地理过程的案例表达与组织——以南海区海洋涡旋为例

The Representation and Organizational of Geographical Spatio-temporal Process Case

案例模型是基于案例推理方法(CBR)的推理基础,而时空数据模型是地理信息系统时空表达的概念基础。基于案例的推理方法应用于地理领域,案例表达则不能仅采取传统的表示方法,需要结合地理问题的特点;但时态地理信息系统(T-GIS)的时空数据模型又不能直接采用,需要考虑地理案例表达和推理的需求。通过对地理案例应用的分析和时空过程特点的总结,提出分级描述框架的地理案例时空过程概念表达模型,并构建其物理表达模型。本文以中国南海海洋涡旋为例进行了验证,表明此模型可应用于具有完整生命周期且变化是连续渐进地理现象的研究。

The case model is the reasoning base of Case-Based Reasoning（CBR）,while the spatio-temporal data model is the concept base of GIS（Geographical Information System） spatial and temporal expression.When the Case-Based Reasoning method is used in geographical domain,it＇s unwise only use the traditional representation method to express the case,considering the characteristics of the geographical problems,because the geographical problems are different from others.Considering the requirement of representation and reasoning of geographical case,we cannot use the spatio-temporal data model of temporal Geographical Information System（T-GIS） directly.Through the analysis of geographic case application and the summary of spatial-temporal process characteristics,we proposed the conceptual representation model of geographical spatial-temporal process case which is based on the hierarchical description framework,and constructed the physical representation model.In this paper,we took the marine vortex in the South China Sea as an example to verify the experiment model.The results indicated that the expression model could be used in the geographical domain in which the phenomenon with a periodic life has continuous and gradual changes.The model is very significant as a way to organize and express the geographical spatio-temporal process.The GIS data model is expressed from the case perspective.It enabled the GIS to have the reasoning ability and it also expanded the using domain of CBR method from the traditional application of static domain to the spatio-temporal process.