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OCL for formal modelling of topological modelling constraints involving regions with broad boundaries / L. Bejaoui in Geoinformatica, vol 14 n° 3 (July 2010)  

Public [article]  inGeoinformatica > vol 14 n° 3 (July 2010) . - pp 353 - 378 Titre : OCL for formal modelling of topological modelling constraints involving regions with broad boundaries Type de document : Article/Communication Auteurs : L. Bejaoui, Auteur ; F. Pinet, Auteur ; Monique Schneider, Auteur Année de publication : 2010 Article en page(s) : pp 353 - 378 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] base de données localisées [Termes IGN] contrainte d'intégrité [Termes IGN] incertitude géométrique [Termes IGN] intégrité des données [Termes IGN] intégrité topologique [Termes IGN] limite indéterminée [Termes IGN] modèle topologique de données [Termes IGN] OCL Résumé : (Auteur) Integrity constraints can control topological relations of objects in spatial databases. These constraints can be modelled using formal languages such as the spatial extension of the Object Constraint Language (Spatial OCL). This language allows the expression of topological integrity constraints involving crisp spatial objects but it does not support constraints involving spatial objects with vague shapes (e.g. forest stand, pollution zone, valley or lake). In this paper, we propose an extension of Spatial OCL based on (1) a geometric model for objects with vague shapes, and (2) an adverbial approach for modelling topological constraints involving regions with broad boundaries. This new language provides an easiness in the formal modelling of these complex constraints. Our approach has been implemented in a code generator. A case study is also presented in the paper in the field of agriculture spreading activities. AOCL OVS takes account of the shape vagueness of spread parcel and improve spatial reasoning about them. Numéro de notice : A2010-105 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-010-0104-5 Date de publication en ligne : 07/02/2010 En ligne : https://doi.org/10.1007/s10707-010-0104-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30301 [article]

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
057-2010031	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Qualified topological relations between spatial objects with possible vague shape / L. Bejaoui in International journal of geographical information science IJGIS, vol 23 n° 7-8 (july 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 7-8 (july 2009) . - pp 877 - 921 Titre : Qualified topological relations between spatial objects with possible vague shape Type de document : Article/Communication Auteurs : L. Bejaoui, Auteur ; F. Pinet, Auteur ; S. Schneider, Auteur ; Yvan Bédard, Auteur Année de publication : 2009 Article en page(s) : pp 877 - 921 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] contrainte d'intégrité [Termes IGN] imprécision des données [Termes IGN] objet géographique [Termes IGN] relation topologique [Termes IGN] requête spatiale Résumé : (Auteur) Broad boundary is generally used to replace one-dimensional boundary for spatial objects with vague shape. For regions with broad boundary, this concept should respect both connectedness and closeness conditions. Therefore, some real configurations, like regions with partially broad boundary (e.g. lake with rocky and swamp banks), are considered invalid. This paper aims to represent different levels of shape vagueness and consider them during the identification of topological relations. Then, an object with vague shape is composed by two crisp components: a minimal extent and a maximal extent. Topological relations are identified by applying the 9-Intersection model for the subrelations between the minimal and maximal extents of objects involved. Four subrelations are then represented through a 4-Intersection matrix used to classify the topological relations. For regions with broad boundary, 242 relations are distinguished and classified into 40 clusters. This approach supports an adverbial expression of integrity constraints and spatial queries. Copyright Taylor & Francis Numéro de notice : A2009-340 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810802022814 En ligne : https://doi.org/10.1080/13658810802022814 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29970 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09051	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09052	RAB	Revue	Centre de documentation	En réserve L003	Disponible