Engaging the dynamics of trust in computational trust and reputation systems

Authors:
Agnieszka Danek;Joana Urbano;Ana Paula Rocha;Eugénio Oliveira
Affiliations:
Faculdade de Engenharia da Universidade do Porto, DEI, Porto, Portugal and Laboratory of Artificial Intelligence and Computer Science at University of Porto;Faculdade de Engenharia da Universidade do Porto, DEI, Porto, Portugal and Laboratory of Artificial Intelligence and Computer Science at University of Porto;Faculdade de Engenharia da Universidade do Porto, DEI, Porto, Portugal and Laboratory of Artificial Intelligence and Computer Science at University of Porto;Faculdade de Engenharia da Universidade do Porto, DEI, Porto, Portugal and Laboratory of Artificial Intelligence and Computer Science at University of Porto
Venue:
KES-AMSTA'10 Proceedings of the 4th KES international conference on Agent and multi-agent systems: technologies and applications, Part I
Year:
2010

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Abstract

Computational Trust and Reputation (CTR) systems are essential in electronic commerce to encourage interactions and suppress deceptive behaviours. This paper focus on comparing two different kinds of approaches to evaluate the trustworthiness of suppliers. One is based on calculating the weighted mean of past results. The second one applies basic properties of the dynamics of trust. Different scenarios are investigated, including a more problematic one that results from introducing newcomers during the simulation. Experimental results presented in this paper prove the benefits of engaging properties of the dynamics of trust in CRT systems, as it noticeably improves the process of business partners' selection and increases the utility.