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Optimisation

  1. 2019
  2. Published

    Dynamic prediction-based relocation policies in one-way station-based carsharing systems with complete journey reservations

    Repoux, M., Kaspi, M., Boyacı, B. & Geroliminis, N., 1/12/2019, In : Transportation Research Part B: Methodological. 130, p. 82-104 23 p.

    Research output: Contribution to journalJournal article

  3. Published

    Robust Network Capacity Expansion with Non-linear Costs

    Garuba, F., Jacko, P. & Goerigk, M., 15/11/2019, 19th Workshop on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems (ATMOS 2019). ATMOS2019 ed. Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, Vol. 75. 12 p. (OASICS).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

  4. E-pub ahead of print

    Adaptive policies for perimeter surveillance problems

    Grant, J. A., Leslie, D. S., Glazebrook, K., Szechtman, R. & Letchford, A., 6/11/2019, In : European Journal of Operational Research. 14 p.

    Research output: Contribution to journalJournal article

  5. Published

    Investigating the effect of temporal and spatial flexibility on the performance of one-way electric carsharing systems

    Boyacı, B. & Zografos, K. G., 1/11/2019, In : Transportation Research Part B: Methodological. 129, p. 244-272 29 p.

    Research output: Contribution to journalJournal article

  6. Forthcoming

    Performance evaluation of scheduling policies for the DRCMPSP

    Satic, U., Jacko, P. & Kirkbride, C., 23/09/2019, (Accepted/In press) The 25th International Conference on Analytical & Stochastic Modelling Techniques & Applications ASMTA-2019. (Lecture Notes in Computer Science ).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

  7. E-pub ahead of print
  8. E-pub ahead of print

    Facets from gadgets

    Letchford, A. & Vu, A., 14/09/2019, In : Mathematical Programming.

    Research output: Contribution to journalJournal article

  9. Published

    New valid inequalities for the fixed-charge and single-node flow polytopes

    Letchford, A. & Souli, G., 1/09/2019, In : Operations Research Letters. 47, 5, p. 353-357 5 p.

    Research output: Contribution to journalJournal article

  10. E-pub ahead of print

    Recent Advances in Selection Hyper-heuristics

    Drake, J. H., Kheiri, A., Özcan, E. & Burke, E. K., 7/08/2019, In : European Journal of Operational Research.

    Research output: Contribution to journalJournal article

  11. E-pub ahead of print

    Mixed uncertainty sets for robust combinatorial optimization

    Dokka, T., Goerigk, M. & Roy, R., 24/07/2019, In : Optimization Letters. 15 p.

    Research output: Contribution to journalJournal article

  12. E-pub ahead of print

    A heuristic for fair dynamic resource allocation in over-loaded OFDMA systems

    Letchford, A., Ni, Q. & Zhong, Z., 22/07/2019, In : Journal of Heuristics. 12 p.

    Research output: Contribution to journalJournal article

  13. In Press/Forthcoming
  14. E-pub ahead of print

    Generating hard instances for robust combinatorial optimization

    Goerigk, M. & Maher, S. J., 22/07/2019, In : European Journal of Operational Research. 280, 1, p. 34-45 12 p.

    Research output: Contribution to journalJournal article

  15. 2019
  16. Published

    Planning efficient 4D trajectories in Air Traffic Flow Management

    Dal Sasso, V., Djeumou Fomeni, F., Lulli, G. & Zografos, K. G., 16/07/2019, In : European Journal of Operational Research. 276, 2, p. 676-687 12 p.

    Research output: Contribution to journalJournal article

  17. Published

    A Comparison of Models for Uncertain Network Design

    Garuba, F., Goerigk, M. & Jacko, P., 23/06/2019. 20 p.

    Research output: Contribution to conference - Without ISBN/ISSN Conference paper

  18. Published

    Improving Abatement Levels and Welfare by Coarse Correlation in an Environmental Game

    Dokka Venkata Satyanaraya, T., Moulin, H., Ray, I. & Sen Gupta, S., 05/2019, Lancaster: Lancaster University, Department of Economics, (Economics Working Papers Series).

    Research output: Working paper

  19. Forthcoming

    Modelling and solving the combined inventory routing problem with risk consideration

    Kheiri, A. & Zografos, K. G., 17/04/2019, (Accepted/In press) GECCO '19 Companion, July 13–17, 2019, Prague, Czech Republic. New York: Association for Computing Machinery, Inc, 2 p. (GECCO '19 Companion, July 13–17, 2019, Prague, Czech Republic).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

  20. Published

    A Largest Empty Hypersphere Metaheuristic for Robust Optimisation with Implementation Uncertainty

    Hughes, M., Goerigk, M. & Wright, M. B., 03/2019, In : Computers and Operations Research. 103, p. 64-80 17 p.

