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An active crawler for discovering geospatial Web services and their distribution pattern : A case study of OGC Web Map Service / W. Li in International journal of geographical information science IJGIS, vol 24 n°7-8 (july 2010)
[article]
Titre : An active crawler for discovering geospatial Web services and their distribution pattern : A case study of OGC Web Map Service Type de document : Article/Communication Auteurs : W. Li, Auteur ; C. Yang, Auteur Année de publication : 2010 Article en page(s) : pp 1127 - 1147 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] service web géographique
[Termes IGN] Web Map ServiceRésumé : (Auteur) The increased popularity of standards for geospatial interoperability has led to an increasing number of geospatial Web services (GWSs), such as Web Map Services (WMSs), becoming publicly available on the Internet. However, finding the services in a quick and precise fashion is still a challenge. Traditional methods collect the services through centralized registries, where services can be manually registered. But the metadata of the registered services cannot be updated timely. This paper addresses the above challenges by developing an effective crawler to discover and update the services in (1) proposing an accumulated term frequency (ATF)-based conditional probability model for prioritized crawling, (2) utilizing concurrent multi-threading technique, and (3) adopting an automatic mechanism to update the metadata of identified services. Experiments show that the proposed crawler achieves good performance in both crawling efficiency and results' coverage/liveliness. In addition, an interesting finding regarding the distribution pattern of WMSs is discussed. We expect this research to contribute to automatic GWS discovery over the large-scale and dynamic World Wide Web and the promotion of operational interoperable distributed geospatial services. Numéro de notice : A2010-323 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810903514172 En ligne : https://doi.org/10.1080/13658810903514172 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30517
in International journal of geographical information science IJGIS > vol 24 n°7-8 (july 2010) . - pp 1127 - 1147[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2010041 RAB Revue Centre de documentation En réserve L003 Disponible 079-2010042 RAB Revue Centre de documentation En réserve L003 Disponible Comparative evaluation and analysis of online geocoding services / D. Roongpiboonsopit in International journal of geographical information science IJGIS, vol 24 n°7-8 (july 2010)
[article]
Titre : Comparative evaluation and analysis of online geocoding services Type de document : Article/Communication Auteurs : D. Roongpiboonsopit, Auteur ; Hassan A. Karimi, Auteur Année de publication : 2010 Article en page(s) : pp 1081 - 1100 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] analyse comparative
[Termes IGN] géocodage
[Termes IGN] géomatique web
[Termes IGN] qualité de service
[Termes IGN] service fondé sur la position
[Termes IGN] WebSIGRésumé : (Auteur) Geocoding is an uncertain process that associates an address or a place name with geographic coordinates. Traditionally, geocoding is performed locally on a stand-alone computer with the geocoding tools usually bundled in GIS software packages. The use of such tools requires skillful operators who know about the issues of geocoding, that is, reference databases and complicated geocoding interpolation techniques. These days, with the advancement in the Internet and Web services technologies, online geocoding provides its functionality to the Internet users with ease; thus, they are often unaware of such issues. With an increasing number of online geocoding services, which differ in their reference databases, the geocoding algorithms, and the strategy for dealing with inputs and outputs, it is crucial for the service requestors to realize the quality of the geocoded results of each service before choosing one for their applications. This is primarily because any errors associated with the geocoded addresses will be propagated to subsequent decisions, activities, modeling, and analysis. This article examines the quality of five online geocoding services: Geocoder.us, Google, MapPoint, MapQuest, and Yahoo!. The quality of each geocoding service is evaluated with three metrics: match rate, positional accuracy, and similarity. A set of addresses from the US Environmental Protection Agency (EPA) database were used as a baseline. The results were statistically analyzed with respect to different location characteristics. The outcome of this study reveals the differences among the online geocoding services on the quality of their geocoding results and it can be used as a general guideline for selecting a suitable service that matches an application's needs. Numéro de notice : A2010-321 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810903289478 En ligne : https://doi.org/10.1080/13658810903289478 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30515
in International journal of geographical information science IJGIS > vol 24 n°7-8 (july 2010) . - pp 1081 - 1100[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2010041 RAB Revue Centre de documentation En réserve L003 Disponible 079-2010042 RAB Revue Centre de documentation En réserve L003 Disponible Virtual globes: state of the art and critical issues / Stephan Nebiker in GIM international, vol 24 n° 7 (July 2010)
