移动点与参考地物时空关系的自然语言描述方法研究

Natural-Language Description of Spatio-temporal Relationships between Moving Points and Reference Features

基于分解-组合的思想,首先对移动点的运动轨迹进行细化,并分别对移动点与参考地物目标的时空拓扑关系进行描述,在此基础上综合考虑它们之间的方向关系和距离关系,并对自然语言时空关系进行定义和集成描述。最后,通过实例对移动点运动轨迹进行了自然语言描述和应用分析。文中实现的移动对象运动轨迹的形式化描述方法,可广泛应用于导航系统中,对时空查询、时空分析及时空推理等诸多问题的研究具有重要意义。

Modeling spatio-temporal relationships between moving objects is of great significance for spatio-temporal queries, spatio-temporal analysis and reasoning. Based on the slice representation of moving point＇s trajectory, a novel method is pro- posed to describe the spatio-temporal topological relationships between a moving point and reference feature. At the same time, an integrated framework is presented for the representation of spatio-temporal relationships between moving points and refer- ence features according to the description rules of natural language, where the topological, directional and distance relations be- tween moving points and reference features are considered together. Finally, a case study is provided to demonstrate the applica- tion and feasibility of the proposed method in this paper.