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  1. 2021
  2. Published

    Operational Strategies for on-demand personal shopper services

    Arslan, A., Agatz, N. & Klapp, M. A., 30/09/2021, In: Transportation Research Part C: Emerging Technologies . 130, 17 p., 103320.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  3. Published

    A separation algorithm for the simple plant location problem

    Galli, L. & Letchford, A., 31/07/2021, In: Operations Research Letters. 49, 4, p. 610-615 6 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  4. Published

    On the complexity of surrogate and group relaxation for integer linear programs

    Dokka, T., Letchford, A. & Mansoor, H., 31/07/2021, In: Operations Research Letters. 49, 4, p. 530-534 5 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  5. Published

    Strengthened clique-family inequalities for the stable set polytope  

    Letchford, A. & Ventura, P., 31/07/2021, In: Operations Research Letters. 49, 4, p. 586-589 4 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  6. Published

    A Matheuristic Approach for Finding Effective Base Locations and Team Configurations for North West Air Ambulance

    Boyacı, B., Nayeem, M. A. & Kheiri, A., 8/07/2021, GECCO '21: Proceedings of the Genetic and Evolutionary Computation Conference Companion. Chicano, F. (ed.). New York: ACM, p. 1817-1824 8 p.

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

  7. Published

    A hyper-heuristic approach based upon a hidden Markov model for the multi-stage nurse rostering problem

    Kheiri, A., Gretsista, A., Keedwell, E., Lulli, G., Epitropakis, M. & Burke, E., 1/06/2021, In: Computers and Operations Research. 130, 14 p., 105221.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  8. Published

    A reinforcement learning hyper-heuristic for water distribution network optimisation

    Ahmed, A. O. M., Osman, S. M. Y., Yousif, T. E. H. & Kheiri, A., 17/05/2021, 2020 International Conference on Computer, Control, Electrical, and Electronics Engineering (ICCCEEE). IEEE, 4 p.

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

  9. Published

    Vehicle routing on road networks: how good is Euclidean approximation?

    Boyacı, B., Dang, T. & Letchford, A., 1/05/2021, In: Computers and Operations Research. 129, 13 p., 105197.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  10. Published

    Facets from gadgets

    Letchford, A. & Vu, A., 1/01/2021, In: Mathematical Programming. 185, 1-2, p. 297-314 18 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  11. 2020
  12. Published

    The stable set problem: clique and nodal inequalities revisited

    Letchford, A., Rossi, F. & Smriglio, S., 30/11/2020, In: Computers and Operations Research. 123, 16 p., 105024.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  13. Published

    Performance evaluation of scheduling policies for the DRCMPSP

    Satic, U., Jacko, P. & Kirkbride, C., 7/11/2020, Analytical and Stochastic Modelling Techniques and Applications: 25th International Conference, ASMTA 2019, Moscow, Russia, October 21–25, 2019, Proceedings. Cham: Springer, p. 100-114 15 p. (Lecture Notes in Computer Science ; vol. 12023).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

  14. Published

    Efficient Adaptive Designs for Clinical Trials of Interventions for COVID-19

    Stallard, N., Hampson, L., Benda, N., Brannath, W., Burnett, T., Friede, T., Kimani, P. K., Koenig, F., Krisam, J., Mozgunov, P., Posch, M., Wason, J., Wassmer, G., Whitehead, J., Williamson, S. F., Zohar, S. & Jaki, T., 1/10/2020, In: Statistics in Biopharmaceutical Research. 12, 4, p. 483-497 15 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  15. Published

    Particle Swarm Metaheuristics for Robust Optimisation with Implementation Uncertainty

    Hughes, M., Goerigk, M. & Dokka Venkata Satyanaraya, T., 1/10/2020, In: Computers and Operations Research. 122, 21 p., 104998.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  16. Published

    Exact and hyper-heuristic solutions for the distribution-installation problem from the VeRoLog 2019 challenge

    Kheiri, A., Ahmed, L., Boyacı, B., Gromicho, J., Mumford, C., Özcan, E. & Dirikoc, A. S., 1/09/2020, In: Networks. 76, 2, p. 294-319 26 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  17. Published

    Lifting the knapsack cover inequalities for the knapsack polytope

    Letchford, A. & Souli, G., 1/09/2020, In: Operations Research Letters. 48, 5, p. 607-611 5 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  18. Published

    Mixed uncertainty sets for robust combinatorial optimization

    Dokka, T., Goerigk, M. & Roy, R., 1/09/2020, In: Optimization Letters. 14, p. 1323–1337 15 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  19. Published

    Recent Advances in Selection Hyper-heuristics

    Drake, J. H., Kheiri, A., Özcan, E. & Burke, E. K., 1/09/2020, In: European Journal of Operational Research. 285, 2, p. 405-428 24 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  20. Published

    Using ℓp-norms for fairness in combinatorial optimisation

    Bektas, T. & Letchford, A., 1/08/2020, In: Computers and Operations Research. 120, 11 p., 104975.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  21. Published

    Equilibrium Design by Coarse Correlation in Quadratic Games

    Dokka Venkata Satyanaraya, T., Moulin, H., Ray, I. & Sen Gupta, S., 31/07/2020, Lancaster : Lancaster University, Department of Economics, (Economics Working Papers Series).

