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Carto-Som: Cartogram creation using self-organizing maps / R. Henriques in International journal of geographical information science IJGIS, vol 23 n°3-4 (march - april 2009)
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Titre : Carto-Som: Cartogram creation using self-organizing maps Type de document : Article/Communication Auteurs : R. Henriques, Auteur ; Fernando Bacao, Auteur ; V. Lobo, Auteur Année de publication : 2009 Article en page(s) : pp 483 - 511 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie
[Termes IGN] carte de Kohonen
[Termes IGN] cartogramme
[Termes IGN] classification par réseau neuronal
[Termes IGN] représentation cartographiqueRésumé : (Auteur) The basic idea of a cartogram is to distort a geographical map by substituting the geographic area of a region by some other variable of interest. The objective is to rescale each region according to the value of the variable of interest while keeping the map, as much as possible, recognizable. There are several algorithms for building cartograms. None of these methods has proved to be universally better than any other, since the trade-offs made to get the correct distortion vary. In this paper we present a new method for building cartograms, based on self-organizing neural networks (Kohonen's self-organizing maps or SOM). The proposed method is widely available and is easy to carry out, and yet has several appealing properties, such as easy parallelization, making up a good tool for geographic data presentation and analysis. We present a series of tests on different problems, comparing the new algorithm with existing ones. We conclude that it is competitive and, in some circumstances, can perform better then existing algorithms. Copyright Taylor & Francis Numéro de notice : A2009-160 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810801958885 En ligne : https://doi.org/10.1080/13658810801958885 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29790
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