Refereed Journals
  1. C. Bingane, M.F. Anjos, and S. Le Digabel,
    Tight-and-Cheap Conic Relaxation for the Optimal Reactive Power Dispatch Problem.
    To appear in IEEE Transactions on Power Systems.
    [bibtex]

  2. M.D. de Souza Dutra, M.F. Anjos, and S. Le Digabel,
    A realistic energy optimization model for smart-home appliances.
    To appear in International Journal of Energy Research.
    [bibtex] [read online]

  3. V.J. Rodrigues de Sousa, M.F. Anjos, and S. Le Digabel,
    Improving the linear relaxation of maximum $k$-cut with semidefinite-based constraints.
    EURO Journal on Computational Optimization, 7(2), p. 123-151, 2019.
    [bibtex] [read online]

  4. C. Audet, S. Le Digabel, and C. Tribes,
    The Mesh Adaptive Direct Search Algorithm for Granular and Discrete Variables.
    SIAM Journal on Optimization, 29(2), p. 1164-1189, 2019.
    [bibtex]

  5. C. Bingane, M.F. Anjos, and S. Le Digabel,
    Tight-and-Cheap Conic Relaxation for the AC Optimal Power Flow Problem.
    IEEE Transactions on Power Systems, 33(6), p. 7181-7188, 2018.
    [bibtex]
    CORS 2019 Best Student Paper (C. Bingane).
    Description of the project (GERAD).

  6. C. Audet, A.R. Conn, S. Le Digabel, and M. Peyrega,
    A progressive barrier derivative-free trust-region algorithm for constrained optimization.
    Computational Optimization and Applications, 71(2), p. 307-329, 2018.
    [bibtex] [read online]

  7. A.E. Gheribi, A.D. Pelton, E. Bélisle, S. Le Digabel, and J.-P. Harvey,
    On the prediction of low-cost high entropy alloys using new thermodynamic multi-objective criteria.
    Acta Materialia, 161, p. 73-82, 2018.
    [bibtex]

  8. C. Audet, A. Ihaddadene, S. Le Digabel, and C. Tribes,
    Robust optimization of noisy blackbox problems using the Mesh Adaptive Direct Search algorithm.
    Optimization Letters, 12(4), p. 675-689, 2018.
    [bibtex] [read online]

  9. V.J. Rodrigues de Sousa, M.F. Anjos, and S. Le Digabel,
    Computational Study of Valid Inequalities for the Maximum k-Cut Problem.
    Annals of Operations Research, 265(1), p. 5-27, 2018.
    [bibtex]

  10. N. Amaioua, C. Audet, A.R. Conn, and S. Le Digabel,
    Efficient solution of quadratically constrained quadratic subproblems within the MADS algorithm.
    European Journal of Operational Research, 268(1), p. 13-24, 2018.
    [bibtex]

  11. C. Audet, M. Kokkolaras, S. Le Digabel, and B. Talgorn,
    Order-based error for managing ensembles of surrogates in mesh adaptive direct search.
    Journal of Global Optimization, 70(3), p. 645-675, 2018.
    [bibtex] [read online]

  12. B. Talgorn, C. Audet, M. Kokkolaras, and S. Le Digabel,
    Locally weighted regression models for surrogate-assisted design optimization.
    Optimization and Engineering, 19(1), p. 213-238, 2018.
    [bibtex] [read online]

  13. F. Bélisle, N. Saunier, G.-A. Bilodeau, and S. Le Digabel,
    Optimized Video Tracking for Automated Vehicle Turning Movement Counts.
    Transportation Research Record, 2645, p. 104-112, 2017.
    [bibtex]

  14. C. Audet, S. Le Digabel, and C. Tribes,
    Dynamic scaling in the mesh adaptive direct search algorithm for blackbox optimization.
    Optimization and Engineering, 17(2), p. 333-358, 2016.
    [bibtex] [read online]

  15. R.B. Gramacy, G.A. Gray, S. Le Digabel, H.K.H. Lee, P. Ranjan, G.N. Wells, and S.M. Wild,
    Modeling an Augmented Lagrangian for Blackbox Constrained Optimization (with discussion).
    Technometrics, 58(1), p. 1-11, 2016.
    [bibtex]

