Descripteur
Documents disponibles dans cette catégorie (181)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Graph-based matching of points-of-interest from collaborative geo-datasets / Tessio Novack in ISPRS International journal of geo-information, vol 7 n° 3 (March 2018)
[article]
Titre : Graph-based matching of points-of-interest from collaborative geo-datasets Type de document : Article/Communication Auteurs : Tessio Novack, Auteur ; Robin Peters, Auteur ; Alexander Zipf, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] appariement de points
[Termes IGN] conflation
[Termes IGN] Foursquare
[Termes IGN] Londres
[Termes IGN] OpenStreetMap
[Termes IGN] point d'intérêt
[Termes IGN] similitudeRésumé : (Auteur) Several geospatial studies and applications require comprehensive semantic information from points-of-interest (POIs). However, this information is frequently dispersed across different collaborative mapping platforms. Surprisingly, there is still a research gap on the conflation of POIs from this type of geo-dataset. In this paper, we focus on the matching aspect of POI data conflation by proposing two matching strategies based on a graph whose nodes represent POIs and edges represent matching possibilities. We demonstrate how the graph is used for (1) dynamically defining the weights of the different POI similarity measures we consider; (2) tackling the issue that POIs should be left unmatched when they do not have a corresponding POI on the other dataset and (3) detecting multiple POIs from the same place in the same dataset and jointly matching these to the corresponding POI(s) from the other dataset. The strategies we propose do not require the collection of training samples or extensive parameter tuning. They were statistically compared with a “naive”, though commonly applied, matching approach considering POIs collected from OpenStreetMap and Foursquare from the city of London (England). In our experiments, we sequentially included each of our methodological suggestions in the matching procedure and each of them led to an increase in the accuracy in comparison to the previous results. Our best matching result achieved an overall accuracy of 91%, which is more than 10% higher than the accuracy achieved by the baseline method. Numéro de notice : A2018-103 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi7030117 En ligne : https://doi.org/10.3390/ijgi7030117 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89518
in ISPRS International journal of geo-information > vol 7 n° 3 (March 2018)[article]Extraction of pluvial flood relevant volunteered geographic information (VGI) by deep learning from user generated texts and photos / Yu Feng in ISPRS International journal of geo-information, vol 7 n° 2 (February 2018)
[article]
Titre : Extraction of pluvial flood relevant volunteered geographic information (VGI) by deep learning from user generated texts and photos Type de document : Article/Communication Auteurs : Yu Feng, Auteur ; Monika Sester, Auteur Année de publication : 2018 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] apprentissage profond
[Termes IGN] Berlin
[Termes IGN] cartographie des risques
[Termes IGN] classification par réseau neuronal convolutif
[Termes IGN] contenu généré par les utilisateurs
[Termes IGN] données issues des réseaux sociaux
[Termes IGN] données localisées des bénévoles
[Termes IGN] inondation
[Termes IGN] Londres
[Termes IGN] Paris (75)
[Termes IGN] protection civile
[Termes IGN] risque naturel
[Termes IGN] zone sinistrée
[Termes IGN] zone urbaineRésumé : (Auteur) In recent years, pluvial floods caused by extreme rainfall events have occurred frequently. Especially in urban areas, they lead to serious damages and endanger the citizens’ safety. Therefore, real-time information about such events is desirable. With the increasing popularity of social media platforms, such as Twitter or Instagram, information provided by voluntary users becomes a valuable source for emergency response. Many applications have been built for disaster detection and flood mapping using crowdsourcing. Most of the applications so far have merely used keyword filtering or classical language processing methods to identify disaster relevant documents based on user generated texts. As the reliability of social media information is often under criticism, the precision of information retrieval plays a significant role for further analyses. Thus, in this paper, high quality eyewitnesses of rainfall and flooding events are retrieved from social media by applying deep learning approaches on user generated texts and photos. Subsequently, events are detected through spatiotemporal clustering and visualized together with these high quality eyewitnesses in a web map application. Analyses and case studies are conducted during flooding events in Paris, London and Berlin. Numéro de notice : A2018-105 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi7020039 En ligne : https://doi.org/10.3390/ijgi7020039 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89530
in ISPRS International journal of geo-information > vol 7 n° 2 (February 2018)[article]
Titre : Into the woods : Overlapping perspectives on the history of ancien forest Type de document : Monographie Auteurs : Sandrine Paradis-Grenouillet, Éditeur scientifique ; Chantal Aspe, Éditeur scientifique ; Sylvain Burri, Éditeur scientifique Editeur : Versailles : Quae Année de publication : 2018 Importance : 434 p. ISBN/ISSN/EAN : 978-2-7592-2907-9 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Angleterre
[Termes IGN] anthropisation
[Termes IGN] Argentine
[Termes IGN] Atlas marocain
[Termes IGN] botanique
[Termes IGN] coutume
