The University of Southampton
University of Southampton Institutional Repository

Constrained coalition formation

Rahwan, Talal, Michalak, Tomasz, Elkind, Edith, Faliszewski, Piotr, Sroka, Jacek, Wooldridge, Michael and Jennings, Nicholas (2011) Constrained coalition formation At Proceedings of the Twenty-Fifth AAAI Conference on Artificial Intelligence, United States. 07 - 11 Aug 2011. , pp. 719-725.

Record type: Conference or Workshop Item (Other)


The conventional model of coalition formation considers every possible subset of agents as a potential coalition. However, in many real-world applications, there are inherent constraints on feasible coalitions: for instance, certain agents may be prohibited from being in the same coalition, or the coalition structure may be required to consist of coalitions of the same size. In this paper, we present the first systematic study of constrained coalition formation (CCF). We propose a general framework for this problem, and identify an important class of CCF settings, where the constraints specify which groups of agents should/should not work together. We describe a procedure that transforms such constraints into a structured input that allows coalition formation algorithms to identify, without any redundant computations, all the feasible coalitions. We then use this procedure to develop an algorithm for generating an optimal (welfare-maximizing) constrained coalition structure, and show that it outperforms existing state-of-the-art approaches by several orders of magnitude.

PDF main_file_aaai11.pdf - Version of Record
Download (5MB)

More information

Published date: August 2011
Venue - Dates: Proceedings of the Twenty-Fifth AAAI Conference on Artificial Intelligence, United States, 2011-08-07 - 2011-08-11
Organisations: Agents, Interactions & Complexity


Local EPrints ID: 272269
ISBN: 978-1-57735-507-6
PURE UUID: 18fe4882-25cf-4bb9-9bbb-539741feee91

Catalogue record

Date deposited: 11 May 2011 07:55
Last modified: 18 Jul 2017 06:32

Export record


Author: Talal Rahwan
Author: Tomasz Michalak
Author: Edith Elkind
Author: Piotr Faliszewski
Author: Jacek Sroka
Author: Michael Wooldridge
Author: Nicholas Jennings

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.