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Automatic revision of the control knowledge used by trial and error methods: Application to cartographic generalisation / Patrick Taillandier in Applied soft computing, vol 11 n° 2 (March 2011)
[article]
Titre : Automatic revision of the control knowledge used by trial and error methods: Application to cartographic generalisation Type de document : Article/Communication Auteurs : Patrick Taillandier , Auteur ; Cécile Duchêne , Auteur ; Alexis Drogoul, Auteur Année de publication : 2011 Article en page(s) : pp 2818 - 2832 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] connaissance thématique
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] instance
[Termes IGN] méthode heuristique
[Vedettes matières IGN] GénéralisationMots-clés libres : Knowledge revision Problem solving Trial and error method Cartographic generalisation Résumé : (auteur) Humans frequently have to face complex problems. A classical approach to solve them is to search the solution by means of a trial and error method. This approach is often used with success by artificial systems. However, when facing highly complex problems, it becomes necessary to introduce control knowledge (heuristics) in order to limit the number of trials needed to find the optimal solution. Unfortunately, acquiring and maintaining such knowledge can be fastidious. In this paper, we propose an automatic knowledge revision approach for systems based on a trial and error method. Our approach allows to revise the knowledge off-line by means of experiments. It is based on the analysis of solved instances of the considered problem and on the exploration of the knowledge space. Indeed, we formulate the revision problem as a search problem: we search the knowledge set that maximises the performances of the system on a sample of problem instances. Our knowledge revision approach has been implemented for a real-world industrial application: automated cartographic generalisation, a complex task of the cartography domain. In this implementation, we demonstrate that our approach improves the quality of the knowledge and thus the performance of the system. Numéro de notice : A2011-581 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.asoc.2010.11.012 Date de publication en ligne : 27/11/2010 En ligne : http://dx.doi.org/10.1016/j.asoc.2010.11.012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83482
in Applied soft computing > vol 11 n° 2 (March 2011) . - pp 2818 - 2832[article]An evaluation of the impact of cartographic generalisation on length measurement computed from linear vector databases / Jean-François Girres (2011)
Titre : An evaluation of the impact of cartographic generalisation on length measurement computed from linear vector databases Type de document : Article/Communication Auteurs : Jean-François Girres , Auteur Editeur : International Cartographic Association ICA - Association cartographique internationale ACI Année de publication : 2011 Projets : 1-Pas de projet / Conférence : ICC 2011, 25th International Cartographic Conference and 15th ICA General Assembly 03/07/2011 08/07/2011 Paris France OA Proceedings Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] base de données vectorielles
[Termes IGN] évaluation des données
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] impact sur les données
[Termes IGN] imprécision géométrique
[Termes IGN] longueur
[Termes IGN] objet géographique linéaire
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) [introduction] To be able to estimate length and area accuracy, all the possible sources of geometric uncertainty need to be modeled. Indeed, different causes in the production and representation processes of vector objects impact measurements. In term of representation processes, we know that measurements can be impacted by: - the projection system used; - not taking account of the terrain, involving an under-estimation of lengths and areas. For the production processes, measurements are also impacted by: - the digitizing precision of the operator, usually involved by the scale of capture; - the precision of the sensor, if the database is produced using a GPS; - the polygonal approximation of curves, when objects represented are curved; - effects of cartographic generalization, if the database is captured from maps. If a final user wants to assess the measurement imprecision of its database, he has to take into account all these potential sources of error. To fit with this requirement, our research aims at developing a general model which takes into account all the sources exposed above, and to quantify their respective impact, in order to provide information on measurement imprecision. The expression of digitizing error, and polygonal approximation has already been presented in (Girres and Julien, 2010) and the general model in (Girres and Ruas, 2010). In order to complete the expression of production processes impact on measurements, a study of cartographic generalization effects has to be conducted. In this context, this paper proposes a method to evaluate the effect of cartographic generalization on length measurement, focusing on road networks. The general methodology, as far as the different steps of the evaluation, is presented afterwards. Numéro de notice : C2011-040 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE/INFORMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://icaci.org/files/documents/ICC_proceedings/ICC2011/Oral%20Presentations%2 [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64317 CollaGen : Collaboration between automatic cartographic generalisation processes / Guillaume Touya (2011)
contenu dans Advances in cartography and GIScience: selection from ICC [International Cartographic Conference] 2011, Volume 1. Conference proceedings / Anne Ruas (2011)
