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针对大型机械设备安全评价中评价指标客观权重随加权方法的选择而变化的问题,提出一种基于熵和评价对象离差最大化的客观综合赋权模型。该模型将不同客观赋权法得到的权重向量视为指标真实客观权重向量的离散随机变量,将权重系数定义为权重系数的概率函数的随机变量,考虑不同客观加权方法得到的权向量的不确定性和实际目标权向量的一致性要求,基于熵函数获取权系数的约束方程;针对权重与对象评价值的关系,将评价对象离差的最大化作为上述权重系数约束函数的补充,构建客观综合赋权模型,使获取的指标客观权重仅与其携带的原始信息相关,极大的提高了大型机械设备安全评价的客观性。算例验证了该模型的合理性和有效性。 相似文献
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基于改进灰色关联度分析的供应商评价方法 总被引:6,自引:1,他引:6
供应商选择是一个包含定性因素和定量因素的多目标评价问题,很难用精确的方法来求解。本文针对供应商选择时存在信息不充分现象,提出了利用改进的灰色关联度分析法进行供应商选择的评价方法。该方法在用熵权法确定权重的基础上,充分利用了信息的灰色特性。通过算例分析,该方法计算过程简单方便,结果直观可靠,是多因子综合评价较好的方法。 相似文献
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协同商品设计中,供应商的选择至关重要.首先建立一套具有一定灵活性的综合评价指标体系,为不同的企业提供不同的需求选择;然后运用熵权系数法确定评价指标的权重;再通过TOPSIS法对供应商进行优劣排序.最后通过一实例进行分析. 相似文献
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基于改进熵权法确定工程材料评价指标的客观权重 总被引:1,自引:0,他引:1
以0.3作为指标权重的上限,对传统熵权法进行改进,建立了改进熵权法模型;以燃气涡轮叶片选材为例,选择18种典型的变形合金和铸造合金作为候选材料,确定5种评价指标,根据所建模型得到评价指标的权重,继而采用ITOPSIS法对18种候选材料进行综合评价。结果表明:选出的最佳燃气涡轮叶片材料为Udimet700变形合金,与实际应用选择结果一致,说明改进熵权法确定的客观权重合理、可行;改进熵权法避免了指标权重超大的现象,能够充分体现各指标的重要程度,与客观实际更加贴近,值得推广应用。 相似文献
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利用可拓学物元理论和层次分析法以及熵权法有机结合,提出了电能质量综合评估的又一新方法,即在介绍电能质量背景和概念的同时,用可拓学中的物元理论对电能质量进行物元分析,建立3种物元模型,结合可拓学中的相关函数理论与计算,形成关联值矩阵;然后用所研究的层次分析法、熵权法等2种方法计算得到各指标权重和最终的评估结果。通过实例证明,新方法能使电能质量综合评估结果更客观、准确、合理。 相似文献
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Süleyman Çakır 《The International Journal of Advanced Manufacturing Technology》2017,88(5-8):1345-1361
Supplier selection is a crucial multi-criteria decision-making (MCDM) problem which requires a tradeoff between multiple criteria denoting vagueness and imprecision with the involvement of a group of experts. Fuzzy MCDM methods allow for modeling the decision processes involving imprecise and subjective information expressed as linguistic variables or fuzzy numbers by decision-makers. In this paper, considering information fusion between criteria and linguistic terms, a robust supplier selection algorithm based on the hybrid use of a modified fuzzy Analytic Hierarchical Process (FAHP) and generalized Choquet fuzzy integral (GCFI) methods is proposed. The FAHP is employed in order to obtain importance weights of the evaluation criteria and then the GCFI is used to achieve the overall performance values of supplier alternatives. The suggested methodology has been conducted in a real case application for supplier selection problem in a steel-producing company operating in Turkey. We also showed the robustness of the devised methodology through a sensitivity analysis and compared the obtained results with other MCDM methods. Consequently, it is concluded that the proposed integrated approach can effectively handle supplier selection and other MCDM problems especially when there are interdependent sub-criteria in a complex hierarchy of evaluation criteria. 相似文献
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基于供应链的汽车协配件供应商选择方法研究 总被引:6,自引:0,他引:6
针对供应链中汽车协配件供应商的评价和选择 ,分别从供应商的技术开发能力 ,产品的质量及质量保证能力 ,价格的合理性 ,供货能力、服务水平等方面构建了两层评价指标 ,同时考虑到有关数据和指标难免带有一定的模糊性和主观性 ,因此应用模糊综合评判方法建立了供应商选择的模糊多目标多层次综合模型 ,并以MFD载重车公司为例进行了实证研究。 相似文献
