A Calibrated Group Decision Process

Elena Rokou () and Konstantinos Kirytopoulos
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Elena Rokou: National Technical University of Athens
Konstantinos Kirytopoulos: National Technical University of Athens

Group Decision and Negotiation, 2014, vol. 23, issue 6, No 8, 1369-1384

Abstract: Abstract In practice most organisational decisions are made by groups that bring into the problem multiple perspectives, both complementary and contradictory. When having a group of decision makers, usually individuals’ preferences are either led to consensus or are aggregated with the use of some function like the median, the arithmetic or geometric mean. We focus in the second case, where individual’s preferences need to be aggregated. Our approach is based on the fact that when two decision makers are asked to give their preference between a pair of criteria using a specific scale, it is possible that they will give slightly different answers, even when they actually have the same opinion. This difference will not affect the case of a single decision maker, as it will be consistent throughout the whole process. However, it can affect a group decision when the values will be used as an input for the aggregation function. A novel approach is presented that enhances group decision making through a group calibration process. The proposed process adjusts individuals’ preferences based on their answers on a set of standardized questions prior to the aggregation phase. The method focuses The whole concept is applied to the group analytical network process method and it is illustrated through a telecommunications project case. The decision under examination concerns the selection of the right place for deploying a new telecom service of a multinational-based telecommunications company where a group of geographically dispersed decision makers form an ad-hoc virtual team in order to select the location for a new technical support centre.

Keywords: Group decision and negotiations; Analytical network process; Multiple criteria analysis (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/s10726-013-9374-2

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