期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2004
卷号：XXXV Part B2
页码：212-217
出版社：Copernicus Publications
摘要：Geographic information (GI) services are increasingly the state of the art in geoprocessing, promising novel geospatial solutions, products and services. Dynamic chaining of GI services however, presents exciting quality of service (QoS) challenges. Consequently, sustainable use of GI services demands careful consideration of the diverse user requirements and the complexities of dynamic service chaining in view of the QoS limitations of the Internet. An initial and necessary step towards provision of QoS guarantees in Internet GIS is QoS-aware service chaining, where services are discovered and composed on the basis of their non-functional quality characteristics. The paper presents an architecture for QoS- aware service chaining and defines an extensible QoS model for GI services. Further, to facilitate the successful evolution of GI enterprise into effective service providing nodes on the GI service infrastructure, an integration framework for GI enterprises presented. While the provision of hard QoS guarantees on the Internet remains elusive, QoS-aware service chaining will greatly improve the quality experienced by Internet GI applications and users
关键词：Distributed GIS; web service; Quality; Performance; Internet; Spatial Infrastructures; quality of service
