A quadtree approach based on European geographic grids: reconciling data privacy and accuracy
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 ge...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | UVic-UCC |
| Repositorio: | RiUVic. Repositori institucional de la UVic-UCC |
| OAI Identifier: | oai:dspace.uvic.cat:10854/5294 |
| Acceso en línea: | http://hdl.handle.net/10854/5294 https://doi.org/10.2436/20.8080.02.55 |
| Access Level: | acceso abierto |
| Palabra clave: | Sistemes d'informació geogràfica Estadística |
| Sumario: | 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 densi- ties. 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 iden- tification of individual data. The methodology has been applied to the 2014 population register data in Catalonia. |
|---|