A Review on Current and Future Studies on Spatio-Temporal Data Models
Jiong Xie · Geography and Geo-Information Science · 2010
Theories of spatio-temporal representation and modeling are systematically analyzed and reviewed,which developed five stages with expansion based on static data models,object-oriented ones,based on object changes or event sequences ones,space-time integrated ones,and process-cored ones.Research status on spatio-temporal dynamic semantics,representation types of geographical entities,and scientific issues in geoinformatic domains are discussed,then the shortcomings are pointed out.Since the view-objected or view-evented with the snapshot,instead of the view-processed with the properties of evolution,is taken as representation,the intrinsic characteristics of dynamic entities are split.Therefore,it is not easy to carry out the spatio-temporal dynamic semantics description and dynamic functions operations of complex geographical entities.In the end,the describing methods of dynamic semantics which take the geographical evolution as a core,and the dynamic representing framework which brings into geographical objects,change mechanisms,and object changes,are presented,which are future studies of the spatio-temporal representation and modeling.Then the main researches on dynamic semantics,representation framework and integration mechanisms are discussed.