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Auteur A. Jakobsson
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Status of data quality in European national mapping agencies / A. Jakobsson (01/09/2001)
contenu dans Mapping the 21st century: the 20th International Cartographic Conference, ICC 2001, Beijing, China, August 6 - 10, 2001, Volume 5. Proceedings / L. Li (2001)
Titre : Status of data quality in European national mapping agencies Type de document : Article/Communication Auteurs : A. Jakobsson, Auteur ; François Vauglin , Auteur Congrès : Congrès: ICC 2001, 20th International Cartographic Conference ICA Mapping the 21th century (6 - 10 août 2001; Pékin, Chine), Auteur Année de publication : 01/09/2001 Importance : pp 2875 - 2883 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie numérique
[Termes IGN] Europe (géographie politique)
[Termes IGN] information géographique
[Termes IGN] organisme cartographique national
[Termes IGN] qualité
Résumé : (Auteur) EuroGeographics (formerly CERCO) brings together representatives from the European National Mapping Agencies (NMAs). Its mission is to represent Europe's NMAs and coordinate their efforts to develop the European Geographic Information Infrastructure. It has created several working groups for exchanging information and discussing issues relating to geographical information including the Working Group on Quality. This group is considering three subjects : 'Quality management' and 'ISO 9000', 'Data quality issues and Standards'. The Sub-WorkingGroup on Data Quality (SWG) aims to share experiences in methods used to write dataset specifications, measure quality, assess user requirements and evaluate fitness for use.
The SWG used product life cycle as a basis for further study of other issues relating data quality and to prepare a questionnaire based on diffèrent steps in the product life cycle.
The questionnaire on data quality was prepared in 1999 and received answers from 18 countries, including the USA. This paper is based on the results of the questionnaire.
The questionnaire covered a total of 226 datasets. All NMAs produce topographic datasets and about half also produce cadastral datasets. The questionnaire also covered other datasets produced by the NMAs. The reasons for producing the datasets was divided between legal obligations and market reasons. The user requirements were identified mainly through customer interviews.
The specifications and production of the datasets are discussed. Generally, datasets have a product specification, but there is a clear need for standardization. Graphical maps are still considered to be the main source of datasets. NMAs have defined general criteria for quality of datasets, but detailed criteria will be used in the future. Subcontracting the production appears to be quite common. Nearly 75% of the NMAs subcontract part of their production. Surprisingly, cost is not the major reason cited, but rather the acceleration of production.
Finally, quality evaluation procedures and data quality issues are discussed. The NMAs recognize the geographic standards are being developed, but evidently some education is needed to evaluate quality. Some quality elements and elements are not well known. Assuring customer of data quality appears to be a major issue. However, quality results are not forwarded to customers, which implies that evaluation procedures are not functioning properly. Current attitudes on quality and the need for proper quality specification indicate the possibility that remaining issues will be solved in the future.
Numéro de notice : C2001-014 Affiliation des auteurs : IGN (1940-2011) Thématique : GEOMATIQUE Nature : Communication Permalink :