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Pierre Hansen

Professor,  Department of Decision Sciences

Pierre  Hansen

Contact information

HEC Montréal
3000, chemin de la Côte-Sainte-Catherine
Montréal (Québec)
Canada H3T 2A7

Email: pierre.hansen@hec.ca
Phone: 514 340-6486
Secretary: 514 340-6473
Fax: 514 340-5634
Office: 4.322

Other title(s)


  • Ing., Bruxelles
  • Diplôme d'agrégation de l'enseignement supérieur en mathématiques, Bruxelles


  • Operational research
  • Global optimization
  • Automated classification
  • Chart theory
  • Localization

Journal articles (27)

SOUHIR, Elleuch, HANSEN, Pierre, JARBOUI, Bassem, MLADENOVIC, Nenad; « New VNP for automatic programming », Electronic Notes in Discrete Mathematics, vol. 58, 2017, p. 191-198.

HANSEN, Pierre, HERTZ, Alain, SELLAL, Cherif, VUKICEVIC, Damir, AOUCHICHE, Mustapha, CAPOROSSI, Gilles; « Edge Realizability of Connected Simple Graphs », MATCH Communications in Mathematical and in Computer Chemistry, vol. 78, no 3, 2017, p. 689-712.

MJIRDA, Anis, TODOSIJEVIC, Raca, HANAFI, Saïd, HANSEN, Pierre, MLADENOVIC, Nenad; « Sequential variable neighborhood descent variants: an empirical study on the traveling salesman problem », International Transactions in Operational Research, vol. 24, no 3, 2017, p. 615-633.

HANSEN, Pierre, AOUCHICHE, Mustapha; « Distance Laplacian eigenvalues and chromatic number in graphs », Filomat, vol. 31, no 9, 2017, p. 2545-2555.

HANSEN, Pierre, MLADENOVIC, Nenad, TODOSIJEVIC, Raca, HANAFI, Saïd; « Variable neighborhood search: basics and variants », EURO Journal on Computational Optimization, vol. 5, no 3, 2017, p. 423-454.

AOUCHICHE, Mustapha, HANSEN, Pierre; « On the distance signless Laplacian of a graph », Linear and Multilinear Algebra, vol. 64, no 6, 2016, p. 1113-1123.

AOUCHICHE, Mustapha, HANSEN, Pierre; « Proximity, remoteness and distance eigenvalues of a graph », Discrete Applied Mathematics, vol. 213, 2016, p. 17-25.

NININ, Jordan, MESSINE, Frédéric, HANSEN, Pierre; « A reliable affine relaxation method for global optimization », 4OR - A Quarterly Journal of Operations Research, vol. 13, no 3, 2015, p. 247-277.

BETTINELLI, Andrea, HANSEN, Pierre, LIBERTI, Léo; « Community detection with the weighted parsimony criterion », Journal of Systems Science and Complexity, vol. 28, no 3, 2015, p. 517-545.

CARRIZOSA, Emilio, ALGUWAIZANI, Abdulrahman, HANSEN, Pierre, MLADENOVIC, Nenad; « New heuristic for harmonic means clustering », Journal of Global Optimization, vol. 63, no 3, 2015, p. 427-443.

HANSEN, Pierre, MACEDO, Rita, MLADENOVIC, Nenad; « Statistical tests of data classifiability with respect to a clustering criterion », Flogiston, vol. 23, 2015, p. 9-26.

CAFIERI, Sonia, COSTA, Alberto, HANSEN, Pierre; « Adding cohesion constraints to models for modularity maximization in networks », Journal of Complex Networks, vol. 3, no 3, 2015, p. 388-410.

COSTA, Alberto, HANSEN, Pierre; « A locally optimal hierarchical divisive heuristic for bipartite modularity maximization », Optimization Letters, vol. 8, no 3, 2014, p. 903-917.

CAFIERI, Sonia, COSTA, Alberto, HANSEN, Pierre; « Reformulation of a model for hierarchical divisive graph modularity maximization », Annals of Operations Research, vol. 222, no 1, 2014, p. 213-226.

SABOONCHI, Behnaz, HANSEN, Pierre, PERRON, Sylvain; « MaxMinMin p-dispersion problem: A variable neighborhood search approach », Computers & Operations Research, vol. 52, 2014, p. 251-259.

