Zipf's law strikes again: the case of tourism
检验齐普夫定律在旅游业中的适用性，发现一种带凹性的等级规模法则成立，并利用样条回归预测国家游客到达量，用随机增长理论和区位基础解释凹性。
This paper examines the applicability of Zipf's law to tourism. It is established that a variation of this law holds in this case—a rank-size rule with concavity. Due to this non-linearity, it is shown that a spline regression provides an extremely convenient tool for predicting tourist arrivals in a country. The concavity is explained by appealing to random growth theory (lognormal distribution; Gibrat's law) and locational fundamentals.