Article

A multi-dimensional trust model for heterogeneous contract observations

Authors:

Steven Reece,

Stephen Roberts,

Alex Rogers,

Nicholas R. JenningsAuthors Info & Claims

AAAI'07: Proceedings of the 22nd national conference on Artificial intelligence - Volume 1

Pages 128 - 135

Published: 22 July 2007 Publication History

Abstract

In this paper we develop a novel probabilistic model of computational trust that allows agents to exchange and combine reputation reports over heterogeneous, correlated multi-dimensional contracts. We consider the specific case of an agent attempting to procure a bundle of services that are subject to correlated quality of service failures (e.g. due to use of shared resources or infrastructure), and where the direct experience of other agents within the system consists of contracts over different combinations of these services. To this end, we present a formalism based on the Kalman filter that represents trust as a vector estimate of the probability that each service will be successfully delivered, and a covariance matrix that describes the uncertainty and correlations between these probabilities. We describe how the agents' direct experiences of contract outcomes can be represented and combined within this formalism and we empirically demonstrate that our formalism provides significantly better trustworthiness estimates than the alternative of using separate single-dimensional trust models for each separate service (where information regarding the correlations between each estimate is lost).

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Cited By

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Granatyr JBotelho VLessing OScalabrin EBarthès JEnembreck F(2015)Trust and Reputation Models for Multiagent SystemsACM Computing Surveys10.1145/281682648:2(1-42)Online publication date: 12-Oct-2015
https://dl.acm.org/doi/10.1145/2816826
Reches SKalech M(2014)Choosing a Candidate Using Efficient Allocation of Biased InformationACM Transactions on Intelligent Systems and Technology10.1145/25583275:4(1-30)Online publication date: 29-Dec-2014
https://dl.acm.org/doi/10.1145/2558327
Wang YSycara KScerri P(2011)Multi-variate Distributed Data Fusion with Expensive Sensor DataProceedings of the 2011 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Volume 0210.1109/WI-IAT.2011.248(394-401)Online publication date: 22-Aug-2011
https://dl.acm.org/doi/10.1109/WI-IAT.2011.248
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A multi-dimensional trust model for heterogeneous contract observations
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AAAI'07: Proceedings of the 22nd national conference on Artificial intelligence - Volume 1

July 2007

942 pages

ISBN:9781577353232

Editor:
Anthony Cohn
University of Leeds

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AAAI Press

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Published: 22 July 2007

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Granatyr JBotelho VLessing OScalabrin EBarthès JEnembreck F(2015)Trust and Reputation Models for Multiagent SystemsACM Computing Surveys10.1145/281682648:2(1-42)Online publication date: 12-Oct-2015
https://dl.acm.org/doi/10.1145/2816826
Reches SKalech M(2014)Choosing a Candidate Using Efficient Allocation of Biased InformationACM Transactions on Intelligent Systems and Technology10.1145/25583275:4(1-30)Online publication date: 29-Dec-2014
https://dl.acm.org/doi/10.1145/2558327
Wang YSycara KScerri P(2011)Multi-variate Distributed Data Fusion with Expensive Sensor DataProceedings of the 2011 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Volume 0210.1109/WI-IAT.2011.248(394-401)Online publication date: 22-Aug-2011
https://dl.acm.org/doi/10.1109/WI-IAT.2011.248
Urbano JRocha AOliveira E(2010)Trust estimation using contextual fitnessProceedings of the 4th KES international conference on Agent and multi-agent systems: technologies and applications, Part I10.5555/1883838.1883846(42-51)Online publication date: 23-Jun-2010
https://dl.acm.org/doi/10.5555/1883838.1883846
Danek AUrbano JRocha AOliveira E(2010)Engaging the dynamics of trust in computational trust and reputation systemsProceedings of the 4th KES international conference on Agent and multi-agent systems: technologies and applications, Part I10.5555/1883838.1883844(22-31)Online publication date: 23-Jun-2010
https://dl.acm.org/doi/10.5555/1883838.1883844
Matt PMorge MToni FLuck MSen S(2010)Combining statistics and arguments to compute trustProceedings of the 9th International Conference on Autonomous Agents and Multiagent Systems: volume 1 - Volume 110.5555/1838206.1838236(209-216)Online publication date: 10-May-2010
https://dl.acm.org/doi/10.5555/1838206.1838236

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