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Origin of the scaling law in human mobility: Hierarchy of traffic systems
Phys. Rev. E 83, 036117 – Published 30 March, 2011
DOI: https://doi.org/10.1103/PhysRevE.83.036117
Abstract
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-like travel displacement distribution with tunable exponent, and display a scaling behavior in the probability density of having traveled a certain distance at a certain time. The simulation results, analytical results, and empirical observations reported in D. Brockmann et al. [Nature (London) 439, 462 (2006)] agree very well with each other.
Article Text
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