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(a) a data matrix consisting of objects (oil samples) and the criteria (measured oil variables)was analysedwith the use of MCDMDecision Lab 2000 software [45], (b) for each criterion, the user selected one of the six available preference functions for rank-ordering, and indicated whether higher or lower values were preferred i.e.maximised orminimized ranking, (c) a differ- encematrixwas then computed fromthe rawdata by subtraction in all possible combinations, and the preference functions were applied, (d) the global preference index was computed by sum- ming the preference values for each object, (e) positive and negative outranking flows were calculated (where the positive outranking flow, expressed how an object outranks all other objects and the negative outranking flowϕ−, indicated howother objects outrank the object), (f) pair-wise comparison of the out- ranking flows was performed for each alternative and partial ranking of the alternatives was obtained, (g) the net ranking flow, and complete ranking of the objects were computed i.e. the rank order was the most preferred object (highest ϕ value) to the least preferred one and (h) PROMETHEE results were then submitted to GAIA, which displayed them as a PC1 versus PC2 biplot with a decision axis, pi, which showed the quality of the decision. When pi is long, the best objects are in its direction and farthest away from the origin and vice versa. |
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DifficultFlying
铜虫 (小有名气)
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- 专业: 光学
涉及到数值计算方法，一些专业术语太专业和抽象了。翻了部分，供参考。
★ ★
p568475820(金币+2,VIP+0):谢谢了，虽然不太准确，但是很用心了。 2-15 09:55
p568475820(金币+2,VIP+0):谢谢了，虽然不太准确，但是很用心了。 2-15 09:55
| a）利用 MCDMDecision Lab 2000软件[45]分析目标（石油样本）数据矩阵和标准判据（测量的石油变量）；（b）对于每一个标准，用户可以选择六个可变参考函数中的一个进行秩排序，并明确是优先选择更高或更低秩，例如最高秩或者最低秩。（c）从原始数据中减去所有可能的组合，并应用参考函数，可以计算得到一个差分矩阵。（d）对每一个目标矩阵的优选值进行求和，计算出全局优选值。（五）计算正和负的outranking flows(正outranking flows表示为何一个目标矩阵的秩排序高于其它的，负outranking flows 表示为何其它的目标矩阵高于该目标矩阵)， |
2楼2009-02-14 21:20:14