  16. R.B. Gramacy, G.A. Gray, S. Le Digabel, H.K.H. Lee, P. Ranjan, G.N. Wells, and S.M. Wild,
    Rejoinder for Modeling an Augmented Lagrangian for Blackbox Constrained Optimization.
    Technometrics, 58(1), p. 26-29, 2016.
    [bibtex]

  17. A.E. Gheribi, J.-P. Harvey, E. Bélisle, C. Robelin, P. Chartrand, A.D. Pelton, C.W. Bale, and S. Le Digabel,
    Use of a biobjective direct search algorithm in the process design of material science applications.
    Optimization and Engineering, 17(1), p. 27-45, 2016.
    [bibtex] [read online]

  18. M. Pourbagian, B. Talgorn, W.G. Habashi, M. Kokkolaras, and S. Le Digabel,
    Constrained problem formulations for power optimization of aircraft electro-thermal anti-icing systems.
    Optimization and Engineering, 16(4), p. 663-693, 2015.
    [bibtex] [read online]

  19. R.B. Gramacy and S. Le Digabel,
    The mesh adaptive direct search algorithm with treed Gaussian process surrogates.
    Pacific Journal of Optimization, 11(3), p. 419-447, 2015.
    STYRENE test problem.

    MDO test problem.
    [bibtex]

  20. C. Audet, S. Le Digabel, and M. Peyrega,
    Linear equalities in blackbox optimization.
    Computational Optimization and Applications, 61(1), p. 1-23, 2015.
    Numerical results.
    [bibtex] [read online]

  21. E. Bélisle, Z. Huang, S. Le Digabel, and A.E. Gheribi,
    Evaluation of machine learning interpolation techniques for prediction of physical properties.
    Computational Materials Science, 98, p. 170-177, 2015.
    [bibtex]

  22. B. Talgorn, S. Le Digabel, and M. Kokkolaras,
    Statistical Surrogate Formulations for Simulation-Based Design Optimization.
    Journal of Mechanical Design, 137(2), p. 021405-1-021405-18, 2015.
    [bibtex]

  23. M. Minville, D. Cartier, C. Guay, L.-A. Leclaire, C. Audet, S. Le Digabel, and J. Merleau,
    Improving process representation in conceptual hydrological model calibration using climate simulations.
    Water Resources Research, 50(6), p. 5044-5073, 2014.
    [bibtex]

  24. E.M. Gertz, T. Hiekkalinna, S. Le Digabel, C. Audet, J.D. Terwilliger, and A.A. Schaffer,
    PSEUDOMARKER 2.0: efficient computation of likelihoods using NOMAD.
    BMC Bioinformatics, 15(47), p. 1-8, 2014.
    [bibtex] [read online]

  25. C. Audet, A. Ianni, S. Le Digabel, and C. Tribes,
    Reducing the Number of Function Evaluations in Mesh Adaptive Direct Search Algorithms.
    SIAM Journal on Optimization, 24(2), p. 621–642, 2014.
    Numerical results.
    [bibtex]

  26. A.E. Gheribi, S. Le Digabel, C. Audet, and P. Chartrand,
    Identifying optimal conditions for Magnesium based alloy design using the Mesh Adaptive Direct Search algorithm.
    Thermochimica Acta, 559, p. 107-110, 2013.
    [bibtex]

  27. S. Alarie, C. Audet, V. Garnier, S. Le Digabel, and L.A. Leclaire,
    Snow water equivalent estimation using blackbox optimization.
    Pacific Journal of Optimization, 9(1), p. 1-21, 2013.
    [bibtex]
    The GMON stations (Radio-Canada, in French).

  28. A.R. Conn and S. Le Digabel,
    Use of quadratic models with mesh adaptive direct search for constrained black box optimization.
    Optimization Methods and Software, 28(1), p. 139-158, 2013.
    [bibtex]

  29. C. Audet, J.E. Dennis, Jr., and S. Le Digabel,
    Trade-off studies in blackbox optimization.
    Optimization Methods and Software, 27(4-5), p. 613-624, 2012.
    [bibtex]

  30. A.E. Gheribi, C. Audet, S. Le Digabel, E. Bélisle, C.W. Bale, and A.D. Pelton,
    Calculating optimal conditions for alloy and process design using thermodynamic and property databases, the FactSage software and the Mesh Adaptive Direct Search algorithm.
    CALPHAD: Computer Coupling of Phase Diagrams and Thermochemistry, 36, p. 135-143, 2012.
    [bibtex]

