Requirements for QoS-Based Web Service Description and Discovery

The goal of service oriented architectures (SOAs) is to enable the creation of business applications through the automatic discovery and composition of independently developed and deployed (Web) services. Automatic discovery of Web services (WSs) can be achieved by incorporating semantics into a ric...

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Bibliographic Details
Published in:IEEE transactions on services computing 2009-10, Vol.2 (4), p.320-337
Main Authors: Kritikos, K., Plexousakis, D.
Format: Article
Language:English
Subjects:
Architecture
Availability
Business
Computation
constraint programming
Delay
Equivalence
Internet service providers
Mathematical models
Monitoring
QoS modeling
Quality of service
requirements engineering
Roads
Security
Semantics
service discovery
service matchmaking
service selection
Web services
Web-based services
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Summary:The goal of service oriented architectures (SOAs) is to enable the creation of business applications through the automatic discovery and composition of independently developed and deployed (Web) services. Automatic discovery of Web services (WSs) can be achieved by incorporating semantics into a richer WS description model (WSDM) and by the use of semantic Web (SW) technologies in the WS matchmaking and selection (i.e., discovery) process. A sufficiently rich WSDM should encompass not only functional but also nonfunctional aspects like quality of service (QoS). QoS is a set of performance and domain-dependent attributes that has a substantial impact on WS requesters' expectations. Thus, it can be used for distinguishing between many functionally equivalent WSs that are available nowadays. This paper starts by defining QoS in the context of WSs. Its main contribution is the analysis of the requirements for a semantically rich QoS-based WSDM and an accurate, effective QoS-based WS Discovery (WSDi) process. In addition, a road map of extending current WS standard technologies for realizing semantic, functional, and QoS-based WSDi, respecting the above requirements, is presented.
ISSN:1939-1374
1939-1374
2372-0204
DOI:10.1109/TSC.2009.26