Jacques Pictet

A Framework for Group Decision Using a MCDA Model: Sharing, Aggregating or Comparing Individual Information?

ABSTRACT This article proposes a framework for group decision procedures which use A MCDA model. The framework is based on three elementary procedures—sharing, aggregating and comparing—which define the way in which the views of individuals are brought together with the aim of achieving a group decision. The framework refers to: (i) the main elements of a MCDA model, namely the aggregation method, the alternatives, the criteria, the evaluations and the weights, (ii) the extent to which these elements are individual or common to the group and, (Hi) the use of the three procedures—sharing, aggregating and comparing—to obtain and use these elements. The framework allows us to compare and contrast different ways of working with MCDA methods from a technical and a sociological perspective. The discussion highlights issues relating to process management, facilitation, time management and problem structuring.

Extended use of the cards procedure as a simple elicitation technique for MAVT. Application to public procurement in Switzerland

Abstract The cards procedure was designed in the early 90 as a simple way to elicit weights for multiple criteria decision analysis outranking methods. It is based on the elicitation of the difference of importance between successive pairs of criteria. We propose to extend its use in two directions: • Use within MAVT, with specific requirements to remain meaningful. • Use for the evaluation of the alternatives on a specific type of criterion. This procedure does not necessarily satisfy all theoretical constraints, but it improves the existing practice of lay persons, as exemplified with the case of public procurement in Switzerland.

Talking about the Practice of MCDA

Graph Theory with path-breaking contributions on the theory of flows in networks and project scheduling, Multiple Criteria Decision Aiding with the invention of the family of ELECTRE methods and methodological contribution to decision-aiding which lead to the creation of Multi-Criteria Decision Analysis (MCDA). Professor Bernard Roy has had considerable influence on the development of these two broad areas. £/LIST£ Part one contains papers by Jacques Lesourne, and Dominique de Werra & Pierre Hansen related to the early career of Bernard Roy when he developed many new techniques and concepts in Graph Theory in order to cope with complex real-world problems. Part two of the book is devoted to Philosophy and Epistemology of Decision-Aiding with contributions from Valerie Belton & Jacques Pictet and Jean-Luis Genard & Marc Pirlot. Part three includes contributions based on Theory and Methodology of Multi-Criteria Decision-Aiding based on a general framework for conjoint measurement that allows intrasitive preferences. Denis Bouyssou & Marc Pirlot; Alexis Tsoukias, Patrice Perny & Philippe Vincke; Luis Dias & Joao Climaco; Daniel Vanderpooten; Michael Doumpos & Constantin Zopounidis; and Marc Roubens offer a considerable range of examinations of this aspect of MCDA. Part four is devoted to Perference Modeling with contributions from Peter Fishburn; Salvatore Greco, Benedetto Matarazzo & Roman Slowinski; Salem Benferhat, Didier Dubois & Henri Prade; Oscar Franzese & Mark McCord; Bertrand Munier; and Raymond Bisdorff. Part five groups Applications of Multi-Criteria Decision-Aiding, and Carlos Henggeler Antunes, Carla Oliveira & Joao Climaco; Carlos Bana e Costa, Manuel da Costa-Lobo, Isabel Ramos & Jean-Claude Vansnick; Yannis Siskos & Evangelos Grigoroudis; Jean-Pierre Brans, Pierre Kunsch & Bertrand Mareschal offer a wide variety of application problems. Finally, Part six includes contributions on Multi-Objective Mathematical Programming from Jacques Teghem, Walter Habenicht and Pekka Korhonen.

Multicriteria Output Integration Analysis

CETP’s relationship with the Alliance for Global Sustainability (AGS) implies that sustainability is a basic concern of the project’s scenarios assessment process. Because sustainability is by nature a multidimensional concept, it requires the use of methodological approaches specifically designed to tackle decision-making problems of this type. Such a methodology should encompass multiple criteria, including economic, social and environmental issues, under sustainability constraints, and produce results that are transparent and easy for different stakeholders to understand.

Impact assessment of urban waste processing systems using a multibox model

A set of 14 household waste management system scenarios have been ranked according to the environmental impact of their respective refuse outputs. Each system has been characterized by the annual release of 8 chemical elements, namely: S, Cl, Fe, Cu, Zn, Cd, Hg and Pb. The method relies on the determination of a load factor, which is defined as the ratio between the actual pollutant concentration and the accepted norm for this concentration. These figures are calculated via a three box model, where the three boxes are air, water and soil. The model considers the pollutant output from each scenario, the dilution or accumulation in each box as well as dry deposition from air to water and soil. The pollutant load factors are then aggregated in order to obtain a score. These scores allow a final scenario grade to be determined, which can then be used to rank the various scenarios. The final grades are strongly dependant on the presence of deposition terms as well as on the values chosen for the individual pollutant concentration norms, whereas they are reasonably independent of all other parameters.