On Expressing and Monitoring Behaviour in Contracts
EDOC '02 Proceedings of the 6th International Enterprise Distributed Object Computing Conference
Trusted Mediation for E-service Provision in Electronic Marketplaces
WELCOM '01 Proceedings of the Second International Workshop on Electronic Commerce
Trusted Agent-Mediated E-Commerce Transaction Services via Digital Certificate Management
Electronic Commerce Research
A model for web services discovery with QoS
ACM SIGecom Exchanges
QoS computation and policing in dynamic web service selection
Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters
Web services on demand: WSLA-driven automated management
IBM Systems Journal
A framework for requirents monitoring of service based systems
Proceedings of the 2nd international conference on Service oriented computing
Toward autonomic web services trust and selection
Proceedings of the 2nd international conference on Service oriented computing
A logical model of directed obligations and permissions to support electronic contracting
International Journal of Electronic Commerce - Special issue: Formal aspects of digital commerce
Eliciting Informative Feedback: The Peer-Prediction Method
Management Science
Pro-active monitoring of electronic contracts
CAiSE'03 Proceedings of the 15th international conference on Advanced information systems engineering
Verity: a QoS metric for selecting Web services and providers
WISEW'03 Proceedings of the Fourth international conference on Web information systems engineering workshops
Minimum payments that reward honest reputation feedback
EC '06 Proceedings of the 7th ACM conference on Electronic commerce
Using CHI-scores to reward honest feedback from repeated interactions
AAMAS '06 Proceedings of the fifth international joint conference on Autonomous agents and multiagent systems
Reliable QoS monitoring based on client feedback
Proceedings of the 16th international conference on World Wide Web
On the reputation of communities of web services
NOTERE '08 Proceedings of the 8th international conference on New technologies in distributed systems
GMAC '09 Proceedings of the 6th international conference industry session on Grids meets autonomic computing
A Truthful Two-Stage Mechanism for Eliciting Probabilistic Estimates with Unknown Costs
Proceedings of the 2008 conference on ECAI 2008: 18th European Conference on Artificial Intelligence
Joint admission control and resource allocation in virtualized servers
Journal of Parallel and Distributed Computing
On a linear framework for belief dynamics in multi-agent environments
CLIMA VII'06 Proceedings of the 7th international conference on Computational logic in multi-agent systems
AMPol-Q: adaptive middleware policy to support qos
ICSOC'06 Proceedings of the 4th international conference on Service-Oriented Computing
On the analysis of reputation for agent-based web services
Expert Systems with Applications: An International Journal
Future Generation Computer Systems
Analyzing coopetition strategies of services within communities
ICSOC'12 Proceedings of the 10th international conference on Service-Oriented Computing
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Most web services need to be contracted through service level agreements that typically specify a certain quality of service (QoS) in return for a certain price. We propose a new form of service level agreement where the price is determined by the QoS actually delivered. We show that such agreements make it optimal for the service provider to deliver the service at the promised quality. To allow efficient monitoring of the actual QoS, we introduce a reputation mechanism. A scoring rule makes it optimal for the users of a service to correctly report the QoS they observed. Thus, we obtain a practical scheme for service-level agreements that makes it uninteresting for providers to deviate from their best effort.