A Consensus Gap Indicator and Its Application to Group Decision Making

Fujun Hou ()
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Fujun Hou: Beijing Institute of Technology

Group Decision and Negotiation, 2015, vol. 24, issue 3, No 3, 415-428

Abstract: Abstract A prametric is introduced for describing the consensus gap in group decision making problem and a consensus formation procedure is proposed. It is assumed that each individual’s ties-permitted ordinal ranking constitutes a partition of the alternative set, and that the alternatives in a tie are ranked together occupying consecutive positions. A preference sequence matrix is thus constructed with entries indicating the alternatives’ potential positions by the expert’s preferences. To elicit the group ranking, a certain prametric, namely, the consensus gap indicator is defined for measuring the consensus gap between two preference sequences with ties. Some properties are elaborated, among which an inequality is used to get the potential ties-permitted compromise ranking. An illustrative example is also included.

Keywords: Group decision making; Ordinal ranking; Consensus gap indicator; Prametric (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (6)

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DOI: 10.1007/s10726-014-9396-4

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