Are the Poor Digitally Left Behind? Indications of Urban Divides Based on Remote Sensing and Twitter Data

Autor: Hannes Taubenböck, Jeroen Staab, Xiao Xiang Zhu, Christian Geiß, Stefan Dech, Michael Wurm
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: ISPRS International Journal of Geo-Information, Vol 7, Iss 8, p 304 (2018)
Druh dokumentu: article
ISSN: 2220-9964
DOI: 10.3390/ijgi7080304
Popis: Every city is—quoting Plato—divided into two, one city of the poor, the other of the rich. In this study we test whether the economic urban divide is reflected in the digital sphere of cities. Because, especially in dynamically growing cities, ready-to-use comprehensive data sets on the urban poor, as well as on the digital divide, are not existent, we use proxies: we spatially delimit the urban poor using settlement characteristics derived from remote sensing data. The digital divide is targeted by geolocated Twitter data. Based on a sample of eight cities across the globe, we spatially test whether areas of the urban poor are more likely to be digital cold spots. Over the course of time, we analyze whether temporal signatures in poor urban areas differ from formal environments. We find that the economic divide influences digital participation in public life. Less residents of morphological slums are found to be digitally oriented (“are digitally left behind”) as compared to residents of formal settlements. However, among the few twitter users in morphological slums, we find their temporal behavior similar to the twitter users in formal settlements. In general, we conclude this discussion, this study exemplifies that the combination of both heterogeneous data sets allows for extending the capabilities of individual disciplines for research towards urban poverty.
Databáze: Directory of Open Access Journals