摘要
利用工作流技术建立空间信息工作流,为支持空间信息处理过程的规划和管理提供科学的途径。基于Petri网和UniNet理论,建立了空间信息工作流模型GWPN。该模型利用Petri网和UniNet的诸多优点,兼顾控制流和数据流,并充分考虑了过程中的空间语义约束,准确定义空间信息处理过程,解决了空间应用的特殊性问题。
In complex spatial analysis and decision applications, effective plan and management are desired. The geo-workflow technology provides a scientific solution to manage such geospatial processes. Based on Petri nets and UniNet theory, a geo-workflow model, named GWPN, is presented to support the process definition of geo-workflow. With the advantages of Petri nets and UniNet, GWPN can well solve not only the control flows but also the data flows. By combining the spatial semantic constrains, it can define spatial processes precisely to solve particular spatial-referenced issues in GIS applications.
出处
《计算机工程》
EI
CAS
CSCD
北大核心
2005年第16期1-3,共3页
Computer Engineering
