Journal
SCIENTIFIC REPORTS
Volume 5, Issue -, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/srep09136
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Funding
- DIGILE Internet of Things research program
- Tekes
- EIT ICT Labs
- EPSRC [P/L006340/1, EP/J005266/1]
- Shanghai Science and Technology Commission [15ZR1443000]
- IBM Faculty award
- EPSRC [EP/J005266/1, EP/L006340/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J005266/1, EP/L006340/1] Funding Source: researchfish
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Human mobility has been empirically observed to exhibit Levy flight characteristics and behaviour with power-law distributed jump size. The fundamental mechanisms behind this behaviour has not yet been fully explained. In this paper, we propose to explain the Levy walk behaviour observed in human mobility patterns by decomposing them into different classes according to the different transportation modes, such as Walk/Run, Bike, Train/Subway or Car/Taxi/Bus. Our analysis is based on two real-life GPS datasets containing approximately 10 and 20 million GPS samples with transportation mode information. We show that human mobility can be modelled as a mixture of different transportation modes, and that these single movement patterns can be approximated by a lognormal distribution rather than a power-law distribution. Then, we demonstrate that the mixture of the decomposed lognormal flight distributions associated with each modality is a power-law distribution, providing an explanation to the emergence of Levy Walk patterns that characterize human mobility patterns.
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