure of fuzzy level.  196 5年 ,Zadeh提出了 Fuzzy集理论 ,1982年 ,Z.Pawlak提出 Rough集理论。将二者结合而形成的模糊粗糙集 (FR集 )及粗糙模糊集 (RF集 )近年来越来越受到国际学术界的关注。本文所研究的 FR集及 RF集的模糊度 ,是对 FR集及 RF集模糊程度的一种度量。进而引进了相应的明可夫斯基距离 ,明可夫斯基模糊度和 Shannon模糊度   << 更多相关文摘 
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