  31. C. Audet and S. Le Digabel,
    The mesh adaptive direct search algorithm for periodic variables.
    Pacific Journal of Optimization, 8(1), p. 103-119, 2012.
    [bibtex]

  32. A.E. Gheribi, C. Robelin, S. Le Digabel, C. Audet, and A.D. Pelton,
    Calculating all local minima on liquidus surfaces using the FactSage software and databases and the Mesh Adaptive Direct Search algorithm.
    Journal of Chemical Thermodynamics, 43(9), p. 1323-1330, 2011.
    [bibtex]

  33. S. Le Digabel,
    Algorithm 909: NOMAD: Nonlinear Optimization with the MADS algorithm.
    ACM Transactions on Mathematical Software, 37(4), p. 44:1-44:15, 2011.
    [bibtex]

  34. C. Audet, J.E. Dennis, Jr., and S. Le Digabel,
    Globalization strategies for Mesh Adaptive Direct Search.
    Computational Optimization and Applications, 46(2), p. 193-215, 2010.
    [bibtex] [read online]

  35. S. Perron, P. Hansen, S. Le Digabel, and N. Mladenović,
    Exact and Heuristic Solutions of the Global Supply Chain Problem with Transfer Pricing.
    European Journal of Operational Research, 202(3), p. 864-879, 2010.
    [bibtex]

  36. M.A. Abramson, C. Audet, J.E. Dennis, Jr., and S. Le Digabel,
    OrthoMADS: A Deterministic MADS Instance with Orthogonal Directions.
    SIAM Journal on Optimization, 20(2), p. 948–966, 2009.
    [bibtex]

  37. C. Audet, J.E. Dennis, Jr., and S. Le Digabel,
    Parallel Space Decomposition of the Mesh Adaptive Direct Search algorithm.
    SIAM Journal on Optimization, 19(3), p. 1150-1170, 2008.
    [bibtex]

  38. C. Audet, V. Béchard, and S. Le Digabel,
    Nonsmooth Optimization through Mesh Adaptive Direct Search and Variable Neighborhood Search.
    Journal of Global Optimization, 41(2), p. 299-318, 2008.
    [bibtex] [read online]

  39. C. Audet, J. Brimberg, P. Hansen, S. Le Digabel, and N. Mladenović,
    Pooling problem: Alternate formulations and solution methods.
    Management Science, 50(6), p. 761-776, 2004.
    [bibtex]

Refereed Book Chapters
  1. S. Al-Maskari, E. Bélisle, X. Li, S. Le Digabel, A. Nawahda, and J. Zhong,
    Classification with Quantification for Air Quality Monitoring.
    In Advances in Knowledge Discovery and Data Mining, Volume 9651 of Lecture Notes in Computer Science , p. 578-590, Springer, 2016.
    [bibtex]

  2. B. Talgorn, S. Le Digabel, and M. Kokkolaras,
    Blackbox Optimization in Engineering Design: Adaptive Statistical Surrogates and Direct Search Algorithms.
    In Engineering and Applied Sciences Optimization, Volume 38 of Computational Methods in Applied Sciences , p. 359-383, Springer, 2015.
    [bibtex]

  3. C. Audet, K. Diest, S. Le Digabel, L.A. Sweatlock, and D.E. Marthaler,
    Metamaterial Design by Mesh Adaptive Direct Search.
    In Numerical Methods for Metamaterial Design, Volume 127 of Topics in Applied Physics , p. 71-96, Springer, 2013.
    [bibtex]

  4. C. Audet, P. Hansen, and S. Le Digabel,
    Exact solution of three nonconvex quadratic programming problems.
    In Frontiers in Global Optimization, Volume 74 of Nonconvex Optimization and Applications , p. 25-43, Kluwer, 2004.
    [bibtex]

Refereed Conference Papers
  1. V. Picheny, R.B. Gramacy, S.M. Wild, and S. Le Digabel,
    Bayesian optimization under mixed constraints with a slack-variable augmented Lagrangian.
    Advances in Neural Information Processing Systems 29 (NIPS 2016), Paper No. 6439, p. 1435-1443, 2016.
    [bibtex]

