Urban Informatics Using Mobile Network Data by Santi Phithakkitnukoon

Author:Santi Phithakkitnukoon
Language: eng
Format: epub
ISBN: 9789811967146
Publisher: Springer Nature Singapore

(5.4)

where w(j) is a weight function that varies with the level of connectivity at the usage location j as follows:

(5.5)

where f(j) is the number of connections (i.e., calls made or received) at the mobile usage location j, so a mobile usage location with a higher connectivity has a lower weight, and vice versa.

For each suggested route, the distance mk is calculated, and the route with the smallest mk is chosen as the most likely route taken by the subject, and the mode choice is determined accordingly. With our transport mode inference method, we discovered that driving is the mode of choice for 4500 of the 5405 respondents, while transit is the mode of choice for 905 of them, accounting for 83.26% (driving) and 16.74% (transit). These percentages correspond to actual survey statistics from Eurostat [86] and ECORYS Transport of Portugal [87], which show 85% for driving and 15% for transport. For our ego-subjects, driving is the choice of 67 subjects, while transit is the choice of 33 subjects.

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