Preliminary Study on Development of General Software Tool for Spatial Decision Support System
空间决策支持系统通用软件工具的试验研究

Spatial Decision Support System (SDSS) is a new type of Spatial information Systems based on the integration between conventional Decision SupportSystem (DSS) and Geographic Information System (GIS ). In this paper, some interested problems are discussed :1 ) technical characteristics of SDSS and comparison between SDSS and GIS, SDSS and Expert System (ES); 2) designmethodology of SDSS and System Structure of SDSS General SoftwareTool (GST ) and 3 ) the key technical problems and their solving methods in development of SDSS/GST. It,is an effective way for development and application ofSDSS to formulate the concept of " Application frame and its instancing" inSDSS.