一种时空过程的梯形分级描述框架及其建模实例

A Spatio-temporal Process Trapezoid Multi-level Description Framework and Its Modeling Case

以对象建模视图和事件模型为基础的自底向上的时空过程表达方法,缺少对地理时空现象的显式定义,在时空因果链的细化表达方面存在不足。本文设计一种时空过程的梯形分级描述框架STP-TRAP,对时空过程进行自顶向下的显式化建模和集成时空因果链的分级描述,并在事件模型基础上,通过引入约束关系描述扩展时空因果链的表达模式。土地利用变迁过程建模实例与土地利用管理信息系统的设计和实现证明,该框架对土地利用变迁时空过程表达效果较好,为土地利用变更数据管理提供了新的思路。

Spatio-temporal representation methods with bottom-up approach based on object modeling view and event model exist insufficiency in some aspects, such as explicit definition of geographic spatio-temporal phenomenon and finer-grained representation of spatio-temporal causality-chain. A spatio-temporal process trapezoid multi-level description framework （STP-TRAP） was proposed, and its specialties consisted in modeling spatio-temporal process explicitly using top-down approach and describing with multilevel fashion based on spatio-temporal causality-chains, and extending representation mode of spatio-temporal causality-chain by integrating constraint relationship description and event model as well. A land use change spatio-temporal processes modeling case and an application example of land use management system were given, and the framework was proved to be good for representation of land use change spatio-temporal processes, and provided a new thought for land use change data management.