Spatial models in transport: a review and assessment of methodological issues
Spatial models in transport: a review and assessment of methodological issues
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发表时间:
2012
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通讯作者:
Chao Wang;M. Quddus;T. Ryley;M. Enoch;Lisa Davison
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作者:
Chao Wang;M. Quddus;T. Ryley;M. Enoch;Lisa Davison
Regression models that use spatial data are widely used in transport applications. Although they have proved to be valuable in identifying and understanding the contributory factors that influence phenomena like road traffic accidents and travel demand, there are a series of methodological issues that limit their usefulness. This paper examines some of these issues in spatial models. The Modifiable Areal Unit Problem (MAUP), occurs where the statistical inference and interpretation derived from the zones alters due to changes in zone boundaries. Evidence from both the simulated and empirical data confirms the existence of MAUP. Other methodological issues are examined, including ecological fallacy, spatial dependency, and the problem of matching individual observations to the correct spatial units. In order to avoid these problems, some strategies are recommended for addressing these issues in an integrated way. Finally, conclusions and further research avenues are discussed at the end of this paper.