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Citizen empowered mapping / Michael Leitner (2017)  

Public Titre : Citizen empowered mapping Type de document : Monographie Auteurs : Michael Leitner, Éditeur scientifique ; Jamal Jokar Arsanjani, Éditeur scientifique Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2017 Collection : Geotechnologies and the Environment, ISSN 2365-0575 num. 18 Importance : 300 p. ISBN/ISSN/EAN : 978-3-319-51629-5 Langues : Anglais (eng) Numéro de notice : 22747 Affiliation des auteurs : non IGN Nature : Recueil / ouvrage collectif En ligne : http://dx.doi.org/10.1007/978-3-319-51629-5 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86169

Contient

• Citizen empowered mapping, ch. 1. Level of details harmonization operations in OpenStreetMap based large scale maps / Guillaume Touya (2017)  
• Citizen empowered mapping, ch. 2. Cartographic representation of soundscape: proposals and assessment / Saul Gomez (2017)  

Adaptive areal elimination (AAE): A transparent way of disclosing protected spatial datasets / Ourania Kounadi in Computers, Environment and Urban Systems, vol 57 (May 2016)  

Public [article]  inComputers, Environment and Urban Systems > vol 57 (May 2016) . - pp 59 - 67 Titre : Adaptive areal elimination (AAE): A transparent way of disclosing protected spatial datasets Type de document : Article/Communication Auteurs : Ourania Kounadi, Auteur ; Michael Leitner, Auteur Année de publication : 2016 Article en page(s) : pp 59 - 67 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] anonymisation [Termes IGN] confidentialité [Termes IGN] données localisées [Termes IGN] erreur géométrique [Termes IGN] infraction [Termes IGN] protection de la vie privée Résumé : (auteur) Geographical masking is the conventional solution to protect the privacy of individuals involved in confidential spatial point datasets. The masking process displaces confidential locations to protect individual privacy while maintaining a fine level of spatial resolution. The adaptive form of this process aims to further minimize the displacement error by taking into account the underlying population density. We describe an alternative adaptive geomasking method, referred to as Adaptive Areal Elimination (AAE). AAE creates areas of a minimum K-anonymity and then original points are either randomly perturbed within the areas or aggregated to the median centers of the areas. In addition to the masked points, K-anonymized areas can be safely disclosed as well without increasing the risk of re-identification. Using a burglary dataset from Vienna, AAE is compared with an existing adaptive geographical mask, the donut mask. The masking methods are evaluated for preserving a predefined K-anonymity and the spatial characteristics of the original points. The spatial characteristics are assessed with four measures of spatial error: displaced distance, correlation coefficient of density surfaces, hotspots' divergence, and clusters' specificity. Masked points from point aggregation of AAE have the highest spatial error in all the measures but the displaced distance. In contrast, masked points from the donut mask are displaced the least, preserve the original spatial clusters better, have the highest clusters' specificity and correlation coefficient of density surfaces. However, when the donut mask is adapted to achieve an actual K-anonymity, the random perturbation of AAE introduces less spatial error than the donut mask for all the measures of spatial error. Numéro de notice : A2016-394 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.compenvurbsys.2016.01.004 Date de publication en ligne : 04/02/2016 En ligne : http://dx.doi.org/10.1016/j.compenvurbsys.2016.01.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81213 [article]

Spatial information divergence: using global and local indices to compare geographical masks applied to crime data / Ourania Kounad in Transactions in GIS, vol 19 n° 5 (October 2015)  

Public [article]  inTransactions in GIS > vol 19 n° 5 (October 2015) . - pp 737 – 757 Titre : Spatial information divergence: using global and local indices to compare geographical masks applied to crime data Type de document : Article/Communication Auteurs : Ourania Kounad, Auteur ; Michael Leitner, Auteur Année de publication : 2015 Article en page(s) : pp 737 – 757 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] analyse comparative [Termes IGN] cartographie thématique [Termes IGN] criminalité [Termes IGN] information géographique [Termes IGN] masque géographique [Termes IGN] système d'information géographique [Termes IGN] zonage (urbanisme) Résumé : (auteur) Advances in Geographic Information Science (GISc) and the increasing availability of location data have facilitated the dissemination of crime data and the abundance of crime mapping websites. However, data holders acknowledge that when releasing sensitive crime data there is a risk of compromising the victims' privacy. Hence, protection methodologies are primarily applied to the data to ensure that individual privacy is not violated. This article addresses one group of location protection methodologies, namely geographical masks that are applicable for crime data representations. The purpose is to identify which mask is the most appropriate for crime incident visualizations. A global divergence index (GDi) and a local divergence index (LDi) are developed to compare the effects that these masks have on the original crime point pattern. The indices calculate how dissimilar the spatial information of the masked data is from the spatial information of the original data in regards to the information obtained via spatial crime analysis. The results of the analysis show that the variable radius mask and the donut geomask should be primarily used for crime representations as they produce less spatial information divergence of the original crime point pattern than the alternative local random rotation mask and circular mask. Numéro de notice : A2015-685 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12125 En ligne : https://doi.org/10.1111/tgis.12125 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=78330 [article]

