五邑大学学报(自然科学版)
五邑大學學報(自然科學版)
오읍대학학보(자연과학판)
JOURNAL OF WUYI UNIVERSITY(NATURAL SCIENCE EDITION)
2014年
2期
19-24
,共6页
司彦飞%刘超%吴明芬
司彥飛%劉超%吳明芬
사언비%류초%오명분
决策粗糙集模型%广义近似空间%(α,β)-上近似%(α,β)-下近似
決策粗糙集模型%廣義近似空間%(α,β)-上近似%(α,β)-下近似
결책조조집모형%엄의근사공간%(α,β)-상근사%(α,β)-하근사
decision-theoretic rough set models%generalized approximation spaces%(α,β)-upper approximation%(α,β)-lower approximation
在决策粗糙集的基础上,对论域进行了拓展,构造了双论域上的决策粗糙集模型。依据条件概率构造了双论域上决策粗糙集的上、下近似集,并得到相应的正域、负域和边界域的定义;讨论了双论域上决策粗糙集模型的一些基本性质;通过实例给出了双论域上决策粗糙集模型在医疗诊断系统中的应用。
在決策粗糙集的基礎上,對論域進行瞭拓展,構造瞭雙論域上的決策粗糙集模型。依據條件概率構造瞭雙論域上決策粗糙集的上、下近似集,併得到相應的正域、負域和邊界域的定義;討論瞭雙論域上決策粗糙集模型的一些基本性質;通過實例給齣瞭雙論域上決策粗糙集模型在醫療診斷繫統中的應用。
재결책조조집적기출상,대론역진행료탁전,구조료쌍론역상적결책조조집모형。의거조건개솔구조료쌍론역상결책조조집적상、하근사집,병득도상응적정역、부역화변계역적정의;토론료쌍론역상결책조조집모형적일사기본성질;통과실례급출료쌍론역상결책조조집모형재의료진단계통중적응용。
Based on the decision-theoretic rough set model, the universe of the model is extended, and a decision-theoretic rough set model based on double universes is defined. First, the upper (lower) approximation sets of the model are constructed according to conditional probability. Second, three disjoint regions called positive region, boundary region and negative region are defined. Then, some basic properties are discussed. Finally, a practical example that adopts the double-universe model in diagnostic systems is provided.