A Mobility Model for Synthetic Travel Demand from Sparse Individual Traces
Preprint, 2021

Knowing how much people travel is essential for lowering carbon emissions in the transport sector. Empirical mobility traces collected from call detail records (CDRs), location-based social networks (LBSNs), and social media data have been used widely to study mobility patterns. However, these traces suffer from sparsity, an issue that has largely been overlooked. In order to extend the use of these low-cost and easy-to-access data, this study proposes an individual-based mobility model to fill the gaps in sparse mobility traces. The proposed model applies the fundamental mechanisms of exploration and preferential return to synthesise mobility to generate trips, designed to accommodate the sparse individual traces of geolocated social media data. We validated our model and found good agreement on origin-destination matrices and trip distance distributions for Sweden, the Netherlands, and São Paulo, Brazil. The proposed model can be used to synthesise mobility at any geographic scale, and the results can later be applied to modelling travel demand. We further apply the model to characterise domestic trip distances for a mixture of cities and countries globally. The trip distance distributions from the model-synthesised trips using sparse geolocations from 22 regions largely follow lognormal distributions and they reflect reasonable characteristics of regional heterogeneity. Further exploration is needed to understand the regional differences between the 22 cities and countries tested.

trip distance distribution

travel demand

origin-destination estimation

sparse mobility traces

social media data

Författare

Yuan Liao

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

Kristoffer Ek

Chalmers, Data- och informationsteknik

Eric Wennerberg

Chalmers, Data- och informationsteknik

Sonia Yeh

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

Jorge Gil

Chalmers, Arkitektur och samhällsbyggnadsteknik, Stadsbyggnad

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

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

Ämneskategorier

Annan data- och informationsvetenskap

Transportteknik och logistik

Kulturgeografi

Styrkeområden

Informations- och kommunikationsteknik

Transport

Energi

Drivkrafter

Hållbar utveckling

Relaterade dataset

Source code for the proposed individual mobility model. [dataset]

URI: https://github.com/TheYuanLiao/individual_mobility_model

Mer information

Skapat

2021-05-10