    Research output: Contribution to journalJournal article

  21. Published

    On lifted cover inequalities: a new lifting procedure with unusual properties

    Letchford, A. N. & Souli, G., 17/01/2019, In : Operations Research Letters. 47, 2, p. 83-88 6 p.

    Research output: Contribution to journalJournal article

  22. Published

    The capacitated vehicle routing problem: stronger bounds in pseudo-polynomial time

    Letchford, A. N. & Salazar Gonzalez, J. J., 1/01/2019, In : European Journal of Operational Research. 272, 1, p. 24–31 8 p.

    Research output: Contribution to journalJournal article

  23. 2018
  24. Published

    A guide to conic optimisation and its applications

    Letchford, A. N. & Parkes, A. J., 11/2018, In : RAIRO Operations Research. 52, 4, p. 1087-1106 20 p.

    Research output: Contribution to journalJournal article

  25. Published

    Incorporating Stakeholders’ priorities and preferences in 4D trajectory optimization

    Dal Sasso, V., Djeumou Fomeni, F., Lulli, G. & Zografos, K. G., 11/2018, In : Transportation Research Part B: Methodological. 117, A, p. 594-609 16 p.

    Research output: Contribution to journalJournal article

  26. E-pub ahead of print

    Representative scenario construction and preprocessing for robust combinatorial optimization problems

    Goerigk, M. & Hughes, M., 29/10/2018, In : Optimization Letters. 15 p.

    Research output: Contribution to journalJournal article

  27. Published

    On scenario aggregation to approximate robust combinatorial optimization problems

    Chassein, A. & Goerigk, M., 10/2018, In : Optimization Letters. 12, 7, p. 1523-1533 11 p.

    Research output: Contribution to journalJournal article

  28. Published

    New valid inequalities and facets for the simple plant location problem

    Galli, L., Letchford, A. N. & Miller, S., 16/09/2018, In : European Journal of Operational Research. 269, 3, p. 824-833 10 p.

    Research output: Contribution to journalJournal article

  29. Published

    Air traffic (flow) management: Issues, challenges, and research opportunities

    Lulli, G., 11/09/2018, OR60: The OR Society Annual Conference. Kheiri, A. (ed.). Lancaster: Operational Research Society, p. 1-5 5 p.

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

  30. Published

    A binarisation heuristic for non-convex quadratic programming with box constraints

    Galli, L. & Letchford, A. N., 1/09/2018, In : Operations Research Letters. 46, 5, p. 529-533 5 p.

    Research output: Contribution to journalJournal article

  31. Published

    The Quadratic Shortest Path Problem: Complexity, Approximability, and Solution Methods

    Rostami, B., Chassein, A., Hopf, M., Frey, D., Buchheim, C., Malucelli, F. & Goerigk, M., 16/07/2018, In : European Journal of Operational Research. 268, 2, p. 473-485 13 p.

    Research output: Contribution to journalJournal article

  32. Published

    A heuristic for maximising energy efficiency in OFDMA systems with QoS constraints

    Letchford, A. N., Ni, Q. & Zhong, Z., 1/07/2018, Combinatorial Optimization: 5th International Symposium. Lee, J., Rinaldi, G. & Mahjoub, A. R. (eds.). Springer, p. 303-312 10 p. (Lecture Notes in Computer Science; vol. 10856).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter (peer-reviewed)

  33. Published

    A note on the 2-circulant inequalities for the max-cut problem

    Kaparis, K. & Letchford, A. N., 07/2018, In : Operations Research Letters. 46, 4, p. 443-447 5 p.

    Research output: Contribution to journalJournal article

  34. Published

    A two-level graph partitioning problem arising in mobile wireless communications

    Fairbrother, J., Letchford, A. N. & Briggs, K., 04/2018, In : Computational Optimization and Applications. 69, 3, p. 653-676 24 p.

    Research output: Contribution to journalJournal article

  35. Published

    Disruption management in vehicle routing and scheduling for road freight transport: a review

    Eglese, R. W. & Zambirinis, S., 04/2018, In : TOP. 26, 1, p. 1-17 17 p.

    Research output: Contribution to journalJournal article

  36. E-pub ahead of print

    Compromise Solutions for Robust Combinatorial Optimization with Variable-Sized Uncertainty

    Chassein, A. & Goerigk, M., 5/02/2018, In : European Journal of Operational Research. 269, 2, p. 544-555 12 p.

    Research output: Contribution to journalJournal article

  37. Published

    A Multi-Objective Integer Approach for Optimizing Trajectory Based Operations (TBO)

    Dal Sasso, V., Djeumou Fomeni, F., Lulli, G., Murgese, G. & Zografos, K. G., 8/01/2018.

