Differentiated service

About: Differentiated service is a research topic. Over the lifetime, 5539 publications have been published within this topic receiving 105225 citations.

Combining Quality of Service and Social Information for Ranking Services

Abstract: In service-oriented computing, multiple services often exist to perform similar functions. In these situations, it is essential to have good ways for qualitatively ranking the services. In this paper, we present a new ranking method, ServiceRank, which considers quality of service aspects (such as response time and availability) as well as social perspectives of services (such as how they invoke each other via service composition). With this new ranking method, a service which provides good quality of service and is invoked more frequently by others is more trusted by the community and will be assigned a higher rank. ServiceRank has been implemented on SOAlive, a platform for creating and managing services and situational applications. We present experimental results which show noticeable differences between the quality of service of commonly used mapping services on the Web. We also demonstrate properties of ServiceRank by simulated experiments and analyze its performance on SOAlive.

Dynamic staffing of service centers to provide substantially zero-delay service

Abstract: A service system provides substantially zero delay service and dynamically adjusts resources required to provide the service. According to an embodiment of the present invention, future staffing requirements of the service system are predicted by determining, of a number of customers currently in service, how many will remain in service at a predetermined future time and how many customers to arrive to the system in the future can be expected to remain in service at the predetermined future time. For customers in service, customers may be classified according to one or more attributes known for the customer. The attributes may be helpful to identify a type of service being provided to the customer and determine a remaining service time for the customer. Thus, the customer attributes may provide for more accurate staffing predictions than in the prior art.

System for hosting an on-line shopping service for remotely-located service providers

Abstract: An on-line communications service allows a plurality of service providers to provide services to respective groups of subscribers, with the on-line service from each provider being independent of the on-line service from other providers. The subscribers' access to features is maintained through service maps which are customized by the service provider interactively with the host computer. Upon log-on, the service map is downloaded to a subscriber's computer and defines the services which can be accessed, the appearance of the user interface and navigation through the services. Data for each provider's service is maintained separately from the data for other providers. Billing can be customized for each provider.

Using test cases as contract to ensure service compliance across releases

Abstract: Web Services are entailing a major shift of perspective in software engineering: software is used and not owned, and operation happens on machines that are out of the user control. This means that the user cannot decide the strategy to migrate to a new version of a service, as it happens with COTS. Therefore, a key issue is to provide users with means to build confidence that a service i) delivers over the time the desired function and ii) at the same time it is able to meet Quality of Service requirements. This paper proposes the use of test cases as a form of contract between the provider and the users of a service, and describes an approach and a tool to allow users running a test suite against a service, to discover if functional or non-functional expectations are maintained over the time. The approach has been evaluated by applying it to two case studies.