Evaluating the friction of distance parameter in gravity models

Evaluating the friction of distance parameter in gravity models
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评估重力模型中距离参数的摩擦力

DOI:
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发表时间:
1974
期刊:
影响因子:
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通讯作者:
J. Ord
J. Ord
中科院分区:
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文献类型:
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作者:
A. Cliff;R. Martin;J. Ord

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(1974)重力模型中距离参数的摩擦力评价,中国科学院学报(自然科学版)。研究8,281 - 286。在本文中,我们考虑了用最小二乘回归校准的有约束和无约束重力模型中人口值之间的映射模式(空间自相关)是否阻碍了距离项系数的解释。报告显示,除了最有可能发生在城市模式内部而不是城市模式之间的某些情况外,不应出现真正的解释问题。这一发现在一定程度上不同于Curry(1972)和Johnston(1973)的发现。本文的结论得到了理论和实证结果的支持。
Cliff A. D., Martin R. L. and Ord J. K. (1974) Evaluating the friction of distance parameter in gravity models, Reg. Studies 8, 281–286. In this paper we consider whether map pattern (spatial autocorrelation) among the population values in constrained and unconstrained gravity models calibrated by least squares regression hinders interpretation of the coefficient of the distance term. It is shown that, except in certain cases which are most likely to occur in intra-, rather than inter-, urban models, no real problem of interpretation should arise. This finding differs to some extent from those of Curry (1972) and Johnston (1973). The conclusions are supported by both theoretical and empirical results.