位置感知计算中定位信息的自然语言描述

Natural Language Description of Location Information in Location-Aware Computing

讨论位置感知计算中定位信息表达存在的不足,引入自然语言描述作为补充。介绍自然语言中的空间概念,并分析了影响空间定位信息向自然语言转换的因素,归纳为尺度依赖、方向依赖和身份依赖,讨论制约因素影响下的参考框架、参考点和方位词的选择,并以地图作为空间转化媒介,给出一组人们日常使用的定位描述句式。最后以车辆监控系统和图书馆导航为测试平台,针对室外和室内两种不同应用环境进行了自然语言描述实验。

The conventional representation of location information is hard to understand for human in location-aware computing, but the natural language is a beneficial supplement. This paper introduces the spatial concept of natural language and discusses the model of translating the location information into natural language. The translation, which is restricted by all kinds of reasons,such as scale,cognition and user＇s task, is not a simple process. This paper analyses the factors of translation, discusses the choice of spatial concept according to the influence, and provides a group of descriptive sentences for location representation. At last, some case studies are shown to illustrate the effectiveness of the proposed method with respect to its indoor and outdoor situations.