街道等级：少数街道占大多数交通流量
Street Hierarchies: A Minority of Streets Account for a Majority of Traffic Flow
摘要：
城市街道是有等级的，大多数街道是平凡的，而少数街道是重要的。这个等级可以简单但优雅地用80/20原则来描述，即80%的街道连接较少（低于平均水平），而20%的街道连接良好（高于平均水平）;在20%的街道中，有1%的街道连接非常好。本文以一个欧洲城市为例，从几何和拓扑性质的角度，对这种街道层次结构进行了更详细的研究。基于实证研究，我们进一步证明了之前的一个猜想，即少数街道占大多数交通流量;更准确地说，20%的顶级街道容纳80%的交通流量（20/80），1%的顶级街道占20%以上的交通流量（1/20）。我们的研究为城市如何（自）组织提供了新的证据，有助于利用越来越多的移动地理信息来理解城市及其演变。
英文摘要：
Urban streets are hierarchically organized in the sense that a majority of streets are trivial, while a minority of streets is vital. This hierarchy can be simply, but elegantly, characterized by the 80/20 principle, i.e. 80 percent of streets are less connected (below the average), while 20 percent of streets are well connected (above the average); out of the 20 percent, there is 1 percent of streets that are extremely well connected. This paper, using a European city as an example, examined, at a much more detailed level, such street hierarchies from the perspective of geometric and topological properties. Based on an empirical study, we further proved a previous conjecture that a minority of streets accounts for a majority of traffic flow; more accurately, the 20 percent of top streets accommodate 80 percent of traffic flow (20/80), and the 1 percent of top streets account for more than 20 percent of traffic flow (1/20). Our study provides new evidence as to how a city is (self-)organized, contributing to the understanding of cities and their evolution using increasingly available mobility geographic information.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