    Research output: Working paper

  22. Published

    Metaheuristics for black-box robust optimisation problems

    Hughes, M., 16/07/2020, Lancaster University. 175 p.

    Research output: Thesis › Doctoral Thesis

  23. Published

    On the dynamic allocation of assets subject to failure

    Ford, S., Atkinson, M. P., Glazebrook, K. & Jacko, P., 1/07/2020, In: European Journal of Operational Research. 284, 1, p. 227-239 13 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  24. Published

    Robust and stochastic approaches to network capacity design under demand uncertainty

    Garuba, F., 06/2020, Lancaster University. 180 p.

    Research output: Thesis › Doctoral Thesis

  25. Published

    Adaptive policies for perimeter surveillance problems

    Grant, J. A., Leslie, D. S., Glazebrook, K., Szechtman, R. & Letchford, A., 16/05/2020, In: European Journal of Operational Research. 283, 1, p. 265-278 14 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  26. Published

    Valid inequalities for mixed-integer programmes with fixed charges on sets of variables

    Letchford, A. & Souli, G., 1/05/2020, In: Operations Research Letters. 48, 3, p. 240-244 5 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  27. Published

    An Efficient Approach to Distributionally Robust Network Capacity Planning

    Dokka Venkata Satyanaraya, T., Garuba, F., Goerigk, M. & Jacko, P., 9/04/2020, In: arXiv.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  28. Published

    An Optimisation Framework for Airline Fleet Maintenance Scheduling with Tail Assignment Considerations

    Torres Sanchez, D., Boyacı, B. & Zografos, K. G., 31/03/2020, In: Transportation Research Part B: Methodological. 133, p. 142-164 23 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  29. Published

    A Comparison of Data-Driven Uncertainty Sets for Robust Network Design

    Garuba, F., Goerigk, M. & Jacko, P., 23/03/2020, In: arXiv.

    Research output: Contribution to Journal/Magazine › Journal article

  30. Published

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

    Letchford, A., Ni, Q. & Zhong, Z., 1/02/2020, In: Journal of Heuristics. 26, 1, p. 21-32 12 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  31. Published

    Generating hard instances for robust combinatorial optimization

    Goerigk, M. & Maher, S. J., 1/01/2020, In: European Journal of Operational Research. 280, 1, p. 34-45 12 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  32. Published

    A comparison of discrete and polyhedral uncertainty sets for robust network design

    Garuba, F., Goerigk, M. & Jacko, P., 2020

    Research output: Other contribution

  33. Published

    Bayesian bandit models for the design of clinical trials

    Williamson, S. F., 2020, Lancaster University. 229 p.

    Research output: Thesis › Doctoral Thesis

  34. 2019
  35. 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 Journal/Magazine › Journal article › peer-review

  36. Published

    Operational strategies for on-demand delivery services

    Arslan, A., 21/11/2019, 149 p.

    Research output: Thesis › Doctoral Thesis

  37. Published

    Robust Network Capacity Expansion with Non-linear Costs

    Garuba, F., Goerigk, M. & Jacko, P., 15/11/2019, 19th Symposium on Algorithmic Approaches for Transportation Modelling, Optimization, and Systems, ATMOS 2019. Cacchiani, V. & Marchetti-Spaccamela, A. (eds.). Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik, p. 5.1-5.13 13 p. (OASICS; vol. 75).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review

  38. 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 Journal/Magazine › Journal article › peer-review

  39. E-pub ahead of print

    A response‐adaptive randomization procedure for multi‐armed clinical trials with normally distributed outcomes

    Williamson, S. F. & Villar, S., 19/09/2019, (E-pub ahead of print) In: Biometrics. 13 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  40. 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 Journal/Magazine › Journal article › peer-review

  41. Published

    Convex hulls for mixed-integer quadratic programs with bounded variables

    Letchford, A., 09/2019.

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

  42. 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 Journal/Magazine › Journal article › peer-review

  43. Published

    Modelling and solving the combined inventory routing problem with risk consideration

    Kheiri, A. & Zografos, K. G., 13/07/2019, p. 57-58. 2 p.

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

  44. 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 › peer-review

  45. 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

  46. 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 Journal/Magazine › Journal article › peer-review

  47. Published

    Crowdsourced Delivery—A Dynamic Pickup and Delivery Problem with Ad Hoc Drivers

    Arslan, A., Agatz, N., Kroon, L. & Zuidwijk, R., 31/01/2019, In: Transportation Science. 53, 1, p. 222-235 14 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  48. 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 Journal/Magazine › Journal article › peer-review

  49. 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 Journal/Magazine › Journal article › peer-review

  50. 2018
  51. 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 Journal/Magazine › Journal article › peer-review

  52. 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 Journal/Magazine › Journal article › peer-review

  53. E-pub ahead of print

    Representative scenario construction and preprocessing for robust combinatorial optimization problems

    Goerigk, M. & Hughes, M., 29/10/2018, (E-pub ahead of print) In: Optimization Letters. 15 p.

    Research output: Contribution to Journal/Magazine › Journal article › peer-review

  54. 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 Journal/Magazine › Journal article › peer-review

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