Deriving Relative Weights from Difference Comparisons
The previous two chapters analyzed the case of eliciting information from the decision maker(s) by means of a number of pairwise comparisons. However, in other related domains such information may be elicited in terms of difference pairwise comparisons. That is, instead of asking questions of the type “How many times is item A more important than item B under criterion X?”, now such questions look like “How much is item A more important than item B under criterion X?”.
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