BELHAIZA, Slim, HANSEN, Pierre, LAPORTE, Gilbert; « A hybrid variable neighborhood tabu search heuristic for the vehicle routing problem with multiple time windows », Computers & Operations Research, vol. 52, 2014, p. 269-281.

FERNANDES, Issac F., ALOISE, Daniel, ALOISE, Dario J., HANSEN, Pierre, LIBERTI, Léo; « On the Weber facility location problem with limited distances and side constraints », Optimization Letters, vol. 8, no 2, 2014, p. 407-424.

CAFIERI, Sonia, HANSEN, Pierre, LIBERTI, Léo; « Improving Heuristics for Network Modularity Maximization Using and Exact Algorithm », Discrete Applied Mathematics, Vol. 163, 2014, p. 65-72.

BELHAIZA, Slim, AUDET, Charles, HANSEN, Pierre; « A Note on Bimatrix Game Maximal Selten Subsets », Arabian Journal of Mathematics, Vol. 3, no 3, 2014, p. 299-311.

DESROSIERS, Christian, GALINIER, Philippe, HANSEN, Pierre, HERTZ, Alain; « Automated generation of conjectures on forbidden subgraph characterization », Discrete Applied Mathematics, vol. 162, 2014, p. 177-194.

AOUCHICHE, Mustapha, HANSEN, Pierre; « Distance spectra of graphs: A survey », Linear Algebra and its Applications, vol. 458, 2014, p. 301-386.

CARBONNEAU, Réal, CAPOROSSI, Gilles, HANSEN, Pierre; « Globally Optimal Clusterwise Regression By Column Generation Enhanced with Heuristics, Sequencing and Ending Subset Optimization », Journal of Classification, vol. 31, no 2, 2014, p. 219-241.

CAFIERI, Sonia, HANSEN, Pierre, MLADENOVIC, Nenad; « Edge-ratio network clustering by Variable Neighborhood Search », European Physical Journal B, vol. 87, no 5, 2014, 7 p..

ALOISE, Daniel, HANSEN, Pierre, ROCHA, Caroline, SANTI, Éverton; « Column generation bounds for numerical microaggregation », Journal of Global Optimization, vol. 60, no 2, 2014, p. 165-182.

MLADENOVIC, Nenad, HANSEN, Pierre, BRIMBERG, Jack; « Sequential clustering with radius and split criteria », Central European Journal of Operations Research, vol. 21, 2013, p. S95-S115.

AOUCHICHE, Mustapha, CAPOROSSI, Gilles, HANSEN, Pierre; « Refutations, Results and Conjectures about the Balaban Index », International Journal of Chemical Modeling, Vol. 5, nos 2-3, 2013, p. 189-202.

AOUCHICHE, Mustapha, HANSEN, Pierre; « Two Laplacians for the distance matrix of a graph », Linear Algebra and its Applications, vol. 439, no 1, 2013, p. 21-33.


Book chapters (4)

CAPOROSSI, Gilles, HANSEN, Pierre, MLADENOVIC, Nenad; « Variable Neighborhood Search », Metaheuristics, Springer, 2016, p. 77-98.

CAPOROSSI, Gilles, HANSEN, Pierre; « La recherche à voisinages variables », Métaheuristiques, Eyrolles, 2014, p. 77-98.

HANSEN, Pierre, MEYER, Christophe; « A Polynomial Algorithm for a Class of 0–1 Fractional Programming Problems Involving Composite Functions, with an application to Additive Clustering », Clusters, Orders, and Trees:Methods and Applications: In honor of Boris Mirkin's 70th Birthday, Springer, 2014, p. 13-50.

ALOISE, Daniel, CAPOROSSI, Gilles, HANSEN, Pierre, LIBERTI, Léo, PERRON, Sylvain, RUIZ, Manuel; « Modularity Maximization in Networks by Variable Neighborhood Search », Graph Partitioning and Graph Clustering: 10th Dimacs Implementation Challenge Workshop, American Mathematical Society, 2013, p. 113-127.

This award and honor selection covers the last five years.

HANSEN, Pierre
Grand Prix de recherche Pierre-Laurin 2013, Ce prix souligne la contribution exceptionnelle en recherche d'un professeur titulaire ou d'un chercheur titulaire de HEC Montréal pour l'ensemble de sa carrière à l'École., HEC Montréal, 2013

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