| Title | DYNAMICITY: Revealing city dynamics from citizens social media broadcasts |
|---|---|
| ID_Doc | 44770 |
| Authors | Gkatziaki, V; Giatsoglou, M; Chatzakou, D; Vakali, A |
| Title | DYNAMICITY: Revealing city dynamics from citizens social media broadcasts |
| Year | 2017 |
| Published | |
| Abstract | Social media and mobile devices have revolutionized the way people communicate and share information in various contexts, such as in cities. In today's "smart" cities, massive amounts of multiple forms of geolocated content is generated daily in social media, out of which knowledge for social interactions and urban dynamics can be derived. This work addresses the problem of detecting urban social activity patterns and interactions, by modeling cities into "dynamic areas", i.e., coherent geographic areas shaped through social activities. Social media users provide the information on such social activities and interactions in cases when they are on the move around the city neighborhoods. The proposed approach models city places as feature vectors which represent users visiting patterns (social activity), the time of observed visits (temporal activity), and the context of functionality of visited places category. To uncover the dynamics of city areas, a clustering approach is proposed which considers the derived feature vectors to group people's activities with respect to location, time, and context. The proposed methodology has been implemented on the DYNAMICITY platform which demonstrates neighborhood analytics via a Web interface that allows end-users to explore neighborhoods dynamics and gain insights for city cross-neighborhood patterns and inter-relationships. (C) 2017 Elsevier Ltd. All rights reserved. |
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