A quadtree approach based on European geographic grids : reconciling data privacy and accuracy
Lagonigro, Raymond (Universitat de Vic. Departament d'Economia i Empresa)
Oller Piqué, Ramon (Universitat de Vic. Departament d'Economia i Empresa)
Martori, Joan Carles (Universitat de Vic. Departament d'Economia i Empresa)

Date:	2017
Abstract:	Methods to preserve confidentiality when publishing geographic information conflict with the need to publish accurate data. The goal of this paper is to create a European geographic grid frame- work to disseminate statistical data over maps. We propose a methodology based on quadtree hierarchical geographic data structures. We create a varying size grid adapted to local area densities. High populated zones are disaggregated in small squares to allow dissemination of accurate data. Alternatively, information on low populated zones is published in big squares to avoid identification of individual data. The methodology has been applied to the 2014 population register data in Catalonia.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Official statistics ; Confidentiality ; Disclosure limitation ; Dissemination ; Geographic information systems ; Hierarchical data structures ; Small area geography
Published in:	SORT : statistics and operations research transactions, Vol. 41 Núm. 1 (January-June 2017) , p. 139-158 (Articles) , ISSN 2013-8830

Adreça alternativa: https://raco.cat/index.php/SORT/article/view/326053
DOI: 10.2436/20.8080.02.55

20 p, 3.5 MB

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