Incentive-compatible mechanisms for norm monitoring in open multi-agent systems

We consider the problem of detecting norm violations in open multi-agent systems (MAS).We show how, using ideas from scrip systems, we can design mechanisms where the agents comprising the MAS are incentivised to monitor the actions of other agents for norm violations. The cost of providing the ince...

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Main Authors: Alechina, Natasha, Halpern, Joseph Y., Kash, Ian A., Logan, Brian
Format: Article
Published: Association for the Advancement of Artificial Intelligence 2018
Online Access:https://eprints.nottingham.ac.uk/52649/
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author Alechina, Natasha
Halpern, Joseph Y.
Kash, Ian A.
Logan, Brian
author_facet Alechina, Natasha
Halpern, Joseph Y.
Kash, Ian A.
Logan, Brian
author_sort Alechina, Natasha
building Nottingham Research Data Repository
collection Online Access
description We consider the problem of detecting norm violations in open multi-agent systems (MAS).We show how, using ideas from scrip systems, we can design mechanisms where the agents comprising the MAS are incentivised to monitor the actions of other agents for norm violations. The cost of providing the incentives is not borne by the MAS and does not come from fines charged for norm violations (fines may be impossible to levy in a system where agents are free to leave and rejoin again under a different identity). Instead, monitoring incentives come from (scrip) fees for accessing the services provided by the MAS. In some cases, perfect monitoring (and hence enforcement) can be achieved: no norms will be violated in equilibrium. In other cases, we show that, while it is impossible to achieve perfect enforcement, we can get arbitrarily close; we can make the probability of a norm violation in equilibrium arbitrarily small. We show using simulations that our theoretical results, which apply to systems with a large number of agents, hold for multi-agent systems with as few as 1000 agents—the system rapidly converges to the steady-state distribution of scrip tokens necessary to ensure monitoring and then remains close to the steady state.
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spelling nottingham-526492020-05-04T19:39:49Z https://eprints.nottingham.ac.uk/52649/ Incentive-compatible mechanisms for norm monitoring in open multi-agent systems Alechina, Natasha Halpern, Joseph Y. Kash, Ian A. Logan, Brian We consider the problem of detecting norm violations in open multi-agent systems (MAS).We show how, using ideas from scrip systems, we can design mechanisms where the agents comprising the MAS are incentivised to monitor the actions of other agents for norm violations. The cost of providing the incentives is not borne by the MAS and does not come from fines charged for norm violations (fines may be impossible to levy in a system where agents are free to leave and rejoin again under a different identity). Instead, monitoring incentives come from (scrip) fees for accessing the services provided by the MAS. In some cases, perfect monitoring (and hence enforcement) can be achieved: no norms will be violated in equilibrium. In other cases, we show that, while it is impossible to achieve perfect enforcement, we can get arbitrarily close; we can make the probability of a norm violation in equilibrium arbitrarily small. We show using simulations that our theoretical results, which apply to systems with a large number of agents, hold for multi-agent systems with as few as 1000 agents—the system rapidly converges to the steady-state distribution of scrip tokens necessary to ensure monitoring and then remains close to the steady state. Association for the Advancement of Artificial Intelligence 2018-06-06 Article PeerReviewed Alechina, Natasha, Halpern, Joseph Y., Kash, Ian A. and Logan, Brian (2018) Incentive-compatible mechanisms for norm monitoring in open multi-agent systems. Journal of Artificial Intelligence Research, 62 . ISSN 1943-5037 https://par.nsf.gov/biblio/10059137
spellingShingle Alechina, Natasha
Halpern, Joseph Y.
Kash, Ian A.
Logan, Brian
Incentive-compatible mechanisms for norm monitoring in open multi-agent systems
title Incentive-compatible mechanisms for norm monitoring in open multi-agent systems
title_full Incentive-compatible mechanisms for norm monitoring in open multi-agent systems
title_fullStr Incentive-compatible mechanisms for norm monitoring in open multi-agent systems
title_full_unstemmed Incentive-compatible mechanisms for norm monitoring in open multi-agent systems
title_short Incentive-compatible mechanisms for norm monitoring in open multi-agent systems
title_sort incentive-compatible mechanisms for norm monitoring in open multi-agent systems
url https://eprints.nottingham.ac.uk/52649/
https://eprints.nottingham.ac.uk/52649/