ISISTAN   23985
INSTITUTO SUPERIOR DE INGENIERIA DEL SOFTWARE
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Exploring Web Service QoS Estimation for Web Service Composition
Autor/es:
GUILLERMO RODRIGUEZ; CRISTIAN MATEOS; SANJAY MISRA
Lugar:
Kaunas
Reunión:
Conferencia; 26th International Conference on Information and Software Technologies (ICIST 2020); 2020
Institución organizadora:
Faculty of Informatics - Kaunas University of Technology
Resumen:
The growth of the Internet, the ubiquity of computers and the availability of communication networks impacted the design of systems, replacing the concept of an isolated personal computer with that of distributed and connected computers. A web service is a software component that provides a specific functionality, which can be consumed through the Internet. Software development through the assembly of independent services follows the Service-Oriented Computing (SOC) paradigm. A key in the SOC paradigm is that services are provided by third parties by exposing only access interfaces to the outside world. In this context, the analysis of issues related to the quality of service (QoS) becomes crucial for several development activities related to web services, spanning the discovery of services, their selection, composition and their adaptation in client systems. As far as we know, little has been done in terms of estimation of unknown quality attribute levels when those attributes have high priority in client systems. In this work, a statistical approach based on linear regression is explored to determine the relationship between quality attributes that web services expose and the metrics related to their interfaces specified in WSDL. This issue is a cornerstone in web service composition for verifying and ascertaining the levels of quality attributes provided by candidate services when QoS data is missing. Finally, we illustrate the approach by performing experiments with public QoS web service datasets and service interface metrics, explore its limitations, and delineate future steps.