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

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

  3. 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

  4. 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

  5. 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/ISSN › Chapter (peer-reviewed) › peer-review

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. Published

    Biperspective functions for mixed-integer fractional programs with indicator variables

    Letchford, A., Ni, Q. & Zhong, Z., 30/11/2021, In: Mathematical Programming. 190, 1-2, p. 39-55 17 p.

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

  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

    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

  14. 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

  15. Published

    The Boolean quadric polytope

    Letchford, A., 1/05/2022, The Quadratic Unconstrained Binary Optimization Problem: Theory, Algorithms, and Applications. Punnen, A. (ed.). Cham, Switzerland: Springer, p. 97-120 24 p.

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter (peer-reviewed) › peer-review

  16. Published

    On some lower bounds for the permutation flowshop problem

    Letchford, A., Dang, T. & Caceres Gelvez, S., 30/11/2023, In: Computers and Operations Research. 159, 9 p., 106320.

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

  17. Published

    On comb separation for the TSP

    Letchford, A., 10/01/1999, p. 4. 1 p.

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

  18. Published

    Bi-perspective cuts for mixed-integer fractional programs with indicator variables

    Letchford, A., 07/2018.

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

  19. 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

  20. Published

    On the multiple knapsack assignment problem

    Letchford, A., 08/2022.

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

  21. Published

    On upper bounds for the multiple knapsack assignment problem

    Letchford, A., 04/2023.

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

  22. Published

    A sum-of-squares approach to achieving fairness in combinatorial optimisation

    Letchford, A., 04/2018.

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

  23. Published

    On a variant of the change-making problem

    Letchford, A. & Cheng, L., 30/11/2024, In: Operations Research Letters. 57, 3 p., 107165.

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

  24. Published

    New facets of the clique partitioning polytope

    Letchford, A. & Soerensen, M., 6/03/2025, In: Operations Research Letters. 59, 4 p., 107242.

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

  25. Forthcoming

    MIP Formulations of Piece-wise Polyhedral Relaxations of AC Power Flow Equations

    Li, L., Dokka, T. & Lulli, G., 23/02/2023, (Accepted/In press) 2023 IEEE PES General Meeting. IEEE, p. 1-5 5 p.

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

  26. Forthcoming

    Solving Optimal Transmission Switching Problem via DC Power Flow Approximation

    Li, L., Dokka Venkata Satyanaraya, T. & Lulli, G., 23/02/2023, (Accepted/In press) 2023 IEEE PES General Meeting. IEEE, p. 1-5 5 p.

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

  27. Forthcoming

    Strengthening the Conic Quadratic Relaxation of the Optimal Transmission Switching Problem

    Li, L. & Lulli, G., 23/03/2025, (Accepted/In press).

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

  28. Published

    Newsvendor problems: An integrated method for estimation and optimisation

    Liu, C., Letchford, A. & Svetunkov, I., 16/07/2022, In: European Journal of Operational Research. 300, 2, p. 590-601 12 p.

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

  29. Published

    Extensions to Newsvendor Problems

    Liu, C., 2023, Lancaster University. 172 p.

    Research output: Thesis › Doctoral Thesis

  30. 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/ISSN › Conference contribution/Paper › peer-review

  31. Forthcoming

    On the value of holistic decision-making and contracted logistics procurement in complex supply chains

    Lyu, J., Arslan, A. & Lulli, G., 24/02/2025, (Accepted/In press).

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

  32. 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/ISSN › Conference contribution/Paper › peer-review

  33. Published

    Combinatorial Optimisation: Relaxation, Duality and Heuristics

    Mansoor, M. H., 2022, Lancaster University. 134 p.

    Research output: Thesis › Doctoral Thesis

  34. Published

    The algorithm selection problem for solving Sudoku with metaheuristics

    Notice, D., Kheiri, A. & Pavlidis, N., 3/07/2023.

