A point-set-based approximation for areal objects: A case study of   representing localities

doi:10.1016/j.compenvurbsys.2009.05.001

CORC > 北京大学 > 地球与空间科学学院

	A point-set-based approximation for areal objects: A case study of representing localities
	Liu, Yu ; Yuan, Yihong ; Xiao, Danqing ; Zhang, Yi ; Hu, Jiangquan
刊名	computers environment and urban systems
	2010
关键词	Point-set-based approximation Vague areal object Locality Spatial relationships Uncertainty PART-WHOLE RELATIONS SPATIAL INFORMATION GIS UNCERTAINTY SUPPORT REGION PLACE MODEL
DOI	10.1016/j.compenvurbsys.2009.05.001
英文摘要	Since partonomy knowledge is an important component of human cognition, we propose a point-set-based region (PSBR) model to approximate areal objects, especially vague areal objects. Two major properties of this model are that it is cognition-accordant and that it can represent vague regions easily. Given a point-set-based model, we can estimate the corresponding region using various methods, including convex hull, minimum bounding box, one-class support vector machine, and point density. We can examine the spatial relationships between two PSBRs using the derived areal objects. Additionally, we present a number of methods to compute relationships directly, based on two PSBRs. In the case study, we use a number of localities in China to demonstrate applications of the PSBR model. The proposed model can be implemented easily in an object-relational database management system. Hence, it provides a reasonable representation for vague objects that takes both manageability and approximation into account, especially now that Web 2.0 is making point data more convenient to collect. (C) 2009 Elsevier Ltd. All rights reserved; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000274352800003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Computer Science, Interdisciplinary Applications; Engineering, Environmental; Environmental Studies; Geography; Operations Research & Management Science; EI; SSCI; 9; ARTICLE; 1; 28-39; 34
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/156186]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Liu, Yu,Yuan, Yihong,Xiao, Danqing,et al. A point-set-based approximation for areal objects: A case study of representing localities[J]. computers environment and urban systems,2010.
APA	Liu, Yu,Yuan, Yihong,Xiao, Danqing,Zhang, Yi,&Hu, Jiangquan.(2010).A point-set-based approximation for areal objects: A case study of representing localities.computers environment and urban systems.
MLA	Liu, Yu,et al."A point-set-based approximation for areal objects: A case study of representing localities".computers environment and urban systems (2010).