  2. B. Talgorn, S. Le Digabel, and M. Kokkolaras,
    Problem Formulations for Simulation-Based Design Optimization Using Statistical Surrogates and Direct Search.
    Proceedings of The ASME 2014 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference.
    Paper No. DETC2014-34778, 2014.
    [bibtex]

  3. E. Duclos, S. Le Digabel, Y.-G. Guéhéneuc, and B. Adams,
    ACRE: An Automated Aspect Creator for Testing C++ Applications.
    Proceedings of the 17th European Conference on Software Maintenance and Reengineering (CSMR), IEEE Computer Society, p. 121-130, 2013.
    [bibtex]

  4. N. Bhattacharya, O. El-Mahi, E. Duclos, G. Beltrame, S. Le Digabel, Y.-G. Guéhéneuc, and G. Antoniol,
    Optimizing Threads Schedule Alignments to Expose the Interference Bug Pattern.
    Lecture Notes in Computer Science vol. 7515, 4th Symposium on Search Based Software Engineering (SSBSE),
    G. Fraser and J. Teixeira de Souza eds., Springer-Verlag, p. 90-104, 2012.
    [bibtex]

Submitted
  1. S. Le Digabel and S.M. Wild,
    A Taxonomy of Constraints in Simulation-Based Optimization.
    Technical report, Les Cahiers du GERAD G-2015-57.
    [bibtex] [supplemental information]

  2. S. Alarie, N. Amaioua, C. Audet, S. Le Digabel, and L.-A. Leclaire,
    Selection of variables in parallel space decomposition for the mesh adaptive direct search algorithm.
    Technical report, Les Cahiers du GERAD G-2018-38.
    [bibtex]

  3. C. Audet, J. Bigeon, D. Cartier, S. Le Digabel, and L. Salomon,
    Performance indicators in multiobjective optimization.
    Technical report, Les Cahiers du GERAD G-2018-90.
    [bibtex]

  4. M.D. de Souza Dutra, M.F. Anjos, and S. Le Digabel,
    A general framework for customized transition to smart homes.
    Technical report, Les Cahiers du GERAD G-2019-09.
    [bibtex]

  5. M.D. de Souza Dutra, M.F. Anjos, and S. Le Digabel,
    A Framework for Peak Shaving Through the Coordination of Smart Homes.
    Technical report, Les Cahiers du GERAD G-2019-16.
    [bibtex]

  6. C. Bingane, M.F. Anjos, and S. Le Digabel,
    CONICOPF: A tight-and-cheap conic relaxation with accuracy metrics for single-period and multi-period ACOPF problems.
    Technical report, Les Cahiers du GERAD G-2019-19.
    [bibtex] [code]


Unpublished Technical Reports
  1. C. Audet, S. Le Digabel, and M. Peyrega,
    A derivative-free trust-region augmented Lagrangian algorithm.
    Technical report, Les Cahiers du GERAD G-2016-53.
    [bibtex]

Ph.D. Thesis

Extensions of the MADS algorithm for nonsmooth optimization.
Polytechnique Montréal, 2008.
[bibtex]

Communications

  1. S. Le Digabel, D. Lakhmiri, and C. Tribes
    HYPERNOMAD: Hyper-parameter optimization of deep neural networks using mesh adaptive direct search.
    CORS 61st Annual Conference, Saskatoon, 2019.

  2. S. Le Digabel, D. Lakhmiri, and C. Tribes
    HYPERNOMAD: Hyper-parameter optimization of deep neural networks using mesh adaptive direct search.
    The Optimization days, Montréal, 2019.

  3. S. Le Digabel
    Démystifier l’optimisation mathématique.
    Conférence Science des données, Montréal, 2019.
    Fichiers.

  4. S. Le Digabel
    Blackbox Optimization with NOMAD: Applications and Software.
    Huawei, Montréal, 2019.

  5. S. Le Digabel, C. Audet, V. Rochon-Montplaisir, and C. Tribes
    NOMAD, a blackbox optimization software.
    16th EUROPT Workshop on Advances in Continuous Optimization, Almería, 2018.

