客观赋权法及其在工程选材中的适用性研究  

Study on Applicability of Objective Weighted Model in the Selection of Engineering Materials

作　　者：陈奎[1] 张天云[2] 胡玉霞[1] 郑小平[1] 

机构地区：[1]兰州城市学院机械监测与故障诊断研究所,兰州730070 [2]兰州城市学院信息网络中心,兰州730070

出　　处：《材料导报》2013年第9期104-106,111,共4页Materials Reports

基　　金：国家自然科学基金(11164012);教育部科学技术研究重点项目(210230);甘肃省自然科学基金(1010RJZA168);甘肃省教育厅基金(1111B-03)

摘　　要：根据熵法和标准离差法这两种典型的客观赋权法的赋权原理,分析了客观赋权法的特点及不足。分别构建熵法和标准离差法的赋权模型,并以低温存储罐选材为例,研究客观赋权法在工程选材中的适用性。结果表明,虽然客观赋权法得到的权重排除了人为因素的干扰,具有客观、公正性,但其不代表指标实际意义上的重要性,而是各指标评价值提供有用信息量的度量。在评价人员对材料了解较少时,客观赋权法是一种较好的权重确定途径。Characteristic and shortcoming of objective weighted model are analyzed according to weight determi- nation theory of entropy method and standard deviation method respectively. Taking the selection of storage pot mate- rial under low temperature working condition as an example, the applicability of objective weighted model in the selec- tion of engineering materials is researched according to constructing model of weight determination for entropy method and standard deviation method respectively. The results show that, although objective weights are impersonal and just, they are the measurements of useful information capacity afforded by the values of evaluation indices, not actual weightiness of evaluation indices. When the knowledge of material is destitute, objective weighted model is a useful method to determine the weights of evaluation indices for engineering materials.

关 键 词：工程材料 评价指标 权重 熵法 标准离差法 

分 类 号：TB3[一般工业技术—材料科学与工程]