@article {D{\textquoteright}Ambrogio201081,
	title = {Model-driven quality engineering of service-based systems},
	journal = {Smart Innovation, Systems and Technologies},
	volume = {2},
	year = {2010},
	note = {cited By 0},
	pages = {81-103},
	abstract = {Web services are the building blocks of systems based on service-oriented architectures. A web service is a self-describing, open component that supports rapid composition of distributed applications. Web service definitions are used to describe the service capabilities in terms of the operations of the service and the input and output messages for each operation. Such definitions are expressed in XML by use of the Web Service Definition Language (WSDL). Unfortunately, a WSDL description only addresses the functional aspects of a web service without containing any useful description of non functional or quality of service (QoS) characteristics. This paper introduces a lightweight WSDL extension for the description of QoS characteristics of a web service. The extension is carried out as a metamodel transformation, according to principles and standards recommended by the Model Driven Architecture (MDA). The WSDL metamodel is introduced and then transformed into the Q-WSDL (QoS-enabled WSDL) metamodel. As an example application of Q-WSDL, the paper illustrates a model-driven method that exploits Q-WSDL in order to automatically predict and describe the QoS of systems based on composite web services specified by use of the Business Process Execution Language for Web Services (BPEL). The paper specifically addresses the prediction of the reliability attribute of QoS and is illustrated by use of an example application to a composite web service for travel planning. {\textcopyright} Springer-Verlag Berlin Heidelberg 2010.},
	keywords = {BPEL, Business process execution language for web services, Distributed applications, Forecasting, Information services, Meta-model transformations, Model driven architectures, Model-driven, Multimedia services, Quality of service, Service oriented architecture (SOA), Software architecture, Software design, UML, Web service definition languages, Web services, Websites, WSDL},
	isbn = {9783642133541},
	issn = {21903018},
	doi = {10.1007/978-3-642-13355-8_6},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879295871\&partnerID=40\&md5=6aebac9835244b3b880b8819ea5e68f2},
	author = {Andrea D{\textquoteright}Ambrogio},
	editor = {George, Maria}
}
@article {Bocciarelli2008228,
	title = {Model-driven performability analysis of composite web services},
	journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
	volume = {5119 LNCS},
	year = {2008},
	note = {cited By 14},
	pages = {228-246},
	abstract = {Web services are the building blocks of the emerging computing paradigm based on service-oriented architectures (SOAs). A web service is a self-describing, open component that supports rapid composition of distributed applications. In a SOA context, service providers are strategically interested both to predict and describe the QoS of the offered services. This paper introduces a model-driven approach to automatically predict and describe the QoS of composite web services specified by use of the Business Process Execution Language for Web Services. The paper is founded on a lightweight QoS-oriented extension of the WSDL and specifically addresses the QoS in terms of the performability attribute, which defines a combined measure of performance and reliability. The proposed approach is illustrated by use of an example application that shows how the performability analysis may lead to predictions that do not correspond to those obtained by approaches that only consider the performance attribute. {\textcopyright} 2008 Springer-Verlag Berlin Heidelberg.},
	keywords = {Building blockes, Business process execution language for web services, Combined measure, Composite web services, Distributed applications, Emerging computing paradigm, Information services, Model driven approach, Model-driven, Model-driven development, Perform-ability, Performance, Performance attributes, Quality of service, Reliability, Service oriented architecture (SOA), Service provider, Systems analysis, Web services},
	isbn = {3540698132; 9783540698135},
	issn = {03029743},
	doi = {10.1007/978-3-540-69814-2-15},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70349880842\&partnerID=40\&md5=2b62ddfcd5d7d53a52f20982c298e063},
	author = {Bocciarelli, P. and Andrea D{\textquoteright}Ambrogio}
}
