AMPol-Q: Adaptive Middleware Policy to Support QoS

Afandi, Raja; Gunter, Carl A.

doi:10.1007/11948148_14

Cited by 10 publications

(6 citation statements)

References 18 publications

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“…If so, it may be declared as fixable, otherwise it must be declared as non-fixable. In turn, the controllability is related to the ability of the service to adapt itself in order to maintain the objectives which are being guaranteed, adjusting dynamically the use of common resources which are shared with other services [1,11,18].…”

Section: Fixability and Dependencymentioning

confidence: 99%

Dealing with Fixable and Non-fixable Properties in Service Matchmaking

Martín–Díaz

Ruiz–Cortés

García

et al. 2010

Service-Oriented Computing – ICSOC 2007

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Abstract. In the context of service discovery, matchmakers check the compliance of service-level objectives from providers and consumers. The problem of bounded uncertainty arises if some property is non-fixable. In this case, the provider is not able to control the value it takes at runtime, so the eventual consumer must not have the choice to select a value and fix it, but only knowing the guaranteed range of values it may take. To the best of our knowledge, there does not exist any approach which deals with this scenario. Most matchmakers work as if all properties were fixable, and a few have assumed the contrary. In either case, the accuracy of their results is likely to be in question since there may be involved both fixable and non-fixable properties at the same time, and there may also exist dependencies between them. In order to improve the accuracy, we present a holistic approach to matchmaking under bounded uncertainty and propose constraint programming as our choice to deal with it, so that matchmaking is transformed into a quantified constraint satisfaction problem.

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Section: Fixability and Dependencymentioning

confidence: 99%

Dealing with Fixable and Non-fixable Properties in Service Matchmaking

Martín–Díaz

Ruiz–Cortés

García

et al. 2010

Service-Oriented Computing – ICSOC 2007

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“…Concerning the analysis and description, one of the most important results was presented by O'Sullivan et al [8] who state the importance of NFPs and define a model to describe the domain independent NFPs of services. In [1], an ontology of QoS is proposed for supporting discovery, selection, composition and monitoring of SWSs. In [7], a three-level ontology is proposed for expressing QoS-based policies and preferences.…”

Section: Related Workmentioning

confidence: 99%

NFP-aware Semantic Web Services Selection

Comerio

Paoli

Maurino

et al. 2007

11th IEEE International Enterprise Distributed Object Computing Conference (EDOC 2007)

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The discovery of a Semantic Web Service (SWS) is the act of locating a machine-processable description of a SWSrelated resource that may have been previously unknown and that meets certain functional criteria. The increasing availability of services that offer similar functionalities requires the discovery process to be enhanced with a selection phase that considers non-functional properties (NFPs) of services. This paper proposes a model to describe these properties and a novel approach to service selection. Our approach is based on the design of matching rules by means of mediators defined by sets of rules stating the condition for successful matches. These rules are based on the ontological description of objects representing NFPs that are required and offered. In particular, we define a set of rule schemas to support mediation and matching for a class of user-defined NFP-constraints clustered according to specified constraint operators. Rules support matching for both qualitative and quantitative non-functional properties.

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“…The Adaptive Messaging Policy (AMPol) project, of which this paper is a part, has considered some technologies related to ABM [15,2,1]. WSEmail is the idea of building messaging systems over a web services foundation.…”

Section: Related Workmentioning

confidence: 99%