Thierry Marchant. Thierry.Marchant@UGent.be Affiliation : Professor at Ghent University from February 2000, in the department of data analysis.

Former positions :

Research :

• Axiomatic foundations of multicriteria decision aiding.
• Voting theory with specific interest for the Borda method and scoring methods. Axiomatic and probabilistic aspects.
• Measurement theory.
• Decision under uncertainty.
• Distributive justice.
• Foundations of cognitive mapping.
• Bibliometrics.

Work in progress :

• Gravel, N., Marchant, T. and Sen, A. ''Uniform Expected Utility Criteria for Decision Making under Ignorance or Objective Ambiguity"
• Marchant, T. "Central tendency for compositional data sets: an axiomatic approach",

Books :

• Bouyssou, D., Marchant, T., Pirlot, M., Tsoukias, A. and Vincke P. Evaluation and Decision models with multiple criteria : stepping stones for the analyst, Springer, 445 pp. (2006).
• Bouyssou, D., Marchant, T., Perny, P., Pirlot, M., Tsoukias, A. and Vincke P. Evaluation and Decision models : a critical perspective, Kluwer, 288 pp. (2000).

Articles :

• Dimitrov, D., Marchant, T. and Mishra, D. "Separability and Aggregation of Equivalence Relations", Economic Theory, forthcoming. (Preliminary version)
• Bouyssou, D. and Marchant, T. "Subjective expected utility without preferences", Journal of Mathematical Psychology, 55, 457-468 (2011). (Preliminary version)
• Bouyssou, D. and Marchant, T. "Ranking scientists and departments in a consistent manner", International Journal of the American Society for Information Science and Technology, 62, 1761-1769 (2011). (Preliminary version)
• Bouyssou, D. and Marchant, T. "Bibliometric rankings of journals based on Impact Factors: An axiomatic approach" , Journal of Informetrics, 5, 75-86 (2011). (Preliminary version)
• Bouyssou, D. and Marchant, T. "Biorders with frontier" , Order, 28, 53-87 (2011). (Preliminary version)
• Bouyssou, D. and Marchant, T. "Consistent bibliometric rankings of authors and of journals" , Journal of Informetrics, 4, 365-378 (2010). (Preliminary version)
• Bouyssou, D. and Marchant, T. "Additive conjoint measurement with ordered categories", European Journal of Operational Research, 203, 195-204 (2010). The proofs of the results are available online on ScienceDirect as supplementary material. (Preliminary version with proofs included)
• Marchant, T. "Score-based bibliometric rankings of authors", International Journal of the American Society for Information Science and Technology, 60, 1132-1137 (2009). (Preliminary version)
• Marchant, T. "An axiomatic characterization of the ranking based on the h-index and some other bibliometric rankings of authors", Scientometrics, 80, 325-342 (2009). (Preliminary version)
• Bouyssou, D. and Marchant, T. "Ordered categories and additive conjoint measurement on connected sets", Journal of Mathematical Psychology, 53, 92-105 (2009). (Preliminary version)
• Marchant, T., "Scale Invariance and similar Invariance Conditions for Bankruptcy Problems", Social Choice and Welfare, 31, 693-707 (2008). Some errors in this version were pointed out to me by William Thomson (erratum). In this somewhat different version, the errors have been corrected.
• Marchant, T., "A measurement-theoretic axiomatization of trapezoidal membership functions", IEEE Transactions on Fuzzy Systems, 15, 238-242 (2007). (Preliminary version)
• Desimpelaere, C. and Marchant, T., "An empirical test of some measurement-theoretic axioms for fuzzy sets", Fuzzy Sets and Systems, 158, 1348-1359 (2007). (Preliminary version)
• Marchant, T., "An axiomatic characterization of different majority concepts", European Journal of Operational Research, 179, 160-173 (2007). (Preliminary version)
• Bouyssou, D. and Marchant, T., "An axiomatic approach to noncompensatory sorting methods in MCDM, I: The case of two categories", European Journal of Operational Research, 178, 217-245 (2007). (Preliminary version)
• Bouyssou, D. and Marchant, T., "An axiomatic approach to noncompensatory sorting methods in MCDM, II: More than two categories", European Journal of Operational Research, 178, 246-276 (2007). (Preliminary version)
• Marchant, T., "Maximal orness weights with a fixed variability for owa operators", International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 14, pp. 271-276 (2006). (Preliminary version)
• Marchant, T., "The measurement of membership by subjective ratio estimation", Fuzzy Sets and Systems, 148, pp. 179-199 (2004). (Preliminary version)
• Marchant, T., "The measurement of membership by comparisons", Fuzzy Sets and Systems, 148, pp. 157-177 (2004). (Preliminary version)
• Marchant, T. and Luce, R.D., "Technical note on the joint receipt of quantities of a single good", Journal of Mathematical Psychology, 47, pp. 66-74 (2003). (Preliminary version)
• Marchant, T., "Towards a theory of MCDM; Stepping away from social choice theory", Mathematical Social Sciences, 45, pp. 343-363 (2003). (Preliminary version)
• Marchant, T., "Cooperative phenomena in crystals and the probability of tied Borda count elections", Discrete Applied Mathematics, 119, pp. 265-271 (2002). (Preliminary version)
• Marchant, T., "The probability of ties with scoring methods: some results", Social Choice and Welfare, 18, pp. 709-735 (2001). (Preliminary version)
• Marchant, T., "The Borda rule and Pareto stability: a further comment", Fuzzy sets and systems, 120/3, pp. 423-428 (2001).
• Marchant, T., "Group Decision Support Systems: a short review", INFOR, 38/1, pp. 1-13 (2000).
• Marchant, T., "Does the Borda rule provide more than a ranking?", Social Choice and Welfare, 17/3, pp. 381-391 (2000).
• Marchant, T. and Pirlot, M., "Modern decisive wives don't wear corsets", Journal of Multi-citeria Decision Analysis, 8-104, pp. 237-238 (1999).
• Marchant, T., "Cognitive maps and fuzzy implication", European Journal of Operational Research, 114, pp. 626-637 (1999).
• Marchant, T., "Cardinality and the Borda score", European Journal of Operational Research, 108, pp. 464-472 (1998). (Preliminary version)
• Marchant, T., "Les systèmes d'aide à la décision en groupe", Nouvelles de la Science et des Technologies , 15, pp. 73-80 (1997).
• Marchant, T., "PROMETHEE and GAIA in a multi-decision maker setting", Ricerca Operativa, 26-79, pp. 19-43 (1997).
• Marchant, T., "Valued relations aggregation with the Borda method", Journal of multi-criteria decision analysis, 5, pp. 127-132 (1996). (Preliminary version)

