Simulation, verification and automated composition of web services
Proceedings of the 11th international conference on World Wide Web
DAML-S: Web Service Description for the Semantic Web
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
A Petri net-based model for web service composition
ADC '03 Proceedings of the 14th Australasian database conference - Volume 17
Passive testing and applications to network management
ICNP '97 Proceedings of the 1997 International Conference on Network Protocols (ICNP '97)
Declarative Composition and Peer-to-Peer Provisioning of Dynamic Web Services
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
Cooperative and Group Testing in Verification of Dynamic Composite Web Services
COMPSAC '04 Proceedings of the 28th Annual International Computer Software and Applications Conference - Workshops and Fast Abstracts - Volume 02
A QoS Broker Based Architecture for Efficient Web Services Selection
ICWS '05 Proceedings of the IEEE International Conference on Web Services
Mobile agents for testing web services in next generation networks
MATA'05 Proceedings of the Second international conference on Mobility Aware Technologies and Applications
Efficient traces' collection mechanisms for passive testing of Web Services
Information and Software Technology
Towards dynamic non-obtrusive health monitoring based on SOA and cloud
HIS'13 Proceedings of the second international conference on Health Information Science
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With the proliferation of web services in business and as the number of web services is increasing, it is anticipated that a single web service will become insufficient to handle multitude, heterogeneous, and complex functions. Hence, web service composition will be used to create new value added services with a wide range of functionalities. Management of a composed web service is a complex issue compared to the management of a non-composed (basic) web service. In this paper, we propose a multi-observer architecture for detecting and locating faults in composed web services. It makes use of a network of observers that cooperate together to observe a composed web service. An observation strategy based on a set of heuristics is presented to reduce the number of web services to be observed. Observers are developed as mobile agent observers to help reducing the load introduced by the observation. Algorithms for fault detection, notification, and collaboration between observers are described. Finally, the architecture is illustrated through a case study for observing a composed teleconferencing web services in a 3G network. Different components of the architecture are developed. The network load introduced by the observation is measured and the fault detection capabilities of the architecture are discussed.