一种改进的基于事件-过程的时态模型研究  

Improved Event-Process Based on Spatiotemporal Model

作　　者：吴长彬[1] 闾国年[1] 

机构地区：[1]南京师范大学虚拟地理环境教育部重点实验室,南京市文苑路1号210046

出　　处：《武汉大学学报（信息科学版）》2008年第12期1250-1253,1278,共5页Geomatics and Information Science of Wuhan University

基　　金：国家863计划资助项目(2006AA12Z221);江苏省高校自然科学基础研究资助项目(08KJD170005)

摘　　要：针对当前基于事件时态模型研究的现状和存在的问题,从时空语义表达的目的和要求出发,提出了一种改进的基于事件-过程的时态模型(event-process based spatio-temporal model,E-PSTM),将事件进一步细分为若干过程的组成;采用面向对象的方法进行了模型的逻辑设计。通过模型在地籍变更系统的应用,证明其可方便地实现对土地登记事件和空间变迁过程语义的查询。Event can represent semantic meaning of spatiotemporal changes, but hardly illuminate detail operations of inner alteration and represent continual or more complex changes. The authors analyzed the scale and suhdividable characters of event and relationship between event and process. An improved event process based spatiotemporal model（E PSTM） is pro posed, in which view event is composed of some processes. There are three lypes of changes, disperse, linear and nonlinear, and process operations are divided into creation, alteration, maintenance and so on. The logical structure of E-PSTM with object oriented method is designed, and it is applied to cadastral alteration system. It can be efficiently queried and backdated the events, processes and semantic information about parcel spatiotemporal change.

关 键 词：时态模型 事件-过程 语义 地籍变更 

分 类 号：P208[天文地球—地图制图学与地理信息工程]