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Visualizing geospatial information uncertainty: what we know and what we need to know / Alan M. MacEachren in Cartography and Geographic Information Science, vol 32 n° 3 (July 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 3 (July 2005) . - pp 139 - 160 Titre : Visualizing geospatial information uncertainty: what we know and what we need to know Type de document : Article/Communication Auteurs : Alan M. MacEachren, Auteur ; A. Robinson, Auteur ; S. Hopper, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 139 - 160 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] aide à la décision [Termes IGN] analyse comparative [Termes IGN] analyse de la valeur [Termes IGN] incertitude des données [Termes IGN] modèle d'incertitude [Termes IGN] qualité des données [Termes IGN] représentation cartographique [Termes IGN] visualisation Résumé : (Auteur) Developing reliable methods for representing and managing information uncertainty remains it persistent and relevant challenge to GIScience. Information uncertainty is an intricate idea, and recent examinations of this concept have generated many perspectives on its representation and visualization, with perspectives emerging from a wide range of disciplines and application contexts. In this paper, we review and assess progress toward visual tools and methods to help analysis manage and understand information uncertainty. Specifically, we report on efforts to conceptualize uncertainty, decision making with uncertainty, frameworks for representing uncertainty, visual representation and user control of displays of information uncertainty, and evaluative efforts to assess the use and usability of visual displays of uncertainty. We conclude by identifying seven key research challenges in visualizing information uncertainty, particularly as it applies to decision making and analysis. Numéro de notice : A2005-416 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/1523040054738936 En ligne : https://doi.org/10.1559/1523040054738936 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27552 [article]

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Assessment of simulated cognitive maps: the influence of prior knowledge from cartographic maps / R.E. Lloyd in Cartography and Geographic Information Science, vol 32 n° 3 (July 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 3 (July 2005) . - pp 161 - 179 Titre : Assessment of simulated cognitive maps: the influence of prior knowledge from cartographic maps Type de document : Article/Communication Auteurs : R.E. Lloyd, Auteur Année de publication : 2005 Article en page(s) : pp 161 - 179 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique [Termes IGN] apprentissage automatique [Termes IGN] apprentissage dirigé [Termes IGN] base de connaissances [Termes IGN] carte cognitive [Termes IGN] carte de Kohonen [Termes IGN] congruence [Termes IGN] représentation cartographique [Termes IGN] représentation mentale spatiale [Termes IGN] réseau neuronal artificiel [Termes IGN] simulation Résumé : (Auteur) Real cognitive maps encoded by humans are difficult to study using experimental methods because they are a product of complex processes whose content and timing, cannot easily be known or controlled. This paper assesses the value of using neural network model simulations for investigating cognitive maps. The study simulated the learning of mapped city locations in South Carolina from reference sites in the three primary regions of the state using Kohonen selforganizing maps. The learning performances of models were considered based on available prior knowledge. Bi-dimensional regression analyses were used to assess the congruity of the simulated cognitive maps with a cartographic map and with sketch maps produced by human subjects. Error analyses indicated differences between central and peripheral reference sites. The cities known by subjects living at a central location were more evenly distributed in space and associated with significantly smaller errors. Models that learned combined state boundary and interstate highway information as prior knowledge or simultaneously with city locations consistently produced the best simulation results. The results indicated simulated cognitive maps could be used effectively to study the acquisition of spatial knowledge. Numéro de notice : A2005-417 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1559/1523040054738963 En ligne : https://doi.org/10.1559/1523040054738963 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27553 [article]

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System design considerations for the development of an electronic statistical atlas / Lysandros Tsoulos in Cartography and Geographic Information Science, vol 32 n° 3 (July 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 3 (July 2005) . - pp 181 - 194 Titre : System design considerations for the development of an electronic statistical atlas Type de document : Article/Communication Auteurs : Lysandros Tsoulos, Auteur Année de publication : 2005 Article en page(s) : pp 181 - 194 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] architecture client-serveur [Termes IGN] atlas numérique [Termes IGN] cartographie statistique [Termes IGN] conception cartographique [Termes IGN] GML [Termes IGN] interface utilisateur [Termes IGN] internet [Termes IGN] logiciel libre [Termes IGN] système d'information géographique [Termes IGN] Union Européenne [Termes IGN] XML Résumé : (Auteur) In the recent history of cartography, atlases deserve a prominent status among Cartographic products due to the variety of their thematic content, the rather friendly appearance and their utilization by a wide spectrum of users. Advances in information technology, and more specifically in geographic information systems and digital mapping, have altered the fundamental way of using maps, and thus they have a major impact on every aspect of electronic atlas design and development. Although considerable effort has been made towards the production of electronic atlases, and successful systems are available, there are still a number of factors that must be considered towards the improvement of their design and functional characteristics. This paper elaborates on those factors and suggests a specific approach toward the design and development of electronic atlases, particularly electronic statistical atlases. This approach has been used for the development of the Statistical atlas of the European Union (STATLAS_EU), which is intended to provide a user-friendly resource for statistical analysis. Numéro de notice : A2005-418 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/1523040054738954 En ligne : https://doi.org/10.1559/1523040054738954 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27554 [article]

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Creating buffers on surfaces / X. Li in Cartography and Geographic Information Science, vol 32 n° 3 (July 2005)  

Public [article]  inCartography and Geographic Information Science > vol 32 n° 3 (July 2005) . - pp 195 - 210 Titre : Creating buffers on surfaces Type de document : Article/Communication Auteurs : X. Li, Auteur ; C.L. Larson, Auteur ; A.B. Rex, Auteur Année de publication : 2005 Article en page(s) : pp 195 - 210 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] analyse spatiale [Termes IGN] distance euclidienne [Termes IGN] données maillées [Termes IGN] données vectorielles [Termes IGN] montagne [Termes IGN] système d'information géographique [Termes IGN] zone tampon Résumé : (Auteur) Creating buffers is an important function used in geographic information systems (GIS) to perform spatial analysis. However, delineating buffers for setbacks in conservation and planning applications is problematical in mountainous areas. A typical vector buffer function in GIS calculates two-dimensional (2D) Euclidean distance (i.e., planimetric distance) instead of surface (or slope) distance and results in an inaccurate representation of buffers when they are verified in the field. A method of delineating buffers on surfaces in the raster data model is presented in this paper. Ali efficient implementation of the method is achieved through the use of a min-heap and a hash-table based location index. The method is tested and analysed on both hypothetical and real surface datasets. Numéro de notice : A2005-419 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/1523040054738945 En ligne : https://doi.org/10.1559/1523040054738945 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27555 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-05031	RAB	Revue	Centre de documentation	En réserve L003	Disponible