Fig. 1
Qualitative comparison between real datasets from an experimental study (De Nadai et al. 2016), and the output of our algorithm. a Experimental results about human digital activity density in the cities of Milan and Rome, Italy. The highest density is registered in central areas, while lower densities are observed in peripheral ones. b Using our algorithm, we generate L=1,000 circular locations distributed in rings of decreasing densities. The first few rings contain the denser locations (darker central regions) and may parallel the city center of a urban environment, while the outer rings are less dense and represent peripheral areas (light gray regions). Source of a: (De Nadai et al. 2016). Parameters used to generate b: D=1,000, Σmin=3, Σmax=30, and γ=2.1. Details of the generative algorithm used are available in Appendix A