计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
21期
68-73
,共6页
决策试行与评价实验室(DEMATEL)方法%语言评估标度%基本信度分配%DSmT组合规则%三角模糊数
決策試行與評價實驗室(DEMATEL)方法%語言評估標度%基本信度分配%DSmT組閤規則%三角模糊數
결책시행여평개실험실(DEMATEL)방법%어언평고표도%기본신도분배%DSmT조합규칙%삼각모호수
Decision Making Trial and Evaluation Laboratory(DEMATEL) method%language assessment scales%basic probability assignment%DSmT combination rule%triangular fuzzy number
原始DEMATEL方法及其改进方法，一方面存在因正规化影响矩阵的无穷次幂可能并不收敛而导致方法在某些情况下失效的问题，另一方面也存在因语言标度之间并不相互独立而不能使用Dempster规则对专家推断信息进行直接融合的问题。为了解决上述问题，以Lee和Tzeng提出的改进DEMATEL方法为研究对象，结合语言评估标度和证据理论中的基本信度分配函数构建了具有柔性表达优势的专家推断信息提取机理，通过引入DSmT组合规则提出了能够对所有专家推断信息进行有效集成的融合机理，并在此基础上给出了DEMATEL改进新方法的具体步骤，应用一个模拟案例分析了提出的方法更具科学性和普适性。
原始DEMATEL方法及其改進方法，一方麵存在因正規化影響矩陣的無窮次冪可能併不收斂而導緻方法在某些情況下失效的問題，另一方麵也存在因語言標度之間併不相互獨立而不能使用Dempster規則對專傢推斷信息進行直接融閤的問題。為瞭解決上述問題，以Lee和Tzeng提齣的改進DEMATEL方法為研究對象，結閤語言評估標度和證據理論中的基本信度分配函數構建瞭具有柔性錶達優勢的專傢推斷信息提取機理，通過引入DSmT組閤規則提齣瞭能夠對所有專傢推斷信息進行有效集成的融閤機理，併在此基礎上給齣瞭DEMATEL改進新方法的具體步驟，應用一箇模擬案例分析瞭提齣的方法更具科學性和普適性。
원시DEMATEL방법급기개진방법，일방면존재인정규화영향구진적무궁차멱가능병불수렴이도치방법재모사정황하실효적문제，령일방면야존재인어언표도지간병불상호독립이불능사용Dempster규칙대전가추단신식진행직접융합적문제。위료해결상술문제，이Lee화Tzeng제출적개진DEMATEL방법위연구대상，결합어언평고표도화증거이론중적기본신도분배함수구건료구유유성표체우세적전가추단신식제취궤리，통과인입DSmT조합규칙제출료능구대소유전가추단신식진행유효집성적융합궤리，병재차기출상급출료DEMATEL개진신방법적구체보취，응용일개모의안례분석료제출적방법경구과학성화보괄성。
There exist two problems in original and improved DEMATEL methods. One is methods may fail under some circumstances for the infinite power of a normalized relation matrix may not converge, and the other is the Dempster rules cannot be used to make direct fusion of experts’inferences due to the independence of language scales. To solve the above two problems, the experts’inferences extraction mechanism with the advantage of soft expression is constructed based on language evaluation scales and the basic belief distribution function by taking the DEMATEL improvement method proposed by Lee and Tzeng as the research subject. By introducing DSmT combination rule, the fusion mechanism is suggested which can be used to make effective integration of all experts’inferences, based on which, the procedures of the new method for improvement of DEMATEL are suggested. The analysis of a simulation case is made to prove the pro-posed method is more of science and universality.
