Topic
Differentiated service
About: Differentiated service is a research topic. Over the lifetime, 5539 publications have been published within this topic receiving 105225 citations.
Papers published on a yearly basis
Papers
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06 Nov 2009TL;DR: A general QoS-based service selection method that can express Web service's nonfunctional attributes in a semantic and extensible way by importing the proposed QoS ontology into OWL-S standards is developed.
Abstract: The ability to efficiently and effectively select the inter-organizational and heterogeneous services is the important support for the development of the Web service technology. Quality of service (QoS) profiles of Web services are crucial in determining which service best addresses the user desires and objectives. This paper developed a general QoS-based service selection method. By importing the proposed QoS ontology into OWL-S standards, the method can express Web service's nonfunctional attributes in a semantic and extensible way. Web service QoS based selection is formulated as a multi-criteria decision making (MCDM) which can be solved by using different MCDM models to evaluate QoS criteria of the candidate Web services. The values of quality parameters of a Web service are normalized to a non-negative real-valued number where higher normalized values represent higher levels of service performance. The proposed approach can be used as a solution for the complexity and reliability web service selection problem.
22 citations
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TL;DR: A scenario-oriented testing approach that can automatically generate test cases for service compositions specified by Business Process Execution Language for web services (WS-BPEL), a widely recognized executable service composition language is proposed.
Abstract: Nowadays, service oriented architecture (SOA) has become one mainstream paradigm for developing distributed applications. As the basic unit in SOA, web services can be composed to construct complex applications. The quality of web services and their compositions is critical to the success of SOA applications. Testing, as a major quality assurance technique, is confronted with new challenges in the context of service compositions. In this paper, we propose a scenario-oriented testing approach that can automatically generate test cases for service compositions. Our approach is particularly focused on the service compositions specified by Business Process Execution Language for web services (WS-BPEL), a widely recognized executable service composition language. In the approach, a WS-BPEL service composition is first abstracted into a graph model; test scenarios are then derived from the model; finally, test cases are generated according to different scenarios. We also developed a prototype tool implementing the proposed approach, and an empirical study was conducted to demonstrate the applicability and effectiveness of our approach. The experimental results show that the automatic scenario-oriented testing approach is effective in detecting many types of faults seeded in the service compositions.
22 citations
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TL;DR: An approach to derive formal specifications of Web Service compositions on the basis of the interpretation of informal user requests expressed in restricted Natural Language, which leverages the semantic and ontological description of a portfolio of known service operations.
Abstract: The introduction of Semantic Web techniques in Service-oriented Architectures enables explicit representation and reasoning about semantically rich descriptions of service operations. Those techniques hold promise for the automated discovery, selection, composition and binding of services. This paper describes an approach to derive formal specifications of Web Service compositions on the basis of the interpretation of informal user requests expressed in restricted Natural Language. Our approach leverages the semantic and ontological description of a portfolio of known service operations (called the Semantic Service Catalog). Each user request is processed against a Natural Language vocabulary that includes lexical constructs designed to convey the operations' semantics, in order to recognize and extract fundamental functional requirements implied by the request, and associate them to entries in the Catalog. In addition, the request interpreter extracts from the request the overall service logic, expressed in terms of a set of modular templates describing control and data flow among the selected operations. The result is a composition specification that associates on demand each user request to a new composed service. That specification is formal and can thus be transformed in an executable flow document for a target service composition engine.
21 citations
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22 Aug 2011TL;DR: This paper describes a new mobile service: customized check-ins, which lets any business provide a customized form for mobile users that allow them to mark (describe) business-related events in the social networks.
Abstract: This paper describes a new mobile service: customized check-ins. This service lets any business provide a customized form for mobile users that allow them mark (describe) business-related events in the social networks. So instead of the traditional check-ins models, introduced by the communication services, this service introduces business-oriented check-ins. For the business this service introduces a new way for advertising in the social networks. And this advertising model does not require any intermediate service. For the consumers this service introduces a way for exchanging access to the own social graph for some benefits (e.g. gifts, discounts, coupons etc.).
21 citations
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TL;DR: The IoT-based user-driven service modeling environment is proposed to provide an easy way to create IoT services and also provides the ontology-based context-information processing that produces and describes the context information for the IoT- based user- driven service.
Abstract: The existing Internet environment has been extended to the Internet of Things (IoT) as an emerging new paradigm. The IoT connects various physical entities. These entities have communication capability and deploy the observed information to various service areas such as building management, energy-saving systems, surveillance services, and smart homes. These services are designed and developed by professional service providers. Moreover, users' needs have become more complicated and personalized with the spread of user-participation services such as social media and blogging. Therefore, some active users want to create their own services to satisfy their needs, but the existing IoT service-creation environment is difficult for the non-technical user because it requires a programming capability to create a service. To solve this problem, we propose the IoT-based user-driven service modeling environment to provide an easy way to create IoT services. Also, the proposed environment deploys the defined service to another user. Through the personalization and customization of the defined service, the value and dissemination of the service is increased. This environment also provides the ontology-based context-information processing that produces and describes the context information for the IoT-based user-driven service.
21 citations