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91.
一种可用于生产效率评价的灰靶评估算法 总被引:1,自引:0,他引:1
本文在分析和比较了DEA和灰靶评估两种方法之后,给出一种可用于生产效率评价的灰靶评估算法。该算法由于运用了DEA方法中的“生产效率”概念,弥补了灰靶评估算法不能对不同的被评价单元进行效率评价的不足,从而拓宽了灰靶评估算法的应用背景。文章最后给出实例分析。 相似文献
92.
Mahdi Zarghami Ferenc Szidarovszky Reza Ardakanian 《Fuzzy Optimization and Decision Making》2008,7(1):1-15
All realistic Multi-Criteria Decision Making (MCDM) problems face various kinds of uncertainty. Since the evaluations of alternatives
with respect to the criteria are uncertain they will be assumed to have stochastic nature. To obtain the uncertain optimism
degree of the decision maker fuzzy linguistic quantifiers will be used. Then a new approach for fuzzy-stochastic modeling
of MCDM problems will be introduced by merging the stochastic and fuzzy approaches into the OWA operator. The results of the
new approach, entitled FSOWA, give the expected value and the variance of the combined goodness measure for each alternative.
Robust decision depends on the combined goodness measures of alternatives and also on the variations of these measures under
uncertainty. In order to combine these two characteristics a composite goodness measure will be defined. The theoretical results
will be illustrated in a watershed management problem. By using this measure will give more sensitive decisions to the stakeholders
whose optimism degrees are different than that of the decision maker. FSOWA can be used for robust decision making on the
competitive alternatives under uncertainty. 相似文献
93.
V. V. Podinovski 《Computational Mathematics and Mathematical Physics》2008,48(11):1981-1998
Multicriteria decision-making problems under bounded (above, below, or from both sides) continuous or discrete criteria are considered. Methods for comparing variants of solutions using the information accumulated in the form of interval estimates of replacing the values of some criteria by the values of others (such replacements are called tradeoffs; in other words, this can be considered as a compensation of the deterioration of some criteria by improving the values of others) are proposed along with simple consistency conditions of such information. The issue of constructing the set of nondominated variants is discussed. 相似文献
94.
We establish the optimality of structured replacement policies for a periodically inspected system that fails silently whenever the cumulative number of shocks, or the magnitude of a single shock it has received, exceeds a corresponding threshold. Shocks arrive according to a Markov-modulated Poisson process which represents the (controllable or uncontrollable) environment. 相似文献
95.
G. Mastroeni 《Journal of Optimization Theory and Applications》2001,109(3):539-555
We consider the variational inequality that represents the first-order optimality condition for the class of variational problems with the property that the integrand in the objective functional does not depend on the derivative of the unknown function. This allows the development of an iterative method for solving the statistical decision problem of testing simple hypotheses. 相似文献
96.
97.
本文总结了现有技术效率的主要测算方法,借鉴定向技术距离函数思想,结合DEA思路,提出了一种新的用于技术效率指数测算的模型,并进一步探讨了如何识别决策单元的技术有效性和如何改进非技术有效决策单元的问题.着重分析了该技术效率指数模型与L型技术效率指数的关系,指出该模型是L型技术效率指数模型的一般形式. 相似文献
98.
This work proposes a Progressive Assisted Sorting Algorithm (PASA) based on a multicriteria evaluation ELECTRE-type method.
The purpose of the PASA is to aid a decision maker to progressively sort a set of alternatives into a set of categories, which
we considered are ordered (ordinal sorting), following a consistency principle. We consider the principle that if an alternative
outranks (is as good as) a second one, then it must belong to the same category or to a better category. The set of alternatives
already sorted by the decision maker will implicitly define the categories, and will constrain the range of categories where
other alternatives may be sorted. We show how the same idea may be used in an aggregation/disaggregation approach, considering
some parameters of ELECTRE are not fixed a priori, but are constrained only by the examples provided. In this context, we
establish a “convex-shape property” stating that the range of possible categories for an alternative is always an interval
of categories. A discussion contrasting this approach with ELECTRE TRI is included in the conclusions. 相似文献
99.
100.