Concept of COGIS Brought Forward and Its Architecture Research

摘要

Based on the analysis of the development of GIS application and technology, this paper brought forward the concept of COGIS, namely Cooperative Operation GIS. COGIS is GIS facing group-users and supporting human-human interaction, which made it differ from former GISs. Then, the characteristics of general CSCW applications and the complexity of Geographical Information Science were analyzed, and the conclusion that COGIS was not a simple GIS layer on CSCW was reached. Further, this paper gave the hierarchical architecture of COGIS, and analyzed the cooperative platform in detail from (1)the basic elements; (2)collaboration patterns;(3)cooperation control mechanism; (4)synchronization mechanism;(5)security and (6)group communication and so on. With that, the problems about GIS applications such as (1) distributed multi-source GIS information and knowledge sharing platform,;(2)the fusion and visualization of GIS information;(3)virtual reality cooperative modeling and (4)dynamic simulation;(5)expert system and (6)decision-making based on GIS knowledge and so on are discussed. Finally, this paper analyzed COGIS application mode in brief.