During the last twenty years, a huge amount of trust and reputation models have been proposed, each of them with their own particularities and targeting different domains. While much effort has been made in defining ever-increasing complex models, little attention has been paid to abstract away the particularities of these models into a common set of easily understandable concepts. We propose a...

In this paper we describe a generic approach to modeling user reputation in online social platforms based on an underlying model of collaboration. This distinguishes our approach from more conventional reputation models which are often based around ad-hoc activity metrics. We evaluate our model with respect to a conventional reputation model used by 3 social Q&A websites, each based on a differ...

Rating systems are used by many websites, which allow customers to rate available items according to their own experience. Subsequently, reputation models are used to aggregate available ratings in order to generate reputation scores for items. A problem with current reputation models is that they provide solutions to enhance accuracy of sparse datasets not thinking of their models performance ...

Online brand reputation is of increasing significance to many organisations and institutes around the globe. As the usage of the www continues to increase it has become the most commonly used platform for users and customers of services and products to discuss their views and experiences. The nature of this www discussion can significantly influence the perception and hence the success of a bra...

Trust between communicating peers is increasingly catching the attention of the research community. Several methods have been proposed to assist the task of establishing trust between communicating peers; all of which make use of reputation mechanisms. We find that in present literature, reputation is incorrectly defined, as some chief aspects of reputation are not considered while defining it....

It is proposed that through the formalization of concepts related to trust, a more accurate model of trust can be implemented. This paper presents a new model of trust that is based on the formalization of reputation. A multidisciplinary approach is taken to understanding the nature of trust and its relation to reputation. Through this approach, a practical definition of reputation is adopted f...

Reputation Speculation behavior means that the buyers and sellers collaborate with each other to make fake transaction and give positive feedbacks in order to raise reputation level of online shops. This paper finds that reputation speculation is widely adopted and becomes an industry in China, making the consumers distrust the reputation of online stores, which is not conducive for the long-te...

This study examines how sellers respond to changes in the design of reputation systems on eBay. Specifically, we focus on one particular strategic behavior on eBay’s reputation system, the sellers’ explicit retaliation against negative feedback provided by buyers to coerce buyers into revoking their negative feedback. We examine how these strategic sellers respond to the removal of their abilit...

With the rapid growth of cloud computing, the importance of a reputation system for cloud computing services has attracted a lot of attention. Building an objective and reliable reputation scheme has been crucial to promote the development of cloud computing. To address the challenges of reputation evaluation in cloud computing, including the diverse nature of cloud services and intricacy of ma...

Building trust is very important because fraud has been on rise in online electronic markets. Trust allows participant in online electronic markets to overcome perceptions of risk and uncertainty and make a deal. This paper proposes a design of a mechanism of building trust in online electronic markets. The interesting aspects of this mechanism is that it not only improves reputation rating mea...