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Research on Service Discovery and Service Negotiation for Oriented UDDI

Author: WuGaoFeng
Tutor: FengXiuZhen
School: Beijing University of Technology
Course: Management Science and Engineering
Keywords: Service discovery process FCM clustering Service Availability Interval similarity Interval negotiation model
CLC: TP393.09
Type: Master's thesis
Year: 2011
Downloads: 63
Quote: 1
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Abstract


Web services is an emerging distributed computing model, it can be described on the web, publish, find and call the resulting formation of a standard set of interoperable applications on the Web. With the continuous expansion of Web services applications, service information resources on the network is increasingly rich. At the same time, a large number of Web services with similar functions seriously plagued by the service requester. How quickly and efficiently to best meet the needs of individual users of Web services are important issues faced by the researchers from the functional properties similar to many services rather than functional attributes. In this paper, Web services object of study, negotiation theory, combination of UDDI operating environment, the QoS of the service as a distinction and evaluation function is the same as or similar to the standard Web services negotiation to determine the value range of topics, research and analysis of surface UDDI service discovery and service negotiation. Research work and innovations of this paper include the following four aspects: In this paper, a QoS-based service discovery process. Functional attributes service discovery based on QoS requirements of the user and the Web Services Resource QoS information merge clustering FCM clustering for multiple service providers to provide similar Web services status after the classification sort results based on object clustering of similar sort to make the decision whether consultation, in order to meet user demand service discovery. Build a guaranteed service availability, service discovery model. Web services as a service negotiation object, service availability of major significance to the outcome of the consultations. In order to ensure the availability of services, this paper polling algorithm regularly turns availability metrics for Web services, to determine the the UDDI available rate. When available rate dropped warning value can immediately change the polling period, on the availability of monitoring. UDDI service availability assessment effectively guarantee the validity of the services provided by the service providers, service requestors find services and UDDI registration services. And thus to protect the user discovery service availability. We build based the interval similarity interval negotiation model. , Resulting in service due to the asymmetry of information, the dynamic nature of the negotiation environment and QoS attributes of uncertainty and ambiguity of both supply and demand is difficult to predict with a certain real values ??and characterization of QoS properties, often only to some interval number reflect the constraints resilient. Interval similarity-based negotiation model using interval similarity and interval estimates to develop optimal negotiation strategy, compared to other negotiation model is closer to reality. In this paper, the design interval of service-oriented negotiation algorithm. Interval with a relative from, to intersect and contains six order relation of the three forms, the supply and demand for services provided by and between the service requestor interval negotiated compromise and concessions algorithm is designed to resolve the uncertainty and ambiguity issues The interval boundary determination problem. By building a range of consultative decision model can effectively avoid the the negotiation impasse of produce, improve negotiation success rate.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > The application of computer network
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