TitlePropagation of Opinions in Structural Graphs
Publication TypeConference Paper
Year of Publication2010
AuthorsOsman N, Sierra C, Sabater-Mir J.
Conference NameNineteenth European Conference on Artificial Intelligence (ECAI '10)
PublisherIOS Press
Conference LocationLisbon, Portugal
Date Published16/08/2010
Abstract

Trust and reputation measures are crucial in distributed open systems where agents need to decide whom or what to choose. Existing work has mainly focused on the reputation of single entities, neglecting their position amongst others and its effect on the propagation of trust. This paper presents an algorithm for the propagation of reputation in structural graphs. It allows agents to infer their opinion about unfamiliar entities based on their view of related entities. The proposed mechanism focuses on the "part of" relation to illustrate how reputation may ?ow (or propagate) from one entity to another. The paper bases its reputation measures on opinions, which it defines as probability distributions over an evaluation space, providing a richer representation of opinions.