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Differentiated service

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


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Proceedings Article
01 Nov 2009
TL;DR: The DynamiCoS framework is presented, which aims at supporting the different phases required to provide end-users with automatic service discovery, selection and composition process in the runtime service creation process.
Abstract: Network-based software application services are receiving a lot of attention in recent years, as observed in developments as Internet of Services, Software as a Service and Cloud Computing. A service-oriented computing ecosystem is being created where the end-user is having an increasingly more active role in the service creation process. However, supporting end-users in the creation process, at runtime, is a difficult undertaking. Users have different requirements and preferences towards application services, use services in different situations and expect highly abstract mechanisms in the creation process. Furthermore, there are different types of end-users: some can deliver more detailed requirements or can be provided with more advanced request interface, while others can not. To tackle these issues and provide end-users with personalised service delivery, we claim that runtime automated service composition mechanisms are required. In this paper we present the DynamiCoS framework, which aims at supporting the different phases required to provide end-users with automatic service discovery, selection and composition process. In this paper we also present the developed prototype and its evaluation.

49 citations

Journal ArticleDOI
TL;DR: Results show that the proposed strategies effectively prioritize service types, providing them with better QoS, which makes FRAQoS and FRASPL specially suitable for class-based QoS provisioning in mobile networks.
Abstract: Flexible resource-allocation (FRA) strategies have been proposed in the literature to mitigate the high blocking rate caused in high-speed mobile communication networks when resource aggregation is used to increase the data rate. In this paper, new FRA strategies that cope with scenarios with multiple service types and multiple priorities are proposed. These are called the FRA strategy with differentiated priorities and quality of service (FRAQoS) and the FRA strategy with prioritized levels (FRASPL). The main distinguishing feature of these strategies is their capacity to prioritize some service types over others. FRAQoS prioritizes the quality of service (QoS) of particular service types over others by introducing the concepts of prioritized call degradation and compensation. However, FRAQoS provides a limited ability to prioritize particular service types over the rest because any incoming call, irrespective of its service type and priority, may trigger resource reallocations to service it. The FRASPL overcomes this limitation by introducing a call-admission mechanism that, when necessary, rejects calls originated by low-priority service types. This enhances the protection to high-priority service types. By prioritizing some services over the others, FRASPL can trade off capacity against QoS. FRAQoS represents particular limiting cases of FRASPL. A mathematical model is developed to investigate the performance of FRAQoS and FRASPL. Then, they are compared with other FRA strategies in a scenario with multiple differentiated service types. Results show that the proposed strategies effectively prioritize service types, providing them with better QoS. This makes FRAQoS and FRASPL specially suitable for class-based QoS provisioning in mobile networks.

48 citations

Journal ArticleDOI
TL;DR: This paper proposes an interactive service customization model to support individual service offering for customers and presents in detail a knowledge-based customizable service process model and the accompanying customization method.
Abstract: Mass customization has become one of the key strategies for a service provider to differentiate itself from its competitors in a highly segmented global service market. This paper proposes an interactive service customization model to support individual service offering for customers. In this model, not only that the content of an activity is customizable, but the process model can also be constructed dynamically according to the customer's requirements. Based on goal ontology, the on-demand customer requirements are transformed into a high-level service process model. Process components, which are building blocks for reusable standardized service processes, are designed to support on-demand process composition. The customer can incrementally define the customized service process through a series of operations, including activation of goal decomposition, reusable component selection, and process composition. In this paper, we first discuss the key requirements of the service customization problem. We then present in detail a knowledge-based customizable service process model and the accompanying customization method. Finally we demonstrate the feasibility of the our approach through a case study of the well-known travel planning problem and present a prototype system that enables users to interactively organize a satisfying travel plan.

48 citations

Patent
Alan Tsu-I Yaung1
30 Jul 2001
TL;DR: In this article, a plurality of service class implementations is provided for services from different vendors, wherein each service class implementation provides an implementation of methods and objects from a same abstract service class.
Abstract: Provided is a method, system, and program for enabling access to a plurality of services. A plurality of service class implementations is provided for services from different vendors, wherein each service class implementation provides an implementation of methods and objects from a same abstract service class. A service object is constructed for one service in response to at least one called method from one of the service class implementations. The service object includes information on resources of the service. Method calls are received from one service class implementation requesting information on service resources for one named service. The requested information is accessed from the service object for the named service to return to the method call.

48 citations

Journal ArticleDOI
01 Nov 2004
TL;DR: A conversational model supporting the management of long‐lasting interactions where several messages have to be exchanged before the service is completed and is inspired from the research developed in Computational Linguistics and in the area of Multi‐Agent Systems.
Abstract: The emerging standards for the specification of Web Services support the publication of the static interfaces of the operations they may execute. However, little attention is paid to the management of long-lasting interactions between the service providers and their consumers. Although this is not an issue in the case of “one-shot” services, it challenges the provision of services requiring the exchange of multiple messages between the business partners. In this article, we present a conversational model supporting the management of long-lasting interactions where several messages have to be exchanged before the service is completed. Our model aims at facilitating the consumers during the service invocation because in this way the establishment of short-term business relations can be simplified. To this extent, we provide a computational framework that can be exploited to manage a conversation between the consumer and the service provider. Our framework is inspired from the research developed in Computational Linguistics and in the area of Multi-Agent Systems to manage human-to-computer and agent-to-agent dialog. However, we employ techniques suitable to comply with the emerging Web Service standards and with the scalability requirements of the Internet.

48 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20224
202118
202023
201939
201836
201789