    Research output: Contribution to conference - Without ISBN/ISSN Conference paper

  38. Published

    On the Development of a Fair and Efficient Slot Scheduling Mechanism at Congested Airports

    Fairbrother, J. & Zografos, K. G., 7/01/2018.

    Research output: Contribution to conference - Without ISBN/ISSN Conference paper

  39. Published

    A State Transition MIP Formulation for the Unit Commitment Problem

    Atakan, S., Lulli, G. & Sen, S., 01/2018, In : IEEE Transactions on Power Systems. 33, 1, p. 736-748 13 p.

    Research output: Contribution to journalJournal article

  40. Unpublished

    Non-parametric dynamic pricing: a non-adversarial robust optimization approach

    Dokka Venkata Satyanaraya, T., Jacko, P. & Aslam, W., 2018, (Unpublished) Lancaster: Lancaster University Management School, (Lancaster University Management School Working Paper ; vol. 2018, no. 3).

    Research output: Working paper

  41. Published

    Optimal resource allocation In base stations for mobile wireless communications

    Zhong, Z., 2018, Lancaster University. 100 p.

    Research output: ThesisDoctoral Thesis

  42. 2017
  43. Published

    Convergence and polynomiality of primal-dual interior-point algorithms for linear programming with selective addition of inequalities

    Engau, A. & Anjos, M. F., 12/2017, In : Optimization. 66, 12, p. 2063-2086 24 p.

    Research output: Contribution to journalJournal article

  44. Published

    Projection results for the k-partition problem

    Fairbrother, J. & Letchford, A. N., 8/11/2017, In : Discrete Optimization. 26, p. 97-111 15 p.

    Research output: Contribution to journalJournal article

  45. Published

    A note on representations of linear inequalities in non-convex mixed-integer quadratic programs

    Letchford, A. N. & Grainger, D., 6/11/2017, In : Operations Research Letters. 45, 6, p. 631-634 4 p.

    Research output: Contribution to journalJournal article

  46. Published

    An exact algorithm for a resource allocation problem in mobile wireless communications

    Letchford, A. N., Ni, Q. & Zhong, Z., 09/2017, In : Computational Optimization and Applications. 68, 2, p. 193-208 16 p.

    Research output: Contribution to journalJournal article

  47. Published

    On the Lovász theta function and some variants

    Galli, L. & Letchford, A. N., 27/07/2017, In : Discrete Optimization. 25, p. 159-174 16 p.

    Research output: Contribution to journalJournal article

  48. Published

    Proper efficiency and tradeoffs in multiple criteria and stochastic optimization

    Engau, A., 2017, In : Mathematics of Operations Research. 42, 1, p. 119-134 16 p.

    Research output: Contribution to journalJournal article

  49. 2016
  50. Published

    Strengthening Chvátal-Gomory cuts for the stable set problem

    Letchford, A. N., Marzi, F., Rossi, F. & Smriglio, S., 10/09/2016, Combinatorial Optimization: 4th International Symposium, ISCO 2016, Vietri sul Mare, Italy, May 16-18, 2016, Revised Selected Papers. Cerulli, R., Fujishige, S. & Mahjoub, A. R. (eds.). Berlin: Springer, p. 201-212 12 p. (Lecture Notes in Computer Science; vol. 9849).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter (peer-reviewed)

  51. Published

    Tie-breaking can maximize fairness without sacrificing throughput in D2D-assisted networks

    Mancuso, V., Asadi, A. & Jacko, P., 26/07/2016, WoWMoM 2016 - 17th International Symposium on a World of Wireless, Mobile and Multimedia Networks. Institute of Electrical and Electronics Engineers Inc., 7523498

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paper

  52. Published

    Some hard combinatorial optimisation problems from mobile wireless communications

    Letchford, A. N., 18/05/2016. 2 p.

    Research output: Contribution to conference - Without ISBN/ISSN Conference paper

  53. Published

    Stronger multi-commodity flow formulations of the (capacitated) sequential ordering problem

    Letchford, A. & Salazar Gonzalez, J. J., 16/05/2016, In : European Journal of Operational Research. 251, 1, p. 74-84 11 p.

    Research output: Contribution to journalJournal article

  54. 2015
  55. Published

    The Steiner travelling salesman problem with correlated costs

    Letchford, A. & Nasiri, S., 16/08/2015, In : European Journal of Operational Research. 245, 1, p. 62–69 8 p.

    Research output: Contribution to journalJournal article

  56. Published

    Ellipsoidal relaxations of the stable set problem: theory and algorithms

    Giandomenico, M., Letchford, A., Rossi, F. & Smriglio, S., 1/08/2015, In : SIAM Journal on Optimization. 25, 3, p. 1944-1963 20 p.