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

  35. Published

    Operational research: methods and applications

    Petropoulos, F., Laporte, G., Archetti, C., Ayhan, H., Battarra, M., Bennell, J. A., Boylan, J. E., Breton, M., Canca, D., Charlin, L., Chen, B., Cicek, C. T., Jr, L. A. C., Currie, C. S. M., Demeulemeester, E., Ding, L., Disney, S. M., Ehrgott, M., Eppler, M. J. & Erdoğan, G. & 59 others, Fortz, B., Franco, L. A., Frische, J., Greco, S., Gregory, A. J., Hämäläinen, R. P., Herroelen, W., Hewitt, M., Holmström, J., Hooker, J. N., Işık, T., Johnes, J., Kara, B. Y., Karsu, Ö., Kent, K., Köhler, C., Kunc, M., Kuo, Y.-H., Lienert, J., Letchford, A. N., Leung, J., Li, D., Li, H., Ljubić, I., Lodi, A., Lozano, S., Lurkin, V., Martello, S., McHale, I. G., Midgley, G., Morecroft, J. D. W., Mutha, A., Oğuz, C., Petrovic, S., Pferschy, U., Psaraftis, H. N., Rose, S., Saarinen, L., Salhi, S., Song, J.-S., Sotiros, D., Stecke, K. E., Strauss, A. K., Tarhan, İ., Thielen, C., Toth, P., Berghe, G. V., Vasilakis, C., Vaze, V., Vigo, D., Virtanen, K., Wang, X., Weron, R., White, L., Woensel, T. V., Yearworth, M., Yıldırım, E. A., Zaccour, G. & Zhao, X., 1/03/2024, In: Journal of the Operational Research Society. 75, 3, p. 423-617 195 p.

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

  36. Published

    A generic approach to conference scheduling with integer programming

    Pylyavskyy, Y., Jacko, P. & Kheiri, A., 1/09/2024, In: European Journal of Operational Research. 317, 2, p. 487-499 13 p.

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

  37. 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

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

  39. 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

  40. Published

    Performance evaluation of scheduling policies for the Dynamic and Stochastic Resource-Constrained Multi-Project Scheduling Problem

    Satic, U., Jacko, P. & Kirkbride, C., 28/02/2022, In: International Journal of Production Research. 60, 4, p. 1411-1423 13 p.

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

  41. Published

    A simulation-based approximate dynamic programming approach to dynamic and stochastic resource-constrained multi-project scheduling problem

    Satic, U., Jacko, P. & Kirkbride, C., 1/06/2024, In: European Journal of Operational Research. 315, 2, p. 454-469 16 p.

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

  42. Published

    CP-Lib: Benchmark instances of the clique partitioning problem

    Sorensen, M. & Letchford, A., 1/03/2024, In: Mathematical Programming Computation. 16, 1, p. 93-111 19 p., 1.

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

  43. 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

  44. Published

    Metaheuristics “In the Large”

    Swan, J., Adriaensen, S., Brownlee, A. E. I., Hammond, K., Johnson, C. G., Kheiri, A., Krawiec, F., Merelo, J. J., Minku, L. L., Özcan, E., Pappa, G. L., García-Sánchez, P., Sörensen, K., Voß, S., Wagner, M. & White, D. R., 31/03/2022, In: European Journal of Operational Research. 297, 2, p. 393-406 14 p.

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

  45. 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

  46. Published

    Bandit Procedures for Designing Patient-Centric Clinical Trials

    Villar, S. S. & Jacko, P., 21/09/2022, Springer Series in Supply Chain Management. Chen, X., Jasin, S. & Shi, C. (eds.). 1 ed. London: Springer Nature, p. 365-389 25 p. (Springer Series in Supply Chain Management; vol. 18).

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter

  47. 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

  48. Published

    Bayesian bandit models for the design of clinical trials

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

    Research output: Thesis › Doctoral Thesis

  49. Published

    Generalisations of a Bayesian decision-theoretic randomisation procedure and the impact of delayed responses

    Williamson, S. F., Jacko, P. & Jaki, T., 31/10/2022, In: Computational Statistics and Data Analysis. 174, 26 p., 107407.

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

  50. Published

    Stochastic Models for Dynamic Resource Allocation

    Yarahmadi, A., 22/02/2023, Lancaster University. 197 p.

    Research output: Thesis › Doctoral Thesis

  51. Published

    Optimal resource allocation In base stations for mobile wireless communications

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

    Research output: Thesis › Doctoral Thesis

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