[Termes IGN] forêt ancienne
[Termes IGN] forêt méditerranéenne
[Termes IGN] gestion forestière (antérieure à 2002)
[Termes IGN] histoire
[Termes IGN] Massif central (France)
[Termes IGN] patrimoine culturel
[Termes IGN] Pyrénées-orientales (66)
[Termes IGN] République Tchèque
[Termes IGN] Wallonie (Belgique)
[Vedettes matières IGN] SylvicultureRésumé : (éditeur) At the centre of concerns related to curbing the decline in forest biodiversity caused by increasing anthropogenic pressure and global change, old-growth forests are mainly characterised by the continuity of their tree cover. This has been defined mainly by their appearance on historical maps and by ecological criteria dating back to certain temporal cut-off points (about two centuries). Inherited over hundreds, even thousands, of years of interaction between Man and Nature, these ancient forests have been managed and shaped by past societies to meet their various needs, both domestic and industrial. Also, studying the historical trajectories of such forests, their responses to environmental and anthropogenic stress, and the long-term consequences of past human activities, is essential in order to better understand their current ecology and rethink their conservation. The development of pluridisciplinary and interdisciplinary research (ecology, paleoecology, history, archaeology, geography, sociology) now makes it possible not only to push back the hitherto accepted thresholds of ancientness, but in particular to understand old forests in their entirety and complexity over the longer term. This book, comprising both theoretical and methodological contributions along with case studies, reflects the diversity of current approaches and thinking and promotes interdisciplinarity as the only route to a comprehensive understanding of ancient forests as natural and cultural assets. Note de contenu : I- Perception and management of ancient forests as a natural and cultural heritage
II- Investigating forest ancientness: advocating for interdisciplinarity
III- “At the edge of the forest”: other ways to think about ancient and old-growth forests
ConclusionsNuméro de notice : 25938 Affiliation des auteurs : non IGN Thématique : FORET Nature : Monographie DOI : 10.35690/978-2-7592-2907-9 En ligne : https://www.quae-open.com/produit/96/9782759229079/into-the-woods Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96294 Pensez à l'échelle du monde pour maîtriser le temps en France et en Grande-Bretagne, 1870-1914 / Isabelle Avila in Cartes & Géomatique, n° 234 (décembre 2017)
[article]
Titre : Pensez à l'échelle du monde pour maîtriser le temps en France et en Grande-Bretagne, 1870-1914 Type de document : Article/Communication Auteurs : Isabelle Avila, Auteur Année de publication : 2017 Conférence : Colloque international 2016, A l'échelle du monde - La carte : objet culturel, social et politique, du Moyen Âge à nos jours 17/10/2016 18/10/2016 Albi France programme sans actes Article en page(s) : pp 91 - 102 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Cartographie
[Termes IGN] cartographie des flux
[Termes IGN] cartographie thématique
[Termes IGN] dix-neuvième siècle
[Termes IGN] France (géographie historique)
[Termes IGN] Grande-Bretagne
[Termes IGN] monde (géographie historique)
[Termes IGN] monde (géographie politique)
[Termes IGN] mondialisation économique
[Termes IGN] représentation du tempsRésumé : (Auteur) Cet article a pour objectif de chercher les questions cachées derrière le besoin de penser à l'échelle du monde en Grande-Bretagne et en France entre 1870 et 1914. Trois grands axes apparaissent à la lecture de la face invisible des cartes du monde : le panoptique qui articule savoir et pouvoir sur le monde, la modernité d'un monde liquide à cartographier de manière solide et la peur masquée par la confiance de façade en l'avenir derrière les fils enchevêtrés du pouvoir, de l'espace, du temps et des identités. L'homme fait des cartes du monde à la mesure de l'homme pour que l'homme puisse s'élargir à la mesure du monde et habiter pleinement son monde. Numéro de notice : C2016-032 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication nature-HAL : ArtAvecCL-RevueNat DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89548
in Cartes & Géomatique > n° 234 (décembre 2017) . - pp 91 - 102[article]Réservation
Réserver ce documentExemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 021-2017031 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
en open access
Pensez à l'échelle du monde pour maîtriser le temps ... - pdf éditeurAdobe Acrobat PDF Depicting urban boundaries from a mobility network of spatial interactions : a case study of Great Britain with geo-located Twitter data / Junjun Yin in International journal of geographical information science IJGIS, vol 31 n° 7-8 (July - August 2017)
[article]
Titre : Depicting urban boundaries from a mobility network of spatial interactions : a case study of Great Britain with geo-located Twitter data Type de document : Article/Communication Auteurs : Junjun Yin, Auteur ; Aiman Soliman, Auteur ; Dandong Yin, Auteur ; Shaowen Wang, Auteur Année de publication : 2017 Article en page(s) : pp 1293 - 1313 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] comportement
[Termes IGN] données issues des réseaux sociaux
[Termes IGN] données socio-économiques
[Termes IGN] géographie humaine
[Termes IGN] Grande-Bretagne
[Termes IGN] interaction humain-espace
[Termes IGN] limite administrative
[Termes IGN] mobilité urbaine
[Termes IGN] réseau social
[Termes IGN] trace GPS