  6. S. Le Digabel, C. Audet, and C. Tribes
    The mesh adaptive direct search algorithm for granular and discrete variables.
    23rd International Symposium on Mathematical Programming (ISMP 2018), Bordeaux, 2018.

  7. S. Le Digabel, C. Audet, V. Rochon-Montplaisir, and C. Tribes
    Blackbox optimization with the MADS algorithm and the NOMAD software.
    Hydro-Québec, IREQ, Varennes, 2018.

  8. S. Le Digabel, C. Audet, and C. Tribes
    The mesh adaptive direct search algorithm for granular and discrete variables.
    The Optimization days, Montréal, 2018.

  9. S. Le Digabel, C. Audet, V. Rochon-Montplaisir, and C. Tribes
    Blackbox optimization with the NOMAD software.
    UQAC, Chicoutimi, 2018.

  10. S. Le Digabel, C. Audet, and C. Tribes
    The mesh adaptive direct search algorithm for granular and discrete variables.
    Rio Tinto, Saguenay, 2018.

  11. S. Le Digabel, B. Talgorn, C. Audet, and M. Kokkolaras
    Order-Based Error for Managing Ensembles of Surrogates in Derivative-Free Optimization.
    21st conference of the International Federation of Operational Research Societies (IFORS), Quebec City, 2017.

  12. S. Le Digabel, B. Talgorn, C. Audet, and M. Kokkolaras
    Order-Based Error for Managing Ensembles of Surrogates in Derivative-Free Optimization.
    SIAM Conference on Optimization (OP17), Vancouver, 2017.

  13. S. Le Digabel, B. Talgorn, C. Audet, and M. Kokkolaras
    Order-Based Error for Managing Ensembles of Surrogates in Derivative-Free Optimization.
    The Optimization days, Montréal, 2017.

  14. S. Le Digabel, C. Audet, and C. Tribes
    The Mesh Adaptive Direct Search Algorithm for Discrete Blackbox Optimization.
    International Conference on Continuous Optimization (ICCOPT), Tokyo, 2016.

  15. S. Le Digabel
    BlackBox Optimization: Algorithm and Applications.
    Workshop on Nonlinear Optimization Algorithms and Industrial Applications, The Fields Institute, Toronto, 2016.

  16. S. Le Digabel
    The Mesh Adaptive Direct Search Algorithm for Discrete Blackbox Optimization.
    CORS 58th Annual Conference, Banff, 2016.

  17. S. Le Digabel
    BlackBox Optimization: Algorithm and Applications.
    7ème colloque québécois sur le développement numérique de produits, Polytechnique Montréal, 2016.

  18. S. Le Digabel
    BlackBox Optimization: Algorithm and Applications.
    UBC Okanagan, Kelowna, 2016.

  19. S. Le Digabel
    Blackbox optimization with the NOMAD software.
    CanmetENERGY, Varennes, 2015.

  20. S. Le Digabel
    Blackbox optimization with the NOMAD software.
    Bombardier, Montréal, 2014.

  21. S. Le Digabel, B. Talgorn, and M. Kokkolaras
    Formulations for Surrogate-Based Constrained Blackbox Optimization.
    12th EUROPT Workshop on Advances in Continuous Optimization, Perpignan, 2014.

  22. S. Le Digabel, B. Talgorn, and M. Kokkolaras
    Formulations for Surrogate-Based Constrained Blackbox Optimization.
    SIAM Conference on Optimization (OP14), San Diego, 2014.

  23. S. Le Digabel, B. Talgorn, and M. Kokkolaras
    Formulations for Surrogate-Based Constrained Blackbox Optimization.
    The Optimization days, Montréal, 2014.

  24. S. Le Digabel
    Black-Box Optimization: Algorithm and Applications.
    LANL, Los Alamos, 2014.

  25. S. Le Digabel
    Engineering applications treated with the MADS algorithm.
    International Conference on Continuous Optimization (ICCOPT), Lisbon, 2013.

  26. S. Le Digabel, C. Audet, A. Ianni, and C. Tribes
    The mesh adaptive direct search algorithm with reduced number of directions.
    21th International Symposium of Mathematical Programming (ISMP), Berlin, 2012.

  27. S. Le Digabel, C. Audet, A. Ianni, and C. Tribes
    The Mesh Adaptive Direct Search Algorithm with Reduced Number of Directions.
    The Optimization days, Montréal, 2012.

