Survey of Trust Management on Various Networks

Trust representation and management has been studied in in the context of various information for a long time. Originally a digital equivalent of human trust, trust in information system is used for different purposes. In this paper we surveyed studies on how trust is represented and managed in previous trust/reputation systems. We focus on how trust in information systems is formed-manually or automatically, how trust is represented according to metrics used, and how trust is managed when transitivity is concerned. Furthermore, we investigated the characteristics of each design choice. Finally, we briefly reviewed typical architectures of trust management systems, and critical issues that affects their performance and robustness.