..............................................................................................................................I Dedication ......................................................................................................................... II Acknowledgement ...........................................................................................................III Table ...

Reputation mechanisms have been proved to be valid methods to select partners in organisational environments. In order to tackle some well-known problems inherent to both centralised and distributed reputation mechanisms, a hybrid mechanism combining both techniques seems to be a promising approach. In this work firstly we summarise our previous work, a hybrid reputation mechanism, focusing on ...

Tourism destinations are complex organizations which need to manage their organizational reputation. Moreover, being the web a very relevant communication, marketing and sales channel, tourism managers should be aware that also online discourse can influence the overall reputation of the destination. Actually the ever increasing complexity and evolution of the web and the advent of web2.0 made ...

This paper is concerned with the issue of reputation and the computation of group opinion. We argue that entities may receive both objective and subjective opinions, and distinguishing between the two is crucial for achieving more precise measures. Additionally, we argue that the group opinion about an entity α is not only influenced by the opinions that α receives (whether objective or subject...

To build an efficient reputation system for peer-to-peer (P2P) networks, we need fast mechanisms to aggregate peer evaluations and to disseminate updated scores to a large number of peer nodes. Unfortunately, unstructured P2P networks are short of secure hashing and fast lookup mechanisms as in structured P2P systems like the DHT-based Chord. In light of this shortcoming, we propose a gossiping...

Unsolicited bulk e-mail (UBE) or spam constitutes a significant fraction of all e-mail connection attempts and routinely frustrates users, consumes resources, and serves as an infection vector for malicious software. In an effort to scalably and effectively reduce the impact of these e-mails, e-mail system designers have increasingly turned to blacklisting. Blacklisting (blackholing, block list...

In the Peer-to-Peer networks Web caching plays an important role in reducing the network delays, latency of the user response and the server load. Still web caching is of great challenge as the maintenance of object copies at multiple nodes is the issue of trustworthiness, consistency and optimal resource placement. The en-route web caching strategy along with the reputation aggregation method ...

Reputations of electronic parties are important for their economic viability in business settings. Potential clients of e-services cannot rely solely on their own experiences to gain knowledge about e-services’ reputations. Plainly aggregating rating comments from other clients can often be misleading. Therefore, we are presenting a reputation aggregation model which seeks for the subgroup of r...