Service-oriented architecture facilitates rapid development and management of large-scale distributed servicebased systems (SBS), where new workflows are composed of available services. Besides services’ capabilities, the qualities of services (QoS) also need to be considered in service composition in order to have high-quality workflows. The QoS profiles of services provided by their service p...

Predicting quality of services (QoS) is an important need when ranking cloud services for selection. QoS values of cloud services usually depend heavily on the user’s and service’s environments. Therefore, personalized QoS value prediction for cloud services is more desirable to users. Collaborative Filtering (CF) has recently been applied to personalized QoS prediction for services on the Web....

Intensive efforts are made in the Web services selection literature by these days mainly because of the overwhelming interest of the community in the services provided over the Web. In selecting best services, the non functional properties of such services are proven to be more and more important; these describe the Quality of service that is the key factor in the selection process.In this pape...

This paper presents a CORBA-based Quality-of-Service (QoS) management framework for distributed multimedia services and applications. The QoS MIB has been defined for the QoS management of various multimedia services, and consists of information objects that represent a set of layered QoS parameters. These managed objects are organized into four logical groups: service, application, system, and...

0169-023X/$ see front matter 2008 Elsevier B.V doi:10.1016/j.datak.2008.08.004 * Corresponding authors. E-mail addresses: [email protected] (M. Fugin 1 This work has been partially funded by the Italia Future complex architectures for Web-Services-based delivery of services and objects require applications able to deal with different levels of Quality of Service (QoS) and able to describe a...

Geographic information (GI) services are increasingly the state of the art in geoprocessing, promising novel geospatial solutions, products and services. Dynamic chaining of GI services however, presents exciting quality of service (QoS) challenges. Consequently, sustainable use of GI services demands careful consideration of the diverse user requirements and the complexities of dynamic service...

Due to the increasing growth of Web Services, Quality of Service (QoS) is becoming a key issue in web services community. Providers and clients need to use QoS-aware architectures to get/ensure end-to-end QoS. The QoS delivery to clients is highly affected by the web service performance itself, by the hosting platform (e.g., Application Server) and by the underlying network (e.g., Internet). Th...

Web Services is emerging as a promising technology. With the popularity of Web Services technology, people have recognized the importance of Web Services management. How to provide high-quality services for people is a problem to be resolved. QoS (Quality of Service) is an important guideline of Web Services quality and the base of Web Services management. In this paper, we propose a QoS-based ...