We all highly depend and rely on the trustworthiness of information and services provided by various parties and institutions. Reputation systems are one possibility to support individuals in distinguishing trustworthy partners from malicious and unreliable parties. In this paper, we discuss possibilities and limitations of different types of reputation systems and their underlying trust models...

We show that reputation is a basic ingredient in the Virtual Organisation (VO) formation process. Agents can use their experiences gained in direct past interactions to model other’s reputation and deciding on either join a VO or determining who is the most suitable set of partners. Reputation values are computed using a reinforcement learning algorithm, so agents can learn and adapt their repu...

In this paper we propose a new and efficient reputation management scheme for partially decentralized peer-to-peer systems. The reputation scheme helps to build trust between peers based on their past experiences and the feedback from other peers. We also propose two selection advisor algorithms for helping peers select the right peer to download from. The simulation results show that the propo...

Web-mediated consumer-to-consumer auctions are often regarded as risky due to the opportunistic behaviors in transaction. Online virtual community using feedback-based reputation service is an emerging trust building technology to reduce risk in online auction market. The purpose of this paper is to study the effect of feedback profiles on buyer’s purchase behavior. Based on previous researches...

Online reputation systems have evolved to increase our knowledge of sellers, products, services, and other individuals in the electronic setting of the Internet. Evidence from prior studies suggests that the feedback individuals provide through reputation systems in the form of numerical ratings, a given number of stars, and text commentary should alleviate an element of uncertainty when intera...

Robust Trust Reputation Systems (TRS) provide a most trustful reputation score for a specific product or service so as to support relying parties taking the right decision while interacting with an e-commerce application. Thus, TRS must rely on an appropriate architecture and suitable algorithms that are able to improve the selection, storage, generation and classification of textual feedbacks....

This paper examines approaches to representing uncertainty in reputation systems for electronic markets with the aim of constructing a decision theoretic framework for collecting information about selling agents and making purchase decisions in the context of a social reputation system. A selection of approaches to representing reputation using Dempster-Shafter Theory and Bayesian probability a...

The absence of a router or a base station urges the need for better access control mechanism in the ad-hoc networks. This paper presents a localized approach for access control which implements ticket certification services through reputation mechanism. Reputation refers to, the opinion of one node as seen by other nodes. Ticket certification ensures that, only well behaving nodes (which forwar...

Because of wireless sensor networks are usually deployed in hostile environment without continuous supervision, node compromise is the most critical threats of security issues of wireless sensor networks. In this paper, we proposed a method to identify malicious nodes in wireless sensor networks which have deployed with a reputation system through using time series analysis on node reputation. ...

Online communities are the new-age platform for sharing information and experiences with groups of people. Members of a community are dealing with the daily conflict of having to decide what information they are willing to disclose in order to increase their reputation. Fear of possible privacy loss may lead a member to avoid sharing information with others, even when acting anonymously. Privac...