Centre de documentation
scientifique

Representation and manipulation of moving points: an extended data model for location estimation / J. Moreira in Cartography and Geographic Information Science, vol 26 n° 2 (April 1999)  

Public [article]  inCartography and Geographic Information Science > vol 26 n° 2 (April 1999) . - pp 109 - 123 Titre : Representation and manipulation of moving points: an extended data model for location estimation Type de document : Article/Communication Auteurs : J. Moreira, Auteur ; C. Ribeiro, Auteur ; J.M. Saglio, Auteur Année de publication : 1999 Article en page(s) : pp 109 - 123 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] espace-temps [Termes IGN] imprécision géométrique [Termes IGN] modèle conceptuel de données localisées [Termes IGN] objet mobile [Termes IGN] système d'information géographique [Termes IGN] système de gestion de bases de données relationnelles Résumé : (Auteur) In this paper we introduce a classification for spatiotemporal systems based on the properties of the represented objects. Building on this classification, we assert that complex objects can be derived from simpler ones, following an evolutionary approach which starts with the study of simple objects and ends by enriching them with new features. This paper focuses on the definition of a data model for the representation of moving points. The model is based on the decomposition of the trajectory of moving points into sections. The movement within each section of a trajectory is described by a variability function. Because for most systems it is not possible to store the exact knowledge about the movement of an object, the answers to queries may be imprecise. We propose two additional approaches to deal with imprecision the superset and the subset semantics based on a maximum value for the variability function, and a smooth technique to integrate them in the model. Finally, we analyze certain functional aspects of the implementation of the data model in a Relational Database Management System (RDBMS) and outline directions for future research. Numéro de notice : A1999-180 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/152304099782330725 En ligne : https://doi.org/10.1559/152304099782330725 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26377 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-99021	RAB	Revue	Centre de documentation	En réserve L003	Disponible