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设备质量是影响冶金企业生产及其运作的和粗糙理论,将大量数据进行模糊聚类,在信息熵知识的基础上确定了各个评价准则的权重分配,从而综合评价供应商,为供应商的选择提供了理论依据. 相似文献
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Supplier selection problem in global supply chains by AHP and ANP approaches under fuzzy environment 总被引:2,自引:2,他引:0
G. Nilay Yücenur Özalp Vayvay Nihan Çetin Demirel 《The International Journal of Advanced Manufacturing Technology》2011,56(5-8):823-833
In this paper, we proposed a model for selecting of the global supplier by analytical hierarchy process (AHP) and analytical network process (ANP) based on linguistic variable weight. The fuzzy AHP and fuzzy ANP methods are suggested to be a good tool for solving our proposed multiple-criteria decision-making problem. Fuzzy AHP-based methodology evaluated different decision criteria such as service quality, cost, risk factors, and supplier’s characteristics involved in the selection of the best supplier in a global supply chain and ANP represented an effective tool for providing a suitable solution for managers. The linguistic levels of comparisons produced by the experts with triangular fuzzy numbers for constructing fuzzy pairwise comparison matrices. The implementation of the system was demonstrated by a problem having four stages of hierarchy which contains four criteria and 28 attributes. In conclusion, the fuzzy AHP and fuzzy ANP results were compared. 相似文献
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Seyed Mohammad Hashemian Majid Behzadian Reza Samizadeh Joshua Ignatius 《The International Journal of Advanced Manufacturing Technology》2014,73(5-8):1105-1117
The quality and delivery performance of a typical company depends largely on the capability of its suppliers. It is therefore important for a company to evaluate the performance of its existing suppliers. However, the problem of supplier evaluation is rather complex when a group of decision makers responsible for these suppliers are geographically dispersed. Evaluating decisions requiring the elicitation of vague and imprecise linguistic information expressed in fuzzy terms. For this purpose, a hybrid fuzzy group decision-making approach for supplier evaluation is proposed, integrating the fuzzy analytic hierarchy process (F-AHP) and the fuzzy preference-ranking-organization-method-for-enrichment-of-evaluation (PROMETHEE) group decision support system (F-PROMETHEE GDSS) method. F-AHP is used to determine the weight of multiple criteria while F-PROMETHEE GDSS is applied for the final ranking of suppliers from a group decision viewpoint. The approach advances the supplier evaluation context in two aspects. First, it treats each decision maker uniquely in terms of the preference function and threshold levels. Second, it provides rapid communication between teams through video conferencing. The hybrid approach is used to evaluate the suppliers of a dairy company. 相似文献
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石材开采设备优化决策是改善企业矿山开采过程清洁性的有效途径之一.论文着重以节约资源、保护环境为目标,建立了一种面向清洁生产的矿山设备决策目标分解参考体系;对矿山设备的选择问题进行了三级分类和数学描述;针对石材矿山开采具有代表性的分离工序设备决策问题,建立了多目标优化决策模型,并将熵权法和层次分析法结合,应用模糊数学理论对上述模型进行求解.通过实例分析验证所提出模型的可行性和有效性. 相似文献
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