Errors and uncertainties in urban cellular automata

被引：115

作者：

Yeh, Anthony Gar-On

Li, Xia

机构：

[1] Univ Hong Kong, Ctr Urban Planning & Environm Management, Hong Kong, Hong Kong, Peoples R China

[2] Sun Yat Sen Univ, Sch Geog & Planning, Guangzhou 510275, Peoples R China

来源：

COMPUTERS ENVIRONMENT AND URBAN SYSTEMS | 2006年 / 30卷 / 01期

关键词：

uncertainty; cellular automata; urban simulation; GIS;

D O I：

10.1016/j.compenvurbsys.2004.05.007

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Errors and uncertainties are important issues in most geographical analyses and modelling processes. Cellular automata (CA) have been increasingly used for modelling geographical phenomena, such as the evolution of urban systems. Urban simulation frequently involves the inputs of a large set of spatial variables from GIS. The errors of data source in GIS can propagate through CA modelling processes. Moreover, CA models themselves also have modeling uncertainties because they are just an approximation to reality. These uncertainties have impacts on the outcome of urban simulation. Identification and evaluation of these errors and uncertainties are crucial for understanding and implementing the simulation results of urban CA modelling. It is found that some of the characteristics of errors and uncertainties in urban CA are quite unique which are not present in traditional GIS models. The study can help urban modelers and planners to understand more clearly the characteristics and implications of CA modelling. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：10 / 28

页数：19

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