    Research output: Contribution to journalJournal article

  57. Published

    Stronger multi-commodity flow formulations of the capacitated vehicle routing problem

    Letchford, A. & Salazar Gonzalez, J. J., 1/08/2015, In : European Journal of Operational Research. 244, 3, p. 730-738 9 p.

    Research output: Contribution to journalJournal article

  58. Published

    The simple plant location problem: new inequalities, facets and separation algorithms

    Letchford, A., Galli, L. & Miller, S., 13/07/2015.

    Research output: Contribution to conference - Without ISBN/ISSN Conference paper

  59. Published

    A cut-and-branch algorithm for the quadratic knapsack problem

    Letchford, A., Djeumou Fomeni, F. & Kaparis, K., 15/06/2015.

    Research output: Contribution to conference - Without ISBN/ISSN Conference paper

  60. Published

    Definition and characterization of Geoffrion proper efficiency for real vector optimization with infinitely many criteria

    Engau, A., 05/2015, In : Journal of Optimization Theory and Applications. 165, 2, p. 439-457 19 p.

    Research output: Contribution to journalJournal article

  61. Published

    Multicriteria modeling and tradeoff analysis for oil load dispatch and hauling operations at Noble Energy

    Engau, A., 03/2015, In : Optimization and Engineering. 16, 1, p. 73-101 29 p.

    Research output: Contribution to journalJournal article

  62. Published

    Cutting planes for RLT relaxations of mixed 0-1 polynomial programs

    Djeumou Fomeni, F., Kaparis, K. & Letchford, A., 2015, In : Mathematical Programming. 151, 2, p. 639–658 20 p.

    Research output: Contribution to journalJournal article

  63. 2014
  64. Published

    Pricing routines for vehicle routing with time windows on road networks

    Letchford, A., Nasiri, S. D. & Oukil, A., 11/2014, In : Computers and Operations Research. 51, p. 331-337 7 p.

    Research output: Contribution to journalJournal article

  65. Published

    A new separation algorithm for the Boolean quadric and cut polytopes

    Letchford, A. & Sorensen, M. M., 2/08/2014, In : Discrete Optimization. 14, p. 61-71 11 p.

    Research output: Contribution to journalJournal article

  66. Published

    An aggressive reduction scheme for the simple plant location problem

    Letchford, A. & Miller, S., 1/05/2014, In : European Journal of Operational Research. 234, 3, p. 674-682 9 p.

    Research output: Contribution to journalJournal article

  67. Published

    A compact variant of the QCR method for quadratically constrained quadratic 0-1 programs

    Galli, L. & Letchford, A., 04/2014, In : Optimization Letters. 8, 4, p. 1213-1224 12 p.

    Research output: Contribution to journalJournal article

  68. Published

    Some experiences with solving semidefinite programming relaxations of binary quadratic optimization models in computational biology

    Engau, A., 27/03/2014, In : Asia-Pacific Journal of Operational Research. 31, 4, 18 p., 1450022.

    Research output: Contribution to journalJournal article

  69. Published

    Unbounded convex sets for non-convex mixed-integer quadratic programming

    Burer, S. & Letchford, A., 1/02/2014, In : Mathematical Programming. 143, 1-2, p. 231-256 26 p.

    Research output: Contribution to journalJournal article

  70. Published

    A dynamic programming heuristic for the quadratic knapsack problem

    Djeumou Fomeni, F. & Letchford, A., 02/2014, In : INFORMS Journal on Computing. 26, 1, p. 173-182 10 p.

    Research output: Contribution to journalJournal article

  71. Published

    Iterated Chvatal-Gomory cuts and the geometry of numbers

    Aliev, I. & Letchford, A., 2014, In : SIAM Journal on Optimization. 24, 3, p. 1294-1312 19 p.

    Research output: Contribution to journalJournal article

  72. Published

    Pricing routines for vehicle routing with time windows on road networks

    Letchford, A. & Nasiri, S. D., 2014, Lancaster University: The Department of Management Science, 20 p. (Lancaster University Management School Working Paper Series; vol. 2014, no. 2).

    Research output: Working paper

  73. 2013
  74. Published

    A polyhedral approach to the single row facility layout problem

    Amaral, A. R. S. & Letchford, A., 10/2013, In : Mathematical Programming. 141, 1-2, p. 453-477 25 p.

    Research output: Contribution to journalJournal article

  75. Published

    Computing upper bounds for the stable set problem using Lagrangian relaxation

    Letchford, A., 05/2013.

    Research output: Contribution to conference - Without ISBN/ISSN Conference paper

  76. Published

    Compact formulations of the Steiner traveling salesman problem and related problems

    Letchford, A. & Nasiri, S. D., 2013, In : European Journal of Operational Research. 228, 1, p. 83-92 10 p.

    Research output: Contribution to journalJournal article

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