Nowadays more and more Internet applications install reputation systems to collect opinions users have about some reputation objects. The opinions are usually formalized in the form of ratings the reputation system can use to build overall reputation profiles of the reputation objects. Reputation objects might be other users, products, web content and anything else that can be rated. Users may ...

Topic priority assignment is defined in RepLab-2013 as labelling a topic according to its level of priority (alert, mildly important or unimportant) in order to highlight topics requiring immediate attention for online reputation monitoring. Although they are strongly linked, topic detection and priority assignment have been previously treated as separate tasks. We study the impact of integrati...

Assuring Quality of Service (QoS) over multiple Network Service Providers (NSPs) requires to negotiate QoS contracts as Service Level Agreements (SLAs) between NSPs. The goal of an NSP is to maximize its revenues by selling as much as possible SLAs. However, provisioning too much SLAs might increase the risk of violations of the committed QoS thus impacting the NSP’s reputation. In order to det...

We summarize the goals, organization, and results of the second RepLab competitive evaluation campaign for Online Reputation Management systems (RepLab 2013). RepLab 2013 focuses on the process of monitoring the reputation of companies and individuals, and asks participating systems to annotate different types of information on tweets containing the names of several companies. First, tweets hav...

Trust decisions on inter-enterprise collaborations involve a trustor’s subjective evaluation of its willingness to participate in the specific collaboration, given the risks and incentives involved. In earlier work, we have built support on automating routine trust decisions based on a combination of risk, reputation and incentive information. Non-routine cases must be dealt with by human users...

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...

This paper devises a classification system for reputation systems based on two axes, namely: who performs the evaluation of a subject’s reputation, and how the information is collected by the reputation system. This leads to 4 possible operational models for reputation systems, termed the Voting Model, the Opinion Poll Model, the MP Model and the Research Model, each of which is then analyzed. ...