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existing web map systems have integrated multi-scale geographical information and supplied friendly visualization interfaces. Furthermore, volunteered geographical information, which is captured and released on web map framework, is an essential source for emergency surveying and mapping supports. However, the emergency mapping service on web map has more uncertainty. This paper proposes an Optimal...
How to measure QoS is one of the key issues in Web service selection. The paper puts forward a novel method to collect and analyze the user's behavior of service selection, and adjust the attributes and corresponding weight coefficients for QoS measurement automatically. This method could solve the problem of the determination indicator and corresponding weights for service selection with QoS constraint...
With the development of Web service technology, SOA has so many applications in industries. How to evaluate a domain oriented service becomes an important issue at present. This paper puts forward an extended SOA (exSOA) architecture and a domain expert-based evaluation model for Web service. It evaluates the candidate service by considering the evaluation result from domain expert and the constraint...
For most SoCs, off-chip DRAM is an important resource that is shared by many heterogeneous function units(FU).To meet different memory access requirements by these FUs,it is crucial that the memory subsystem is capable of providing different quality of service(QoS).Due to the nature of DRAM, the available bandwidth greatly depends on the memory access sequence. However,conventional schedulers are...
Along with the rapid growth of the Web service, the research of non-functional properties of Web service(QoS) becomes a hotspot. The work in this paper is based on an extended service model. It puts forward a metric policy of comprehensive QoS, and the matching algorithm including two aspects: non-QoS constraint and QoS constraint. The experimental results prove that the algorithm is reliable and...
With the development of SOA (service-oriented architecture) and SOC (service-oriented computing), the quality of service (QoS) was more and more important than before. How to access, store and measure the QoS in complex network has been a key work for the SOA. An expanded service model supporting QoS is proposed in this paper, and the model supports service publishing, selection based on QoS. In the...
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