Dr Rachael Colley

  • Affiliate (School of Computing Science)

Research interests

My research interests broadly involve different types of collective decisions, studying them from multiple perspectives, including computational methods, game theory, and mechanism design. Currently, my focus lies in matching problems, particularly for kidney exchange programmes (you can play this kidney exchange game to understand the problem!). My role in the KidneyAlgo project involves analysing the potential extension of the UK's national kidney exchange programme, focusing on how these extensions could be implemented and their potential impact.
 
Most of my work has been within the field of computational social choice, with a large part of it studying various voting models. My PhD thesis explored many variations of a voting model called liquid democracy, under the supervision of Umberto Grandi (watch a video of me giving an overview of my PhD here). Additionally, I'm interested in the implementation of digital democracy, one highlight being a collaboration in which we created preference elicitation platforms for the French (Mon Programme) and Brazilian (Brazucracia) presidential elections in 2022.
 
 

Research groups

  • Formal Analysis, Theory & Algorithms

Publications

List by: Type | Date

Jump to: 2025 | 2024 | 2023 | 2022 | 2021 | 2020
Number of items: 11.

2025

Barkel, Mathijs, Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Delorme, Maxence, Manlove, David ORCID logoORCID: https://orcid.org/0000-0001-6754-7308 and Pettersson, William ORCID logoORCID: https://orcid.org/0000-0003-0040-2088 (2025) Operational research approaches and mathematical models for kidney exchange: a literature survey and empirical evaluation. European Journal of Operational Research, (doi: 10.1016/j.ejor.2025.08.059) (In Press)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Manlove, David ORCID logoORCID: https://orcid.org/0000-0001-6754-7308, Paulusma, Daniel and Zhang, Mengxiao (2025) Complexity and Manipulation of International Kidney Exchange Programmes with Country-Specific Parameters. In: Twenty-Sixth ACM Conference on Economics and Computation (EC'25), Stanford, CA, USA, 07-10 Jul 2025, pp. 976-995. ISBN 9798400719431 (doi: 10.1145/3736252.3742657)

2024

Boes, Linus, Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto, Lang, Jérôme and Novaro, Arianna (2024) Collective combinatorial optimisation as judgment aggregation. Annals of Mathematics and Artificial Intelligence, 92(6), pp. 1437-1465. (doi: 10.1007/s10472-023-09910-w)

Revel, Manon, Boehmer, Niclas, Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Brill, Markus, Faliszewski, Piotr and Elkind, Edith (2024) Selecting Representative Bodies: An Axiomatic View. In: AAMAS '24: International Conference on Autonomous Agents and Multiagent Systems, Auckland, New Zealand, 6–10 May 2024, pp. 2701-2705. ISBN 9798400704864

Navarrete, C. et al. (2024) Understanding political divisiveness using online participation evidence from the 2022 French and Brazilian presidential elections. Nature Human Behaviour, 8, pp. 137-148. (doi: 10.1038/s41562-023-01755-x) (PMID:37973828)

2023

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Delemazure, Théo and Gilbert, Hugo (2023) Measuring a Priori Voting Power in Liquid Democracy. In: Thirty-Second International Joint Conference on Artificial Intelligence (IJCAI 2023), Macao, S.A.R, 19-25 August 2023, pp. 2607-2615. ISBN 9781956792034 (doi: 10.24963/ijcai.2023/290)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto, Hidalgo, César, Macedo, Mariana and Navarrete, Carlos (2023) Measuring and Controlling Divisiveness in Rank Aggregation. In: Thirty-Second International Joint Conference on Artificial Intelligence (IJCAI 2023), Macao, S.A.R, 19-25 August 2023, pp. 2616-2623. ISBN 978195679-034 (doi: 10.24963/ijcai.2023/291)

2022

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234 and Grandi, Umberto (2022) The Spread of Opinions via Boolean Networks. In: European Conference on Multi-Agent Systems, Düsseldorf, Germany, 14 September 2022, pp. 96-115. ISBN 9783031206139 (doi: 10.1007/978-3-031-20614-6_6)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto and Novaro, Arianna (2022) Unravelling multi-agent ranked delegations. Autonomous Agents and Multi-Agent Systems, 36(1), 9. (doi: 10.1007/s10458-021-09538-2)

2021

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234 (2021) Multi-Agent Ranked Delegations in Voting. In: 20th International Conference on Autonomous Agents and MultiAgent Systems (AAMAS '21), 3-7 May 2021, pp. 1802-1804. ISBN 9781450383073 (doi: 10.5555/3463952.3464244)

2020

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto and Novaro, Arianna (2020) Smart Voting. In: Twenty-Ninth International Joint Conference on Artificial Intelligence (IJCAI-20), 7-15 January 2021, pp. 1734-1740. ISBN 9780999241165 (doi: 10.24963/ijcai.2020/240)

This list was generated on Sun Nov 2 12:10:40 2025 GMT.
Jump to: Articles | Conference Proceedings
Number of items: 11.