[Termes IGN] urbanisationRésumé : (Auteur) Existing urban boundaries are usually defined by government agencies for administrative, economic, and political purposes. However, it is not clear whether the boundaries truly reflect human interactions with urban space in intra- and interregional activities. Defining urban boundaries that consider socioeconomic relationships and citizen commute patterns is important for many aspects of urban and regional planning. In this paper, we describe a method to delineate urban boundaries based upon human interactions with physical space inferred from social media. Specifically, we depicted the urban boundaries of Great Britain using a mobility network of Twitter user spatial interactions, which was inferred from over 69 million geo-located tweets. We define the non-administrative anthropographic boundaries in a hierarchical fashion based on different physical movement ranges of users derived from the collective mobility patterns of Twitter users in Great Britain. The results of strongly connected urban regions in the form of communities in the network space yield geographically cohesive, nonoverlapping urban areas, which provide a clear delineation of the non-administrative anthropographic urban boundaries of Great Britain. The method was applied to both national (Great Britain) and municipal scales (the London metropolis). While our results corresponded well with the administrative boundaries, many unexpected and interesting boundaries were identified. Importantly, as the depicted urban boundaries exhibited a strong instance of spatial proximity, we employed a gravity model to understand the distance decay effects in shaping the delineated urban boundaries. The model explains how geographical distances found in the mobility patterns affect the interaction intensity among different non-administrative anthropographic urban areas, which provides new insights into human spatial interactions with urban space. Numéro de notice : A2017-303 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2017.1282615 En ligne : http://dx.doi.org/10.1080/13658816.2017.1282615 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85350
in International journal of geographical information science IJGIS > vol 31 n° 7-8 (July - August 2017) . - pp 1293 - 1313[article]Réservation
Réserver ce documentExemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 079-2017041 RAB Revue Centre de documentation En réserve L003 Disponible 079-2017042 RAB Revue Centre de documentation Revues en salle Disponible A GIS approach to exploring monetary value on enclosure era property-related maps / Christopher Macdonald Hewitt in Cartographic journal (the), Vol 54 n° 2 (May 2017)PermalinkA method for matching crowd-sourced and authoritative geospatial data / Heshan Du in Transactions in GIS, vol 21 n° 2 (April 2017)PermalinkEtude de l'impact d'un projet de développement sur les propriétés avoisinantes / Sylvain Jourdan (2017)PermalinkIncorporating movement in species distribution models: how do simulations of dispersal affect the accuracy and uncertainty of projections? / Paul Holloway in International journal of geographical information science IJGIS, vol 30 n° 9-10 (September - October 2016)PermalinkUAV monitoring of a largescale environmental project / Alan Roberts in GEO: Geoconnexion international, vol 15 n° 5 (May 2016)PermalinkGeo-temporal Twitter demographics / Paul A. Longley in International journal of geographical information science IJGIS, vol 30 n° 1-2 (January - February 2016)PermalinkWide-area mapping of small-scale features in agricultural landscapes using airborne remote sensing / Jerome O’Connell in ISPRS Journal of photogrammetry and remote sensing, vol 109 (November 2015)PermalinkEnvironmental, spatial and temporal drivers of plant community composition in British forest habitat / Adam Robert Kimberley (2015)PermalinkVisualisation of spread of Chalara ash dieback for raising public awareness and responsible woodland access / Chen Wang (2015)PermalinkBecksploitation: the over-use of a cartographic icon / Kenneth Field in Cartographic journal (the), vol 51 n° 4 (November 2014)PermalinkSimulating SAR geometric distortions and predicting Persistent Scatterer densities for ERS-1/2 and ENVISAT C-band SAR and InSAR applications: Nationwide feasibility assessment to monitor the landmass of Great Britain with SAR imagery / Francesca Cigna in Remote sensing of environment, vol 152 (September 2014)PermalinkStudying commuting behaviours using collaborative visual analytics / Roger Beecham in Computers, Environment and Urban Systems, vol 47 (September 2014)PermalinkAdaptive zoning for transport mode choice modeling / Alex Hagen-Zanker in Transactions in GIS, vol 17 n° 5 (October 2013)PermalinkHow reliable are citizen-derived scientific data? Assessing the quality of contrail observations made by the general public / Amy Fowler in Transactions in GIS, vol 17 n° 4 (August 2013)PermalinkL'acceptation de l'élément marin dans la gestion du trait de côte : une nouvelle gouvernance face au risque de submersion ? Les cas du Lincolnshire, de l'Essex (Angleterre), du littoral picard et du bassin d'Arcachon (France) / Vincent Bawedin in Annales de géographie, n° 692 (juillet - août 2013)PermalinkPermalinkPermalinkAssessing data completeness of VGI through an automated matching procedure for linear data / T. Koukoletsos in Transactions in GIS, vol 16 n° 4 (August 2012)PermalinkExploring geomorphometry through user generated content: Comparing an unsupervised geomorphometric classification with terms attached to georeferenced images in Great Britain / C. Gschwend in Transactions in GIS, vol 16 n° 4 (August 2012)PermalinkMapping inequality in London : a different approach / M. Green in Cartographic journal (the), vol 49 n° 3 (August 2012)Permalink