Trust Propagation Based on Group Opinion

Abstract

Modern technology, especially Internet, allows people to find the resources or knowledge they need by making use of the experiences and opinions of other people. It is easy to collect a vast amount of data, however, a problem of quality and reliability of these data is urgent. Trust networks seem to be the best solution but they need more research and attention. In this paper we join the discussion about trust representation and trust propagation. We follow the idea of modeling trust in gradual and dual form of trust and distrust degrees, using Atanassov's intuitionistic fuzzy sets (IFSs) theory as the basis. Moreover, we introduce a new trust propagation operator based on group opinion and on relative scalar cardinality of IFSs. © Springer-Verlag Berlin Heidelberg 2010.