Titre : CollaGen : Collaboration between automatic cartographic generalisation processes Type de document : Article/Communication Auteurs : Guillaume Touya , Auteur ; Cécile Duchêne , Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2011 Collection : Lecture notes in Geoinformation and Cartography, ISSN 1863-2246 Conférence : ICC 2011, 25th International Cartographic Conference and 15th ICA General Assembly 03/07/2011 08/07/2011 Paris France OA Proceedings Importance : pp 541 - 558 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] CollaGen (généralisation collaborative)
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] partition des données
[Vedettes matières IGN] GénéralisationRésumé : (Auteur) Cartographic generalisation seeks to summarise geographical information to produce legible maps at smaller scales. Past research led to the develop-ment of many automated cartographic generalisation processes, each one being more or less specialised to a particular problem: a landscape like urban areas, a data theme like land use, a cartographic conflict like linear symbol overlap or most of the time of mix of the three. This paper deals with the development of a model allowing collaborative generalisation i.e. the collaboration between automatic processes like these in order to tackle the generalisation of a complete map. CollaGen, our proposed model, allows to partition data in geographic spaces and to find to best suited process to generalise each space. The applications of a process on a space are automatically orchestrated. Interoperability between processes is managed thanks to formal constraints and side effects are monitored after each pro-cess application. Results from CollaGen prototype are shown and discussed. Numéro de notice : C2011-004 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-642-19143-5_30 Date de publication en ligne : 09/04/2011 En ligne : http://dx.doi.org/10.1007/978-3-642-19143-5_30 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65075 Generalisation, symbol specification and map evaluation: feedback from research done at COGIT laboratory, IGN France / Cécile Duchêne in International Journal of Digital Earth, Volume 4, 2011 - Issue sup1 (2011)
[article]
Titre : Generalisation, symbol specification and map evaluation: feedback from research done at COGIT laboratory, IGN France Type de document : Article/Communication Auteurs : Cécile Duchêne , Auteur ; Sidonie Christophe , Auteur ; Anne Ruas , Auteur Année de publication : 2011 Projets : 1-Pas de projet / Article en page(s) : pp 25 - 41 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] Conception Objet et Généralisation de l'Information Topographique = Cartographie et Géomatique
[Termes IGN] généralisation cartographique automatisée
[Termes IGN] gestion de crise
[Termes IGN] sémiologie graphique
[Termes IGN] spécification
[Vedettes matières IGN] GénéralisationRésumé : (auteur) This paper presents an overview of research studies made at the COGIT laboratory of IGN France in the fields of generalisation and symbol specification, particularly considering evaluation aspects. It then discusses how generalisation and symbol specification interact. Finally it explores some possible adaptations of the presented works in generalisation and symbol specification to cartography in the context of crisis management. Numéro de notice : A2011-579 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/17538947.2010.510305 Date de publication en ligne : 02/11/2011 En ligne : http://dx.doi.org/10.1080/17538947.2010.510305 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83478
in International Journal of Digital Earth > Volume 4, 2011 - Issue sup1 (2011) . - pp 25 - 41[article]Map generalisation / Jan‐Henrik Haunert in GIM international, vol 25 n° 1 (January 2011)
[article]
Titre : Map generalisation Type de document : Article/Communication Auteurs : Jan‐Henrik Haunert, Auteur Année de publication : 2011 Article en page(s) : pp 31 - 33 Langues : Anglais (eng) Descripteur : [Termes IGN] généralisation cartographique automatisée
[Termes IGN] optimisation (mathématiques)
[Termes IGN] point d'appui
[Vedettes matières IGN] GénéralisationRésumé : (Editeur) Decades of research on map generalization have resulted in an abundance of heuristic algorithms, evaluation of the performance of which is vital for choosing the most suitable for a certain application. Proper evaluation methods are, however, missing. The author proposes an approach based on optimization methods adopted from the field of operation research. Numéro de notice : A2011-005 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30787
in GIM international > vol 25 n° 1 (January 2011) . - pp 31 - 33[article]PermalinkUn système multi-agent pour l'orchestration de processus de généralisation cartographique / Guillaume Touya (2011)PermalinkToward the generalisation of cartographic mashups: Taking into account the dependency between the thematic data and the reference data throughout the process of automatic generalisation / Kusay Jaara (2011)PermalinkPermalinkArea aggregation in map generalisation by mixed-integer programming / Jan‐Henrik Haunert in International journal of geographical information science IJGIS, vol 24 n°11-12 (december 2010)PermalinkModeling the scale dependences of topological relations between lines and regions induced by reduction of attributes / S. Du in International journal of geographical information science IJGIS, vol 24 n°11-12 (december 2010)PermalinkDu manuel au numérique pour la cartographie aux moyennes échelles : L'exemple des cartes au 1/100 000 en France / François Lecordix in Bulletin des sciences géographiques, n° 25 (juin 2010)PermalinkAn evaluation of measures for quantifying map information / Lars Harrie in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 3 (May - June 2010)PermalinkTriangulation method for area-line geometry-type changes in map generalisation / H. Selvi in Cartographic journal (the), vol 47 n° 2 (May 2010)PermalinkVisualisation of origins, destinations and flows with OD maps / J. Wood in Cartographic journal (the), vol 47 n° 2 (May 2010)Permalink