Flexible Probabilistic QoS Management of Transaction Based Web Services Orchestrations

Rosario, Sidney; Benveniste, Albert; Jard, Claude

doi:10.1109/icws.2009.38

Cited by 17 publications

(18 citation statements)

References 16 publications

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“…Maintaining efficient QoS levels of invoked services is a major prerogative of composite web service orchestrations, with service level agreements (SLAs) [3] being employed to ensure this. QoS metrics being multi-dimensional random variables, the treatment of QoS composition and SLAs tends toward probabilistic criterion [4].…”

Section: Introductionmentioning

confidence: 99%

QoS Composition and Analysis in Reconfigurable Web Services Choreographies

Kattepur

Georgantas

Issarny

2013

2013 IEEE 20th International Conference on Web Services

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Abstract-Quality of Service (QoS) in orchestrated web services compositions have been well studied with probabilistic and multi-dimensional models. Choreographies that involve message passing among services, on the other hand, require further analysis. In this paper, we begin with the set of QoS domains that may be studied in case of choreographies and the algebraic rules for their composition. As choreographies manage QoS composition in a distributed fashion, techniques to enrich functional specifications with QoS are examined using the model proposed in the CHOReOS project. These are further analyzed with choreographies that may reconfigure due to functional or QoS requirements. Studies on the effects of such reconfiguration on multiple QoS domains can lead to better understanding of optimal runtime configurations along with associated tradeoffs. A goal programming approach is also proposed to choose Pareto optimal solutions with respect to diverse QoS domains.

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Section: Introductionmentioning

confidence: 99%

QoS Composition and Analysis in Reconfigurable Web Services Choreographies

Kattepur

Georgantas

Issarny

2013

2013 IEEE 20th International Conference on Web Services

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“…Instead of enforcing a hard constraint on QoS values in a contract, this work acknowledged the uncertain nature of QoS values and provided flexibility for reaching agreement between users and services. The work in [31] and [32] both focused on manage QoS values of web services and their conformance to service level agreement, which is different from our focus.…”

Section: A Qos Managementmentioning

confidence: 99%

“…It integrates dependency matrix based and Bayesian network based diagnosis to reduce diagnose cost and improve the accuracy. In [32], an approach was proposed to realize a soft probabilistic contract for QoS management in a composite web service. Instead of enforcing a hard constraint on QoS values in a contract, this work acknowledged the uncertain nature of QoS values and provided flexibility for reaching agreement between users and services.…”

Section: A Qos Managementmentioning

confidence: 99%

A Survey Paper on Extraction of Web Services for Effective User Review Sentiment Analysis

2016

IJSR

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This paper presents a survey on features Extraction of Web Services for effective User Review Sentiment Analysis.Recognition of opinion features from online user reviews is a task to find on which feature user is going to put his opinion. For opinion feature identification there are number of existing techniques but, features are extracted from single corpus. Quality of Service has become a standard way of evaluating web services and selecting the one that suites user interests the best. Traditional methods adopt a fixed set of QoS parameters and typical ones include response time, fee, and availability. There currently lacks an effective way of identifying quality features that users are actually interested in when choosing a service. Meanwhile, the traditional way of collecting QoS values relies on either public information released by service providers or test results from repeatedly invoking a service. The last section of paper will discuss the disadvantages of current systems and will state the future scope.

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“…Relevant QoS analysis techniques are used by Zeng et al [23] for optimal decomposition of global QoS constraints into local constraints for composition in the case of service orchestrations. An algebraic formulation based on multi-dimensional probabilistic models is proposed in [21] to compose QoS metrics in the case of web services orchestrations. This has been used to support optimization problems for decision making in orchestrations [14].…”

Section: Related Workmentioning

confidence: 99%

“…In order to aggregate metrics available from heterogeneous interactions, we make use of an algebraic framework as introduced in [21]. This can handle random variables drawn from a distribution associated with a lattice domain.…”

Section: Qos Algebramentioning

confidence: 99%

QoS Analysis in Heterogeneous Choreography Interactions

Kattepur

Georgantas

Issarny

2013

Service-Oriented Computing

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Abstract. With an increasing number of services and devices interacting in a decentralized manner, choreographies are an active area of investigation. The heterogeneous nature of interacting systems leads to choreographies that may not only include conventional services, but also sensor-actuator networks, databases and service feeds. Their middleware behavior within choreographies is captured through abstract interaction paradigms such as client-service, publish-subscribe and tuple space. In this paper, we study these heterogeneous interaction paradigms, connected through an eXtensible Service Bus proposed in the CHOReOS project. As the functioning of such choreographies is dependent on the Quality of Service (QoS) performance of participating entities, an intricate analysis of interaction paradigms and their effect on QoS metrics is needed. We study the composition of QoS metrics in heterogeneous choreographies, and the subsequent tradeoffs. This produces interesting insights such as selection of a particular system and its middleware during design time or end-to-end QoS expectation/guarantees during runtime. Non-parametric hypothesis tests are applied to systems, where QoS dependent services may be replaced at runtime to prevent deterioration in performance.

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Flexible Probabilistic QoS Management of Transaction Based Web Services Orchestrations

Cited by 17 publications

References 16 publications

QoS Composition and Analysis in Reconfigurable Web Services Choreographies

QoS Composition and Analysis in Reconfigurable Web Services Choreographies

A Survey Paper on Extraction of Web Services for Effective User Review Sentiment Analysis

QoS Analysis in Heterogeneous Choreography Interactions

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