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摘要
The present paper examines two neglected issues: fluctuation of hows and probability of occurrence, in entropy-based spatial interaction analysis. Variance of the estimated flow is derived to study its fluctuation. It is shown that unless a lower level of accuracy is acceptable, entropy estimates may not be appropriate especially when the scale of a spatial interaction system is small. It is further shown that the probability of having the most probable distribution under the entropy principle is;in fact very small. These two findings shed light on the application of entropy-based models.
