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Auteur Mathias Versichele |
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Time-geographic derivation of feasible co-presence opportunities from network-constrained episodic movement data / Mathias Versichele in Transactions in GIS, vol 18 n° 5 (October 2014)
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Titre : Time-geographic derivation of feasible co-presence opportunities from network-constrained episodic movement data Type de document : Article/Communication Auteurs : Mathias Versichele, Auteur ; T. Neutens, Auteur ; Manuel Claeys Boùùaert, Auteur ; et al., Auteur Année de publication : 2014 Article en page(s) : pp 687 – 703 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatio-temporelle
[Termes IGN] Bluetooth
[Termes IGN] capteur passif
[Termes IGN] implémentation (informatique)
[Termes IGN] milieu urbain
[Termes IGN] objet mobile
[Termes IGN] réseau routierRésumé : (Auteur) Certain datasets on moving objects are episodic in nature – that is, the data is characterized by time gaps during which the position of the object is unknown. In this article, a model is developed to study the sparsely sampled network-constrained movement of several objects by calculating both potential and feasible (i.e. more likely) co-presence opportunities over time. The approach is applied to the context of a static sensor network, where the location of an object is only registered when passing a sensor location along a road network. Feasibility is incorporated based on the deviation from the shortest path. As an illustration, the model is applied to a large Bluetooth tracking dataset gathered at a mass event. The model output consists of maps showing the temporal evolution of the distribution of feasible co-presence opportunities of tracked visitors over the network (i.e. the number of visitors that could have been present together). We demonstrate the model's usefulness in studying the movement and distribution of a crowd over a study area with relatively few sampling locations. Finally, we discuss the results with a special emphasis on the distinction between feasible and actual presence, the need for further validation and calibration, and the performance of the implementation. Numéro de notice : A2014-510 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/URBANISME Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12050 Date de publication en ligne : 12/09/2013 En ligne : https://doi.org/10.1111/tgis.12050 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74109
in Transactions in GIS > vol 18 n° 5 (October 2014) . - pp 687 – 703[article]