One inherent problem with virtual communities is how to assess the trustworthiness of unknown peers. Reputation based trust mechanisms are one means to help users decide whether to rely on a stranger or not. Using eBay’s feedback forum as an example, we show how simple reputation based trust mechanisms work. We evaluate shortcomings of these mechanisms and give an overview of reasonable enhance...

2 Faculty of Information Technology, University of Technology, Sydney Broadway, Australia [email protected] Abstract. The growing development of web-based reputation systems in the 21 century will have a powerful social and economic impact on both business entities and individual customers, because it makes transparent quality assessment on products and services to achieve customer assurance...

Building trust relationships between peers is an important and difficult part in the security needs of P2P network without a central server. P2P reputation system has been introduced which collects locally generated peer feedbacks and aggregates them to yield global reputation scores. Most P2P applications on the Internet are unstructured, without fast hashing and searching mechanisms, how to p...

Reliable traffic message communication is one of the most essential goals for implementing secure vehicular ad hoc networking environment. In order to support secure traffic message communications, we propose an improved vehicular reputation system that manages the reputations of vehicles and verifies the reliability of traffic messages based on the vehicle reputation. We enhance our previously...

Decision rules of reciprocity include 'I help those who helped me' (direct reciprocity) and 'I help those who have helped others' (indirect reciprocity), i.e. I help those who have a reputation to care for others. A person's reputation is a score that members of a social group update whenever they see the person interacting or hear at best multiple gossip about the person's social interactions....

We present DIAL, a model of group dynamics and opinion dynamics. It features dialogues, in which agents gamble about reputation points. Intra-group radicalisation of opinions appears to be an emergent phenomenon. We position this model within the theoretical literature on opinion dynamics and social influence. Moreover, we investigate the effect of argumentation on group structure by simulation...

In this paper, we investigate how dynamic properties of reputation can influence the quality of users ranking. Reputation systems should be based on rules that can guarantee a high level of trust and help identifying unreliable units. To understand the effectiveness of dynamic properties in the evaluation of reputation, we propose our own model (DIB-RM) that is based on three factors: forgettin...

Merchant reputation is a collective measure of trustworthiness derived from a combination of received referrals and consumer past purchase experience. The positive influence of merchant reputation on consumers’ responses and attitudes has received much attention, particularly in terms of the connection between trust and merchant reputation. This paper focuses on how merchant reputation shapes c...