Origin of the Scaling Law in Human Mobility: Hierarchical Organization of Traffic Systems
Uncovering the mechanism leading to the scaling law in human trajectories is of fundamental importance in understanding many spatiotemporal phenomena. We propose a hierarchical geographical model to mimic the real traffic system, upon which a random walker will generate a power-law travel displacement distribution with exponent -2. When considering the inhomogeneities of cities* locations and attractions, this model reproduces a power-law displacement distribution with an exponential cutoff, as well as a waling behavior in the probability density of having trawled a certain distance at a certain time. Our results agree very well with the empirical observations reported in D. Brockmann et al, Nature 439, 462 (2006).
Xiao-Pu Han Qiang Hao
Department of Modern Physics, University of Science and Technology of China, Hefei 230026, Peoples Republic of China
国际会议
International Workshop on Statistical Physics and Computer Sciences(统计物理与计算机科学交叉研究国际研讨会 )
北京
英文
211-214
2010-07-08（万方平台首次上网日期，不代表论文的发表时间）