  28. S. Le Digabel,
    Use of models with the MADS algorithm for blackbox optimization.
    The Optimization days, Montréal, 2011.

  29. S. Le Digabel, S. Alarie, C. Audet, V. Garnier, and L.A. Leclaire,
    Snow water equivalent estimation using blackbox optimization.
    SIAM Conference on Computational Science and Engineering (CSE11), Reno, 2011.

  30. S. Le Digabel, C. Audet, and J.E. Dennis, Jr.,
    Blackbox Optimization.
    ICiS workshop: Optimization in Energy Systems, Snowbird, 2010.

  31. S. Le Digabel, M.A. Abramson, C. Audet, and J.E. Dennis, Jr.,
    Parallel Versions of the MADS Algorithm for Black-Box Optimization.
    The Optimization days, Montréal, 2010.
    [bibtex]

  32. S. Le Digabel, M.A. Abramson, C. Audet, and J.E. Dennis, Jr.,
    Black-Box Optimization with the NOMAD Software.
    The Boeing Company, Seattle, 2010.

  33. S. Le Digabel, C. Audet, and J.E. Dennis, Jr.,
    Parallel Algorithms for Black-Box Optimization.
    14th SIAM Conference on Parallel Processing for Scientific Computing (PP10), Seattle, 2010.

  34. S. Le Digabel, C. Audet, J.E. Dennis, Jr, and Q. Reynaud,
    Black-box Optimization with the NOMAD Software.
    20th International Symposium of Mathematical Programming (ISMP), Chicago, 2009.

  35. S. Le Digabel and C. Audet,
    Black-Box Optimization with the NOMAD Software.
    The Optimization days, Montréal, 2009.

  36. S. Le Digabel, C. Audet, and J.E. Dennis, Jr.,
    Parallel Variable Distribution for Mesh Adaptive Direct Search.
    ICCOPT II – MOPTA 07, McMaster University, Hamilton, 2007.

  37. S. Le Digabel and C. Audet,
    Parallel Variable Distribution for Mesh Adaptive Direct Search.
    The Optimization days, Montréal, 2007.

  38. S. Le Digabel, C. Audet, and V. Béchard,
    Non-Smooth Optimization by Combining MADS Algorithm and VNS Metaheuristic.
    The Optimization days, Montréal, 2006.

  39. S. Le Digabel, C. Audet, J. Brimberg, P. Hansen, and N. Mladenović,
    The Pooling Problem: Alternate Formulations and Solution Methods.
    The Optimization days, Montréal, 2003.

  40. S. Le Digabel, B. Jaumard, P. Mahey, and C. Meyer,
    Minimizing the Congestion in Link Assignment and Routing Problems with Degree Constraints.
    The Optimization days, Montréal, 2002.

Other

  1. F. Benoît and S. Le Digabel,
    GERAD and the Optimization Days.
    The GERAD newsletters, 11(1), p. 7, 2014.
    [bibtex]

  2. S. Le Digabel and C. Tribes,
    The Nomad software for blackbox optimization.
    The GERAD newsletters (Software), 9(2), p. 6, 2013.
    [bibtex]

  3. M.A. Abramson, C. Audet, J.E. Dennis, Jr., and S. Le Digabel,
    Ortho-MADS: A Deterministic MADS Instance with Orthogonal Directions.
    The GERAD newsletters (Articles in first-class journals), 6(1&2), p. 3, 2009.
    [bibtex]

  4. C. Audet, S. Le Digabel, and C. Tribes,
    NOMAD user guide.
    Technical report, Les Cahiers du GERAD G-2009-37.
    [bibtex]

  5. C. Audet, S. Alarie, S. Le Digabel, Q. Lequy, M. Sylla, and O. Marcotte,
    Localisation de stations de mesure automatisée du couvert nival.
    Proceedings of the Second Montreal Industrial Problem Solving Workshop, CRM-3277, p. 9-18, 2008.
    [bibtex]

  6. C. Audet, J.E. Dennis, Jr., and S. Le Digabel,
    Parallel Space Decomposition of the Mesh Adaptive Direct Search algorithm.
    The GERAD newsletters (Eleven articles published in leading journals), 5(2), p. 3, 2008.
    [bibtex]

Journal Rankings

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