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Stable and Pareto optimal group activity selection from ordinal preferences

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  • Andreas Darmann

    (Karl-Franzens Universität Graz)

Abstract

In several situations agents need to be assigned to activities on basis of their preferences, and each agent can take part in at most one activity. Often, the preferences of the agents do not depend only on the activity itself but also on the number of participants in the respective activity. In the setting we consider, the agents hence have preferences over pairs “(activity, group size)” including the possibility “do nothing”; in this work, these preferences are assumed to be strict orders. The task will be to find stable assignments of agents to activities, for different concepts of stability such as Nash or core stability, and Pareto optimal assignments respectively. In this respect, particular focus is laid on two natural special cases of agents’ preferences inherent in the considered model, namely increasing and decreasing preferences, where agents want to share an activity with as many (as few, respectively) agents as possible.

Suggested Citation

  • Andreas Darmann, 2018. "Stable and Pareto optimal group activity selection from ordinal preferences," International Journal of Game Theory, Springer;Game Theory Society, vol. 47(4), pages 1183-1209, November.
    • Handle: RePEc:spr:jogath:v:47:y:2018:i:4:d:10.1007_s00182-018-0612-3
    DOI: 10.1007/s00182-018-0612-3
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    References listed on IDEAS

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    1. Dinko Dimitrov & Peter Borm & Ruud Hendrickx & Shao Sung, 2006. "Simple Priorities and Core Stability in Hedonic Games," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 26(2), pages 421-433, April.
    2. Ballester, Coralio, 2004. "NP-completeness in hedonic games," Games and Economic Behavior, Elsevier, vol. 49(1), pages 1-30, October.
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    4. Aziz, Haris & Brandt, Felix & Harrenstein, Paul, 2013. "Pareto optimality in coalition formation," Games and Economic Behavior, Elsevier, vol. 82(C), pages 562-581.
    5. Tayfun Sönmez & Suryapratim Banerjee & Hideo Konishi, 2001. "Core in a simple coalition formation game," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 18(1), pages 135-153.
    6. Darmann, Andreas, 2018. "A social choice approach to ordinal group activity selection," Mathematical Social Sciences, Elsevier, vol. 93(C), pages 57-66.
    7. Morrill, Thayer, 2010. "The roommates problem revisited," Journal of Economic Theory, Elsevier, vol. 145(5), pages 1739-1756, September.
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    Cited by:

    1. Ágnes Cseh & Tamás Fleiner & Petra Harján, 2019. "Pareto Optimal Coalitions of Fixed Size," The Journal of Mechanism and Institution Design, Society for the Promotion of Mechanism and Institution Design, University of York, vol. 4(1), pages 87-108, November.
    2. Darmann, Andreas, 2018. "A social choice approach to ordinal group activity selection," Mathematical Social Sciences, Elsevier, vol. 93(C), pages 57-66.
    3. Andreas Darmann & Janosch Döcker & Britta Dorn & Sebastian Schneckenburger, 2022. "Simplified group activity selection with group size constraints," International Journal of Game Theory, Springer;Game Theory Society, vol. 51(1), pages 169-212, March.
    4. Agnes Cseh & Tamas Fleiner & Petra Harjan, 2020. "Pareto optimal coalitions of fixed size," CERS-IE WORKING PAPERS 2005, Institute of Economics, Centre for Economic and Regional Studies.
    5. Andreas Darmann, 2019. "Manipulability in a group activity selection problem," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 52(3), pages 527-557, March.

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