Chapters in books :

• Gravel, N., Marchant, T., Sen, A. Comparing Societies with Different Numbers of Individuals on the Basis of Their Average Advantage, in Fleurbaey, M., Salles, M. and Weymark, J. A., Eds, Social Ethics and Normative Economics. Springer, 357 pp. (2011). (Preliminary version)
• Bouyssou, D., Marchant, T., Perny, P. Social Choice Theory and Multicriteria Decision Aiding, in Bouyssou, D., Dubois, D., Pirlot, M. and Prade, H., Eds, Concepts and Methods of the Decision-making Process. ISTE & Wiley, 912 pp. (2009). (Preliminary version)
• Bouyssou, D., Marchant, T., Pirlot, M. A conjoint measurement approach to the discrete Sugeno integral, in Brams, S., Gehrlein, W. V. and Roberts, F. S., Eds, The mathematics of preference, choice and order. Essays in honor of Peter C. Fishburn. Springer (2009).
• Bouyssou, D., Marchant, T., Perny, P. Théorie du choix social et aide multicritère à la décision, in Bouyssou, D., Dubois, D., Pirlot, M. and Prade, H., Eds, Concepts et méthodes pour l'aide à la décision, 3 : Analyse multicritère. Hermès, 324 pp. (2006).

Working papers, reports, preprints :

• Marchant, T., Bouyssou, D., Perny, P., Pirlot, M., Tsoukias, A. and Vincke, Ph. " Les indicateurs en perspective", Preprints of the Service de mathématiques de la gestion, 2003-09 (2003).
• Marchant, T. " Rationing : dynamic considerations, equivalent sacrifice and links between the two approaches", Working Papers of Faculty of Economics and Business Administration, Ghent University, 04/244 (2004).
• Marchant, T. and Bouyssou, D. " A common framework for describing most aggregation procedures in decision aiding", Preprints of the Service de mathématiques de la gestion, 99-23 (1999).

Editorial activities :

• Editor-in-chief (with S. Martello and L. Liberti) of 4OR, a Quarterly Journal of Operations Research.

• Member of the editorial board of Fuzzy Sets and Systems.