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Mechanism design for defense coordination in security games

Abstract:
Recent work studied Stackelberg security games with multiple defenders, in which heterogeneous defenders allocate security resources to protect a set of targets against a strategic attacker. Equilibrium analysis was conducted to characterize outcomes of these games when defenders act independently. Our starting point is the observation that the use of resources in equilibria may be inefficient due to lack of coordination. We explore the possibility of reducing this inefficiency by coordinating the defenders-specifically, by pooling the defenders' resources and allocating them jointly. The defenders' heterogeneous preferences then give rise to a collective decision-making problem, which calls for a mechanism to generate joint allocation strategies. We seek a mechanism that encourages coordination, produces efficiency gains, and incentivizes the defenders to report their true preferences and to execute the recommended strategies. Our results show that, unfortunately, even these basic properties clash with each other and no mechanism can achieve them simultaneously, which reveals the intrinsic difficulty of achieving meaningful defense coordination in security games. On the positive side, we put forward mechanisms that fulfill some of these properties and we identify special cases of our setting where more of these properties are compatible.
Publication status:
Published
Peer review status:
Peer reviewed

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Publication website:
https://dl.acm.org/doi/abs/10.5555/3398761.3398812

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Institution:
University of Oxford
Oxford college:
Jesus College
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Computer Science
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Computer Science
Role:
Author
ORCID:
0000-0002-9329-8410


Publisher:
International Foundation for Autonomous Agents and Multiagent Systems
Host title:
AAMAS '20: Proceedings of the 19th International Conference on Autonomous Agents and MultiAgent Systems
Pages:
402-410
Publication date:
2020-05-05
Acceptance date:
2020-01-15
Event title:
19th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2020)
Event location:
Auckland, New Zealand
Event website:
https://aamas2020.conference.auckland.ac.nz/
Event start date:
2020-05-09
Event end date:
2020-05-13
EISSN:
1558-2914
ISSN:
1548-8403
ISBN:
9781450375184


Language:
English
Keywords:
Pubs id:
1148903
Local pid:
pubs:1148903
Deposit date:
2021-04-19

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