Workflow View Based E-Contracts in a Cross-Organizational E-Services Environment
Distributed and Parallel Databases
Facilitating cross-organisational workflows with a workflow view approach
Data & Knowledge Engineering - Special issue: Contract-driven coordination and collaboration in the internet context
Business-to-business workflow interoperation based on process-views
Decision Support Systems
The view-based approach to dynamic inter-organizational workflow cooperation
Data & Knowledge Engineering
Aggregation of Service Level Agreements in the Context of Business Processes
EDOC '08 Proceedings of the 2008 12th International IEEE Enterprise Distributed Object Computing Conference
Using clouds to provide grids with higher levels of abstraction and explicit support for usage modes
Concurrency and Computation: Practice & Experience - A Special Issue from the Open Grid Forum
Service level agreements: web services and security
ICWE'07 Proceedings of the 7th international conference on Web engineering
What’s in an agreement?an analysis and an extension of WS-Agreement
ICSOC'05 Proceedings of the Third international conference on Service-Oriented Computing
Contract-based cloud architecture
CloudDB '10 Proceedings of the second international workshop on Cloud data management
SLA validation in layered cloud infrastructures
GECON'10 Proceedings of the 7th international conference on Economics of grids, clouds, systems, and services
Aggregation patterns of service level agreements
Proceedings of the 8th International Conference on Frontiers of Information Technology
An architecture and methodology for a four-phased approach to green business process reengineering
ICT-GLOW'11 Proceedings of the First international conference on Information and communication on technology for the fight against global warming
Establishing composite SLAs through concurrent QoS negotiation with surplus redistribution
Concurrency and Computation: Practice & Experience
Agent-based organisational governance of services
Multiagent and Grid Systems - Development of service-based and agent-based computing systems
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Business scenarios such as Business Value Networks and Extended Enterprises pose new challenges for service choreographies across heterogeneous Virtual Organizations. In such scenarios, services compose together hierarchically in a producer-consumer manner to form service supply-chains of added value. Service Level Agreements (SLAs) are defined at various levels in this hierarchy to ensure the expected quality of service for different stakeholders. Automation of service composition directly implies the aggregation of their corresponding SLAs. But so far, the aggregation of SLAs has been treated only as a single layer process which is insufficient to complement the hierarchical aggregation of services. In this paper we elaborate on the requirement of a hierarchical aggregation of SLAs corresponding to service choreographies in Business Value Networks. During the hierarchical aggregation of SLAs, certain SLA information pertaining to different stakeholders is meant to be restricted and can be only partially revealed to a subset of their business partners. We introduce the concept of SLA-Views to protect such privacy concerns. We, then formalize the notion of SLA Choreography and define an aggregation model based on SLA-Views to enable the automation of hierarchical aggregation of Service Level Agreements. The aggregation model has been designed to comply with the WS-Agreement standard.