COSMA – An Approach for Managing SLAs in Composite Services

Ludwig, André; Franczyk, Bogdan

doi:10.1007/978-3-540-89652-4_56

Cited by 21 publications

(17 citation statements)

References 6 publications

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“…QoS) service characteristics across the entire lifecycle based on a model of atomic and composite services [16,17]. Although outlined approaches also focus on automation and on-line computation of QoS aggregation, complexity aspects and efficient algorithm design is not in the focus.…”

Section: Related Workmentioning

confidence: 99%

Efficient QoS Aggregation in Service Value Networks

Haak

2012

2012 45th Hawaii International Conference on System Sciences

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In recent years, the trend towards standardization, simplification and modularization in the service sector has fostered the raise of Service Value Networks where providers and consumers jointly co-create value. With many different competing services available, the user experience, which is captured by the non-functional Quality-of-Service (QoS) attributes, is an important competitive factor. QoS computation for complex Web services, i.e. the aggregation of QoS factors from atomic services, is essential for an automated an optimized Web service selection process. However, the computational complexity of QoS aggregation has often been disregarded in the respective field of research, whereas computational efficiency is inevitable for the application of optimization approaches in on-line scenarios. The threefold contribution of this paper consists of an elaboration on the computational complexity of aggregating QoS, an approximation scheme that allows for a computational efficient optimization and a broad analytical and simulation-based evaluation of this approach.

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Section: Related Workmentioning

confidence: 99%

Efficient QoS Aggregation in Service Value Networks

Haak

2012

2012 45th Hawaii International Conference on System Sciences

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“…1 Basic interaction between the service requester and the service provider respective services. A service-oriented application can consist of composite SLAs [2,29] that represent more than one SLA for provision of service composition. The agreements might be established through negotiation during build time of the application lifecycle.…”

Section: Sla Negotiation Overviewmentioning

confidence: 99%

An offer generation approach to SLA negotiation support in service oriented computing

Ismail

Yan

Shen

2010

SOCA

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Service level agreement (SLA) plays an important role in realizing service-oriented application. With SLA negotiation mechanism, both parties namely the requester and the provider can exchange information of SLA parameters towards establishing an agreement. In this paper, we study the roles of both parties and focus on how service providers generate offers upon receiving the requests from service requesters. From the provider's perspective, the provider has to decide the right values to offer based on its current resource availability while aiming to satisfy the requester requirements (if possible). Therefore, in this paper, we propose an approach to addressing offer generation, including the architecture, the information modeling and the generation algorithm. We then provide a case study to illustrate the usefulness of the approach, followed by an analysis to justify the effectiveness of the approach.

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“…Most of the discussed approaches are evaluated by providing a proof-of-concept implementation (e.g., [19,20]). In addition, some approaches are validated by a performance study (e.g., [18,21]).…”

Section: Related Workmentioning

confidence: 99%

Empirical Validation of MoDe4SLA; Approach for Managing Service Compositions

Bodenstaff

Wombacher

Reichert

2011

Business Information Systems

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Abstract. For companies managing complex Web service compositions, challenges arise which go far beyond simple bilateral contract monitoring. For example, it is not only important to determine whether or not a component (i.e., Web service) in a composition is performing properly, but also to understand what the impact of its performance is on the overall service composition. To tackle this challenge, in previous work we developed MoDe4SLA which allows managing and monitoring dependencies between services in a composition. This paper empirically validates MoDe4SLA through an extensive and interactive experiment among 34 participants.

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COSMA – An Approach for Managing SLAs in Composite Services

Cited by 21 publications

References 6 publications

Efficient QoS Aggregation in Service Value Networks

Efficient QoS Aggregation in Service Value Networks

An offer generation approach to SLA negotiation support in service oriented computing

Empirical Validation of MoDe4SLA; Approach for Managing Service Compositions

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