The problem of QoS-based selecting a web service dynamically or composing a set of web services to conduct a business task has been investigated in this paper. It outlines the discovery of either atomic or composite services satisfying the request QoS requirements. After, the functional requirements matching is achieved where the request Inputs/Outputs syntactically and semantically match servi...

Web services which are language and platform independent self-contained web-based distributed application components represented by their interfaces can have different Quality of Service (QoS) characteristics such as performance, reliability and scalability. One of the major objectives of a web service provider and implementer is to be able to estimate and improve the QoS parameters of their we...

The research of QoS is concerned with multiple QoS requirements (multi-QR): queue delay, delay jitter and guaranteed throughput etc. As different QoS requirements have different attributes, it is hard to ensure multi-QR in one QoS mechanism. A common method to ensure multi-QR is normalizing multi-QR into one value range by a utility function and then finding the optimal solution of the utility ...

A composite Web service can be constructed and deployed by combining independently developed component services, each one may be offered by different providers with different non-functional Quality of Service (QoS) attributes. Therefore, a selection process is needed to identify which constituent services are to be used to construct a composite service that best meets the QoS requirements of it...

A component is the basic re-usable unit of composition to build composite systems by connecting to others through their provided and required ports. Checking the functional compliance between provided and required ports is necessary to build functional systems. At the same time, one of the most important issues today in Component-Based Software Engineering (CBSE) is the prediction of the compos...

The creation and wide use of new high quality demanding services (VoIP, High Quality Video Streaming) and the delivery of them over already saturated core and access network infrastructures have created the necessity for E2E QoS provisioning. Network Providers use at their infrastructures several kinds of mechanisms and techniques for providing QoS. Most known and widely used technologies are M...

With the recent advancement in intelligent transportation systems (ITS), vehicular network has become major force content dissemination, and it is essential to improve efficiency delivery quality service (QoS). The rapid growth data traffic limited resources have created a bottleneck dissemination. In addition, demand of high rate, low latency user's satisfaction on make dissemination more chal...

In this paper, we employed Naïve Bayes, Augmented Naïve Bayes, Tree Augmented Naïve Bayes, Sons & Spouses, Markov Blanket, Augmented Markov Blanket, Semi Supervised and Bayesian network techniques to rank web services. The Bayesian Network is demonstrated on a dataset taken from literature. The dataset consists of 364 web services whose quality is described by 9 attributes. Here, the attributes...

14 On the receipt of the service request, the QoS manager translates this request on one or more logical configurations based on the profile concept, and produces the corresponding configurations by accessing the system information repository (4). To decide about the possibility of the establishment of a configuration which is the mapping result of a logical configuration, the QoS manager asks ...