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p568475820

应助: (幼儿园)
在线:
虫号: 603815

[交流] 急用，谢谢虫友。

(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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1楼 2009-02-14 11:00:38

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DifficultFlying

铜虫 (小有名气)

应助: 0 (幼儿园)
金币: 35.4
帖子: 209
在线: 20.2小时
虫号: 462342
注册: 2007-11-19
性别: GG
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

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)，

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2楼2009-02-14 21:20:14

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