Trust and reputation comprise a wide research area in social sciences, but are also pillars of many social phenomena that shape the Internet socio-economic scene. The blossoming of virtual communities largely changed the way trust is formed and propagated. The few existing taxonomies provide only initial insights into the ways trust-benefits can be felt; they are neither complete nor elaborated in a systemic manner to provide a proper framework guided by real system-principles. In this paper, we propose a multidimensional framework for guiding the design-process, and assessing the completeness and consistency of reputation systems. Our framework is based on System theory principles; it identifies reputation system components, and more importantly, defines their interrelations. It considers the interaction-centric, dynamic and environment-dependent trust-establishment and detects five major factors that guide reputation mechanisms design. The presented framework is applied to BarterCast reputation mechanism deployed in the BitTorrent-client Tribler.
COBISS.SI-ID: 25130535
The future content delivery platforms are predicted to be efficient, user-centric, low-cost and participatory systems, with social and collaborative connotation. The peer-to-peer (P2P) architectures, especially ones based on BitTorrent protocol, give a solid basis for provision of such future systems. However, current BitTorrent P2P networks lack flexible access control mechanisms. In this paper enhancements to existing access control mechanism for BitTorrent systems – the Closed Swarms protocol are presented, providing additional flexibility in access control mechanism, enabling fine grained security policies specification and enforcement. The enhancements fulfill a number of content providers’ requirements and promise efficient, flexible and secure content delivery in future content delivery scenarios.
COBISS.SI-ID: 24977959