Minority Health Archive

REPUTATION FORMALIZATION FOR AN INFORMATION-SHARING MULTI-AGENT SYSTEM

Carter, Jonathan and Bitting, Ellijah and Ghorbani, Ali (2002) REPUTATION FORMALIZATION FOR AN INFORMATION-SHARING MULTI-AGENT SYSTEM. Computational Intelligence, 18 (4). pp. 515-534.

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Abstract

We propose that through the formalization of concepts related to trust, a more accurate model of trust can be implemented. This paper presents a new model of trust that is based on the formalization of reputation. A multidisciplinary approach is taken to understanding the nature of trust and its relation to reputation. Through this approach, a practical definition of reputation is adopted from sociological contexts and a model of reputation is designed and presented. Reputation is defined as role fulfillment. To formalize reputation, it is necessary to formalize the expectations placed upon an agent within a particular multi-agent system (MAS). In this case, the agents are part of an informationsharing society. Five roles are defined along with the ways in which these roles are objectively fulfilled. Through the measurement of role fulfillment, a vector representing reputation can be developed. This vector embodies the magnitude of the reputation and describes the patterns of behavior associated with the direction of the vector. Experiments are conducted to verify the sensibility of the proposed models for role fulfillment and overall reputation. The simulation results show that the roles, defined for building reputation in an information-sharing MAS environment, react to different agent and user actions in a manner consistent with the formal definitions.


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Item Type: Article
Additional Information: This article is available at the publisher’s Web site. Access to the full text is subject to the publisher’s access restrictions.
Uncontrolled Keywords: agent, information sharing, multi-agent systems, reputation, trust
Subjects: Research
Teaching > Instructional Tools & Models
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Depositing User: Jamie Bialor
Date Deposited: 05 Jan 2010
Last Modified: 12 Jan 2012 10:32
Link to this item (URI): http://health-equity.pitt.edu/id/eprint/1299

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