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Performance Functions for QoS Prediction in Web Service Composites

Volk, Florian and Sokoli, Johanna and Mühlhäuser, Max (2014):
Performance Functions for QoS Prediction in Web Service Composites.
In: 21th IEEE International Conference on Web Services, pp. 574-581, [Article]

Abstract

We contribute performance functions to model the quality of service (QoS) of web services in horizontal composites. Performance function are thereby used to formalize service level agreements (SLAs) to enable automated verification. Inter-Component rating is a model for gathering additional QoS information from web services that rate the output of their predecessor web services in composites. Furthermore, we contribute two tools to verify if a web service adheres to its claimed QoS described with a performance function. For this verification, claimed performance is compared with reading points gathered from spot-testing the quality of the web service. The first tool we discuss is function interpolation, the second one applies methods from computational trust. The paper also discusses the advantages and drawbacks of both tools as well as the influence of measuring errors.

Item Type: Article
Erschienen: 2014
Creators: Volk, Florian and Sokoli, Johanna and Mühlhäuser, Max
Title: Performance Functions for QoS Prediction in Web Service Composites
Language: English
Abstract:

We contribute performance functions to model the quality of service (QoS) of web services in horizontal composites. Performance function are thereby used to formalize service level agreements (SLAs) to enable automated verification. Inter-Component rating is a model for gathering additional QoS information from web services that rate the output of their predecessor web services in composites. Furthermore, we contribute two tools to verify if a web service adheres to its claimed QoS described with a performance function. For this verification, claimed performance is compared with reading points gathered from spot-testing the quality of the web service. The first tool we discuss is function interpolation, the second one applies methods from computational trust. The paper also discusses the advantages and drawbacks of both tools as well as the influence of measuring errors.

Journal or Publication Title: 21th IEEE International Conference on Web Services
ISBN: 978-1-4799-5054-6/14
Divisions: 20 Department of Computer Science > Telecooperation
20 Department of Computer Science
Date Deposited: 26 Mar 2015 08:38
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