Vol 42 n° 2 - April 2015 - Innovative crime modeling and mapping (Bulletin de Cartography and Geographic Information Science) / Michael Leitner  

Public [n° ou bulletin]  est un bulletin de Cartography and Geographic Information Science / Cartography and geographic information society (1999 -)   Titre : Vol 42 n° 2 - April 2015 - Innovative crime modeling and mapping Type de document : Périodique Auteurs : Michael Leitner, Éditeur scientifique ; Marco Helbich, Éditeur scientifique Année de publication : 2015 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web [Termes IGN] analyse spatiale [Termes IGN] logiciel libre [Termes IGN] sécurité [Termes IGN] visualisation cartographique Numéro de notice : 032-201502 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Numéro de périodique En ligne : http://www.tandfonline.com/toc/tcag20/42/2 Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=25234 [n° ou bulletin]

Contient

• UK open source crime data: accuracy and possibilities for research / Lisa Tompson in Cartography and Geographic Information Science, Vol 42 n° 2 (April 2015)  
• The impact of using social media data in crime rate calculations: shifting hot spots and changing spatial patterns / Nick Malleson in Cartography and Geographic Information Science, Vol 42 n° 2 (April 2015)  
• Spatial eigenvector filtering for spatiotemporal crime mapping and spatial crime analysis / Marco Helbich in Cartography and Geographic Information Science, Vol 42 n° 2 (April 2015)  
• Visualization techniques for journey to crime flow data / Andrew Wheeler in Cartography and Geographic Information Science, Vol 42 n° 2 (April 2015)  

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vol 41 n° 3 - June 2014 - Geographic information science: A multi-disciplinary and multi-paradigmatic discipline (Bulletin de Cartography and Geographic Information Science) / Ourania Kounadi  

Public [n° ou bulletin]  est un bulletin de Cartography and Geographic Information Science / Cartography and geographic information society (1999 -)   Titre : vol 41 n° 3 - June 2014 - Geographic information science: A multi-disciplinary and multi-paradigmatic discipline Type de document : Périodique Auteurs : Ourania Kounadi, Auteur ; Mariana Belgiu, Auteur ; Michael Leitner, Auteur Année de publication : 2014 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] analyse spatiale [Termes IGN] géomatique [Termes IGN] système d'information géographique Numéro de notice : 032-201403 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Numéro de périodique En ligne : http://www.tandfonline.com/toc/tcag20/41/3 Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=21856 [n° ou bulletin]

Contient

• A new geospatial overlay method for the analysis and visualization of spatial change patterns using object-oriented data modeling concepts / Dirk Tiede in Cartography and Geographic Information Science, vol 41 n° 3 (June 2014)  
• Web-based 4D visualization of marine geo-data using WebGL / Bernd Resch in Cartography and Geographic Information Science, vol 41 n° 3 (June 2014)  
• The GeoCitizen-approach: community-based spatial planning, an Ecuadorian case study / Karl Atamanstorfer in Cartography and Geographic Information Science, vol 41 n° 3 (June 2014)  

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vol 40 n° 3 - June 2013 - Selected Papers from ICC 2013: International Cartographic conference, Dresden, Germany, 25-30 august 2013 (Bulletin de Cartography and Geographic Information Science) / Michael Leitner  

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Accuracy and privacy aspects in free online reverse geocoding services / Ourania Kounadi in Cartography and Geographic Information Science, vol 40 n° 2 (March 2013)  

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vol 40 n° 2 - March 2013 - Mapping cyberspace and social media (Bulletin de Cartography and Geographic Information Science) / Ming-Hsiang Tsou  

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vol 39 n° 1 - January 2012 (Bulletin de Cartography and Geographic Information Science) / Michael Leitner  

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vol 36 n° 4 - October 2009 - Workshop on geospatial visual analytics, [actes], Parkcity, 23 september 2008 (Bulletin de Cartography and Geographic Information Science) / Cartography and geographic information society  

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vol 36 n° 3 - July 2009 - Workshop on geospatial visual analytics, [actes], Parkcity, 23 september 2008 (Bulletin de Cartography and Geographic Information Science) / Cartography and geographic information society  

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A first step towards a framework for presenting the location of confidential point data on maps: results of an empirical perceptual study / Michael Leitner in International journal of geographical information science IJGIS, vol 20 n° 7 (august 2006)  

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Guidelines for the display of attribute certainty / Michael Leitner in Cartography and Geographic Information Science, vol 27 n° 1 (January 2000)  

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Prototype rules for automated map generalization / Michael Leitner (1993)

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