Abstract
In order to realize sharing and collaboration of spatial data and spatial analysis models, typical characteristics of cloud GIS are described. As a good solution of cloud GIS, ArcGIS server is introduced. On the basic, function structure of spatial decision support system based on ArcGIS Cloud (ACSDSS) is designed. Then, several key issues are studied, including publishing spatial data and analysis models, service query, ontology construction, services optimal-selection, the procedure of spatial data and models composition. It provides theoretical support for the realization of efficient and intelligent Cloud Spatial Decision Support System.
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