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Titre : Virtual globes: state of the art and critical issues Type de document : Article/Communication Auteurs : Stephan Nebiker, Auteur ; S. Bleisch, Auteur ; Eberhard Gülch, Auteur Année de publication : 2010 Article en page(s) : 3 p. ; pp 17 - 21 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] état de l'art
[Termes IGN] géomatique web
[Termes IGN] globe virtuelRésumé : (Auteur) Virtual Globes (VGs) such as Google Earth or Microsoft Bing Maps 3D have in their few years' existence received enormous attention from both mass media and the geospatial community itself. VGs have raised public awareness of geospatial data and applications like no other technology before them. However, this has also tairthed the question of whether they are just hype or offer substantial and long-term business opportunities for providers of geospatial data, technology and services. The authors look at this within the framework of a EuroSDR project. Numéro de notice : A2010-283 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30477
in GIM international > vol 24 n° 7 (July 2010) . - 3 p. ; pp 17 - 21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 061-2010071 RAB Revue Centre de documentation Revues en salle Disponible OGC 3D standards candidate / Alexander Zipf in GEO: Geoconnexion international, vol 9 n° 6 (june 2010)
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Titre : OGC 3D standards candidate Type de document : Article/Communication Auteurs : Alexander Zipf, Auteur Année de publication : 2010 Article en page(s) : pp 28 - 29 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] 3D symbology encoding
[Termes IGN] Open geospatial consortium
[Termes IGN] standard OGC
[Termes IGN] Web 3D Service
[Termes IGN] Web View ServiceRésumé : (Editeur) [introduction] The Open Geospatial Consortium (OGC) has published three new candidate standards which are related to the 3D GeoWeb as public discussion papers (DP) on its website. These are: a revised version of the Web 3D Service (W3DS), the Web View Service (WVS), an extension profile of the Symbology Encoding Specification for 3D (SE 3D) has been added that can be used with the both services. These establish a new family of 3D portrayal services focusing on virtual 3D maps, interactive virtual environments, and 3D cartographic visualization. Numéro de notice : A2010-198 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30392
in GEO: Geoconnexion international > vol 9 n° 6 (june 2010) . - pp 28 - 29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 062-2010061 SL Revue Centre de documentation Revues en salle Disponible SDI standards and competitiveness / Steven Ramage in GEO: Geoconnexion international, vol 9 n° 6 (june 2010)
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Titre : SDI standards and competitiveness Type de document : Article/Communication Auteurs : Steven Ramage, Auteur Année de publication : 2010 Article en page(s) : pp 24 - 26 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] compétitivité
[Termes IGN] infrastructure mondiale des données localisées
[Termes IGN] Open geospatial consortium
[Termes IGN] standard
[Termes IGN] standard OGCRésumé : (Editeur) In this article, OGC's Steven Ramage looks at how government policies toward geoprocessing standards can promote the health of national and regional economies. Numéro de notice : A2010-197 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30391
in GEO: Geoconnexion international > vol 9 n° 6 (june 2010) . - pp 24 - 26[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 062-2010061 SL Revue Centre de documentation Revues en salle Disponible Ten years of technology advancement in remote sensing and the research in the CRC-AGIP in GCE / Y. Zhang in Geomatica, vol 64 n° 2 (June 2010)PermalinkThe potential and early limitations of volunteered geographic information / David Coleman in Geomatica, vol 64 n° 2 (June 2010)PermalinkAnalytical 3D views and virtual globes: scientific results in a familiar spatial context / D. Tiede in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 3 (May - June 2010)PermalinkThe development of an integrated technical-methodical approach to visualise hydrological processes in an exemplary post-mining area in Central Germany / C. Glässer in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 3 (May - June 2010)PermalinkUn point de vue sur la qualité des données collaboratives : cas d'OpenStreetMap / Serge Mang in Signature, n° 42 (avril 2010)PermalinkRiskCity and WebRiskCity: Data collection, display, and dissemination in a multi-risk training package / S. Frigerio in Cartography and Geographic Information Science, vol 37 n° 2 (April 2010)PermalinkSemantic enablement for Spatial Data Infrastructures / Krzysztof Janowicz in Transactions in GIS, vol 14 n° 2 (April 2010)PermalinkPermalinkThe space package : tight integration between space and semantics / W. Van Hage in Transactions in GIS, vol 14 n° 2 (April 2010)PermalinkComment les "pros" s'intéressent aux globes virtuels grand public ? / Françoise de Blomac in SIG la lettre, n° 115 (mars 2010)Permalink