CoWSAMI: Interface-aware context gathering in ambient intelligence environments
Pervasive and Mobile Computing
A flexible QoS-aware routing protocol for infrastructure-less B3G networks
Proceedings of the 2009 ACM symposium on Applied Computing
A Coalitional Game Model for Heat Diffusion Based Incentive Routing and Forwarding Scheme
NETWORKING '09 Proceedings of the 8th International IFIP-TC 6 Networking Conference
Factors influencing corporate online identity: a new paradigm
Journal of Theoretical and Applied Electronic Commerce Research
Hybrid trust and reputation management for sensor networks
Wireless Networks
A self-organising directory and matching service for opportunistic social networking
Proceedings of the 3rd Workshop on Social Network Systems
Reputation in multi agent systems and the incentives to provide feedback
MATES'10 Proceedings of the 8th German conference on Multiagent system technologies
An architectural approach to composing reputation-based distributed services
ECSA'10 Proceedings of the 4th European conference on Software architecture
Exploring Multi-Path Communication in Hybrid Mobile Ad Hoc Networks
International Journal of Ambient Computing and Intelligence
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The vision of ubiquitous computing is becoming a reality thanks to the advent of portable devices and the advances in wireless networking technologies. It aims to facilitate user tasks through seamless utilization of services available in the surrounding environments. In such distributed environments featuring openness, interactions such as service provision and consumption between entities that are unknown or barely known to each other, are commonplace. Trust management through reputation mechanism for facilitating such interactions is recognized as an important element of ubiquitous computing. It is, however, faced by the problems of how to stimulate reputation information sharing and enforce honest recommendation elicitation. We present in this paper an incentive compatible reputation mechanism to facilitate the trustworthiness evaluation of entities in ubiquitous computing environments. It is based on probability theory and supports reputation evolution and propagation. Our reputation mechanism not only shows robustness against lies, but also stimulates honest and active recommendations. The latter is realized by ensuring that active and honest recommenders, compared to inactive or dishonest ones, can obtain the most number of honest (helpful) recommendations and thus suffer the least number of wrong trust decisions, as validated by simulation based evaluation. The proposed reputation mechanism is also implemented as part of a QoS-aware Web service discovery middleware and evaluated regarding its overhead on service discovery latency.