Exploring the impact of inaccuracy and imprecision of QoS assumptions on proactive constraint-based QoS prediction for service orchestrations

Ivanovic,; Carro,; Hermenegildo, Manuel V.

doi:10.1109/pesos.2012.6225936

Cited by 2 publications

(2 citation statements)

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“…For other input data sizes (in ranges 1..8, 11..16, and 21..40), the predictor is able to predict SLA conformance at the very start. In both cases, the percentage of correctly predicted cases is typically very high, between 94% and 99% [5].…”

Section: Supporting Sla Negotiation For Classes Of Input Datamentioning

confidence: 97%

A Constraint-Based Approach to Quality Assurance in Service Choreographies

Ivanović

Carro

Hermenegildo

2012

Service-Oriented Computing

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Abstract. Knowledge about the quality characteristics (QoS) of service compositions is crucial for determining their usability and economic value. Service quality is usually regulated using Service Level Agreements (SLA). While end-to-end SLAs are well suited for request-reply interactions, more complex, decentralized, multi-participant compositions (service choreographies) typically involve multiple message exchanges between stateful parties and the corresponding SLAs thus encompass several cooperating parties with interdependent QoS. The usual approaches to determining QoS ranges structurally (which are by construction easily composable) are not applicable in this scenario. Additionally, the intervening SLAs may depend on the exchanged data. We present an approach to data-aware QoS assurance in choreographies through the automatic derivation of composable QoS models from participant descriptions. Such models are based on a message typing system with size constraints and are derived using abstract interpretation. The models obtained have multiple uses including run-time prediction, adaptive participant selection, or design-time compliance checking. We also present an experimental evaluation and discuss the benefits of the proposed approach.

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Section: Supporting Sla Negotiation For Classes Of Input Datamentioning

confidence: 97%

A Constraint-Based Approach to Quality Assurance in Service Choreographies

Ivanović

Carro

Hermenegildo

2012

Service-Oriented Computing

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Section: Predicting Sla Violations At Run Timementioning

confidence: 97%

Analysis of service-oriented computing systems

Ivanović¹

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Work on this thesis was made possible by many people to whom I am deeply grateful. I cannot possibly thank enough my wife Jasmina and my daughter Vedrana whose love and support never faltered during almost three years of our geographic separation. And without the selfless support to our family from my dear parents and my brother Žarko during that time, I wouldn't have come to the stage of writing these lines. My special thanks go to my thesis advisor, Manuel Carro who has taken me on board in the first place, and then given me help, guidance and support in every imaginable way -scientifically, professionally, and personally -for the whole duration of the exciting journey through the doctoral studies. I couldn't have possibly hoped for more. I am glad of having had the opportunity to work on most of my publications together with Manuel Hermenegildo, the director of the CLIP laboratory as well as of the IMDEA Software institute, a person of truly dazzling intelligence and seemingly inexhaustible energy. During the greatest part of my PhD studies I worked within and was funded by S-Cube, a EU Network of Excellence project on software and services. It was indeed an excellent and inspiring environment for doing and aligning service-related research. For very fruitful discussions, hospitality during my study stays, and joint research work I am especially thankful to Martin Treiber, Schahram Dustdar and Philipp Leitner of the

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Exploring the impact of inaccuracy and imprecision of QoS assumptions on proactive constraint-based QoS prediction for service orchestrations

Cited by 2 publications

References 4 publications

A Constraint-Based Approach to Quality Assurance in Service Choreographies

A Constraint-Based Approach to Quality Assurance in Service Choreographies

Analysis of service-oriented computing systems

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