Teamwork Self Reflection - Organizational Behaviour

Essay by alooosh November 2014

download word file, 34 pages 0.0

Decision Aiding

A new method for group decision support based on ELECTRE

III methodology

Juan Carlos Leyva-L�oopez, Eduardo Fern�aandez-Gonz�aalez *

Facultad de Ingenier�ııa, Universidad Aut�oonoma de Sinaloa, Ciudad Universitaria, Calzada de Las Americas S/N, Culiac�aan, Sinaloa,

Mexico, CP 80040, Mexico

Received 9 November 1999; accepted 9 January 2002


Group decision is usually understood as the reduction of different individual preferences on a given set to a single

collective preference. At present, there are few approaches which solve the group ranking problem with multiple criteria

in a widely acceptable way. Often, they rest on a poor heuristic which makes a decision about consensus ranking

difficult to support. This paper presents an extension of the ELECTRE III multicriteria outranking methodology to

assist a group of decision makers with different value systems to achieve a consensus on a set of possible alternatives.

Our proposal starts with N individual rankings and N corresponding valued preference functions, and uses the natural

heuristic provided by ELECTRE methodology for obtaining a fuzzy binary relation representing the collective pre-

ference. A comparison of this method with PROMETHEE II for group decision is carried out. We found that, in this

particular application, the proposed heuristic based on majority rules combined with concessions to significant mi-

norities, performs relatively better than a compensatory scheme based on a net flow weighted sum function.

� 2002 Elsevier Science B.V. All rights reserved.

Keywords: Multicriteria analysis; Group decision; Outranking methods; ELECTRE III; Genetic algorithms

1. Introduction

People make a group decision (intra-organiza-

tional or inter-organizational) when they face a

common problem and they are all interested in its

solution. This problem may be the purchase of a

car, the acquisition of a house by a family, the de-

sign of a new product or a production planning or

to find the best...