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Managing sensor traffic data and forecasting unusual behaviour propagation / C. Bauzer Medeiros in Geoinformatica, vol 14 n° 3 (July 2010)  

Public [article]  inGeoinformatica > vol 14 n° 3 (July 2010) . - pp 279 - 305 Titre : Managing sensor traffic data and forecasting unusual behaviour propagation Type de document : Article/Communication Auteurs : C. Bauzer Medeiros, Auteur ; M. Joliveau, Auteur ; Geneviève Jomier, Auteur ; F. De Vuyst, Auteur Année de publication : 2010 Article en page(s) : pp 279 - 305 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] analyse spatio-temporelle [Termes IGN] base de données spatiotemporelles [Termes IGN] comportement [Termes IGN] données multicapteurs [Termes IGN] réseau de capteurs [Termes IGN] trafic routier [Termes IGN] traitement de données localisées Résumé : (Auteur) Sensor data on traffic events have prompted a wide range of research issues, related with the so-called ITS (Intelligent Transportation Systems). Data are delivered for both static (fixed) and mobile (embedded) sensors, generating large and complex spatio-temporal series. This scenario presents several research challenges, in spatio-temporal data management and data analysis. Management issues involve, for instance, data cleaning and data fusion to support queries at distinct spatial and temporal granularities. Analysis issues include the characterization of traffic behavior for given space and/or time windows, and detection of anomalous behavior (either due to sensor malfunction, or to traffic events). This paper contributes to the solution of some of these issues through a new kind of framework to manage static sensor data. Our work is based on combining research on analytical methods to process sensor data, and data management strategies to query these data. The first aspect is geared towards supporting pattern matching. This leads to a model to study and predict unusual traffic behavior along an urban road network. The second aspect deals with spatio-temporal database issues, taking into account information produced by the model. This allows distinct granularities and modalities of analysis of sensor data in space and time. This work was conducted within a project that uses real data, with tests conducted on 1,000 sensors, during 3 years, in a large French city. Copyright Springer Numéro de notice : A2010-102 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article DOI : 10.1007/s10707-010-0102-7 Date de publication en ligne : 28/01/2010 En ligne : https://doi.org/10.1007/s10707-010-0102-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30298 [article]

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A system for change documentation based on a spatiotemporal database / M.A. Peerbocus in Geoinformatica, vol 8 n° 2 (June - August 2004)  

Public [article]  inGeoinformatica > vol 8 n° 2 (June - August 2004) Titre : A system for change documentation based on a spatiotemporal database Type de document : Article/Communication Auteurs : M.A. Peerbocus, Auteur ; C. Bauzer Medeiros, Auteur ; Geneviève Jomier, Auteur ; Agnès Voisard, Auteur Année de publication : 2004 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] base de données spatiotemporelles [Termes IGN] données localisées dynamiques [Termes IGN] données spatiotemporelles [Termes IGN] gestion des documents [Termes IGN] implémentation (informatique) [Termes IGN] MapInfo [Termes IGN] modèle conceptuel de données Résumé : (Auteur) The evolution of geographic phenomena has been one of the concerns of spatiotemporal database research. However, in a large spectrum of geographical applications, users need more than a mere representation of data evolution. For instance, in urban management applications - e.g., cadastral evolution-users often need to know why, how, and by whom certain changes have been performed as well as their possible impact on the environment. Answers to such queries are not possible unless supplementary information concerning real world events is associated with the corresponding changes in the database and is managed efficiently. This paper proposes a solution to this problem, which is based on extending a spatiotemporal database with a mechanism for managing documentation on the evolution of geographic information. This solution has been implemented in a GIS-based prototype, which is also discussed in the paper. Numéro de notice : A2004-170 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1023/B:GEIN.0000017747.96815.70 En ligne : https://doi.org/10.1023/B:GEIN.0000017747.96815.70 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26697 [article]

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