Predictability in Human Mobility based on Geographical-boundary-free and Long-time Social Media Data
Paper i proceeding, 2018

Understanding of predictability in human mobility benefits a broad spectrum such as urban planning and traffic forecasting. In human mobility studies, geotagged social media data are being gradually accepted as a user-contributed data source. It remains unclear to what extent we can use geotagged social media data to predict individual mobility. In the present study, a dataset is collected and applied which includes 652,945 geotagged tweets generated by 2,933 Swedish users covering time spans of more than one year (3.6 years on average). Based on such a dataset, human mobility predictability has been explored from three aspects: 1) time history of mobility range indicating how people diffuse in space, 2) entropy and the corresponding predictability of mobility, and 3) the limits of predictability dependent on geographical boundaries and mobility range. This study reveals a dataset that captures Twitter users' mobility where they routinely visit a couple of regions at most of the time and occasionally explore new regions. A 70% potential predictability is obtained by measuring the entropy of each individual's geotagged activity trajectory using a half-day time interval. The predictability's dependence on mobility range is prolonged when the observation of mobility is geographical-boundary-free which also decreases predictability.

entropy

Human mobility

predictability

geotagged activity trajectory

information theory

Författare

Yuan Liao

Chalmers, Rymd-, geo- och miljövetenskap, Fysisk resursteori, Fysisk resursteori 2

Sonia Yeh

Chalmers, Rymd-, geo- och miljövetenskap, Fysisk resursteori

2018 21st International Conference on Intelligent Transportation Systems (ITSC)

2153-0017 (eISSN)

2068-2073 8569770

21st International Conference on Intelligent Transportation Systems (ITSC)
Maui, HI, USA,

Hållbara städer: användande av stora datamängder för att förstå och hantera rörelsemönster och trafikstockningar

Formas, 2017-01-01 -- 2019-12-31.

Styrkeområden

Transport

Energi

Ämneskategorier

Transportteknik och logistik

Kulturgeografi

Miljövetenskap

DOI

10.1109/ITSC.2018.8569770

Mer information

Senast uppdaterat

2019-03-28