Oliver Moser

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Web service processes currently lack monitoring and dynamic (runtime) adaptation mechanisms. In highly dynamic processes, services frequently need to be exchanged due to a variety of reasons. In this paper we present VieDAME, a system which allows monitoring of BPEL processes according to Quality of Service (QoS) attributes and replacement of existing(More)
VieDAME is a tool for monitoring and dynamic service adaptation of BPEL processes. The tool monitors partner service interaction to compute Quality of Service (QoS) data and performs dynamic service adaptation based on various available service selection strategies, such as availability or response time. The service adaptation happens transparently at(More)
We present an event-based monitoring approach for service composition infrastructures. While existing approaches mostly monitor these infrastructures in isolation, we provide a holistic monitoring approach by leveraging Complex Event Processing (CEP) techniques. The goal is to avoid fragmentation of monitoring data across different subsystems in large(More)
—We propose a domain-specific service selection mechanism and system implementation to address the issue of runtime adaptation of composite services that implement mission-critical business processes. To this end, we leverage quality of service (QoS) as a means to specify rigid dependability requirements. QoS does not include only common attributes such as(More)
Service orientation emerged as an ubiquitous paradigm to tackle large scale software systems. In this regard, service oriented systems represent application functionalities and responsibilities by the means of loosely coupled, computational elements, called services. Services can be combined in a structured fashion, resulting in composite services that are(More)
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