Articles

Barkel, Mathijs, Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Delorme, Maxence, Manlove, David ORCID logoORCID: https://orcid.org/0000-0001-6754-7308 and Pettersson, William ORCID logoORCID: https://orcid.org/0000-0003-0040-2088 (2025) Operational research approaches and mathematical models for kidney exchange: a literature survey and empirical evaluation. European Journal of Operational Research, (doi: 10.1016/j.ejor.2025.08.059) (In Press)

Boes, Linus, Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto, Lang, Jérôme and Novaro, Arianna (2024) Collective combinatorial optimisation as judgment aggregation. Annals of Mathematics and Artificial Intelligence, 92(6), pp. 1437-1465. (doi: 10.1007/s10472-023-09910-w)

Navarrete, C. et al. (2024) Understanding political divisiveness using online participation evidence from the 2022 French and Brazilian presidential elections. Nature Human Behaviour, 8, pp. 137-148. (doi: 10.1038/s41562-023-01755-x) (PMID:37973828)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto and Novaro, Arianna (2022) Unravelling multi-agent ranked delegations. Autonomous Agents and Multi-Agent Systems, 36(1), 9. (doi: 10.1007/s10458-021-09538-2)

Conference Proceedings

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Manlove, David ORCID logoORCID: https://orcid.org/0000-0001-6754-7308, Paulusma, Daniel and Zhang, Mengxiao (2025) Complexity and Manipulation of International Kidney Exchange Programmes with Country-Specific Parameters. In: Twenty-Sixth ACM Conference on Economics and Computation (EC'25), Stanford, CA, USA, 07-10 Jul 2025, pp. 976-995. ISBN 9798400719431 (doi: 10.1145/3736252.3742657)

Revel, Manon, Boehmer, Niclas, Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Brill, Markus, Faliszewski, Piotr and Elkind, Edith (2024) Selecting Representative Bodies: An Axiomatic View. In: AAMAS '24: International Conference on Autonomous Agents and Multiagent Systems, Auckland, New Zealand, 6–10 May 2024, pp. 2701-2705. ISBN 9798400704864

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Delemazure, Théo and Gilbert, Hugo (2023) Measuring a Priori Voting Power in Liquid Democracy. In: Thirty-Second International Joint Conference on Artificial Intelligence (IJCAI 2023), Macao, S.A.R, 19-25 August 2023, pp. 2607-2615. ISBN 9781956792034 (doi: 10.24963/ijcai.2023/290)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto, Hidalgo, César, Macedo, Mariana and Navarrete, Carlos (2023) Measuring and Controlling Divisiveness in Rank Aggregation. In: Thirty-Second International Joint Conference on Artificial Intelligence (IJCAI 2023), Macao, S.A.R, 19-25 August 2023, pp. 2616-2623. ISBN 978195679-034 (doi: 10.24963/ijcai.2023/291)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234 and Grandi, Umberto (2022) The Spread of Opinions via Boolean Networks. In: European Conference on Multi-Agent Systems, Düsseldorf, Germany, 14 September 2022, pp. 96-115. ISBN 9783031206139 (doi: 10.1007/978-3-031-20614-6_6)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234 (2021) Multi-Agent Ranked Delegations in Voting. In: 20th International Conference on Autonomous Agents and MultiAgent Systems (AAMAS '21), 3-7 May 2021, pp. 1802-1804. ISBN 9781450383073 (doi: 10.5555/3463952.3464244)

Colley, Rachael ORCID logoORCID: https://orcid.org/0000-0003-1164-4234, Grandi, Umberto and Novaro, Arianna (2020) Smart Voting. In: Twenty-Ninth International Joint Conference on Artificial Intelligence (IJCAI-20), 7-15 January 2021, pp. 1734-1740. ISBN 9780999241165 (doi: 10.24963/ijcai.2020/240)

This list was generated on Sun Nov 2 12:10:40 2025 GMT.

Research datasets

Jump to: 2025
Number of items: 1.

2025

Colley, R. (2025) Complexity and Manipulation of International Kidney Exchange Programmes with Country-Specific Parameters: Data and Code. [Data Collection]

This list was generated on Sun Nov 2 16:04:08 2025 GMT.

Additional information

My personal website can be found here.


Portrait of Rachael Colley