Semantic expressions of geographical ontology in the city reference frame model
Spatial relations are the foundation of spatial analysis which has important roles in GIS.A reasonable coordinate frame model should be able to describe the orientation relations of two geographic objects clearly,which is part of spatial relations.The reference frame model,which is built according to the spatial pattern of city layout and reflects humans geographic cognition,is helpful in qualitative spatial reasoning,geographic semantic expression,and inquiring based on the natural languages.Geographical ontology is about the knowledge and concepts which have in common in the domain of geography.A semantic model based on ontology can describe the connection of two concepts and provide a new way to construct concept models.This paper mainly studied the meaning of geographic concepts based on 12-direction city coordinate frame model of Beijing.The way of exchanging geographic knowledge and geographic semantic expressions are also important parts of this paper.Based on the reference frame model,the paper built a knowledge database of geographic ontology.The spatial and non-spatial knowledge could be expressed and inferred by the database.This research makes full preparation for establishing the LBS service structure supporting natural languages.
Ontology spatial cognition coordinates frame model semantics natural language
Hengcai Zhang Jing Zhang Wenqian Chen
College of Resources Environment & Tourism,Capital Normal Univ.100037,Beijing,China
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）