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Sylvie Servigne, Thierry Ubeda, Alain Puricelli, Robert Laurini
2012 Geoinformatica  
In any information system the reliability of any results of queries, analysis or reasoning, depends on data quality ( positional accuracy, consistency and so on). In some cases, answers cannot be obtained due to a lack of information, whereas in other cases answers are wrong or not complete because of inconsistent data. In geographical information systems (GIS), data quality management has to handle the spatial features of objects, which brings speci®c problems. The goal of this paper is to
more » ... ribe a methodology for spatial consistency improvement of geographical data sets in vector format. It is based on errors survey and classi®cation. Three kinds of errors are identi®ed which lead to three kinds of consistency, namely structural consistency, geometric consistency and topo-semantic consistency. Each of them needs speci®c checking and correcting processes. All these processes are integrated in a general framework that is presented in this paper. An application of this framework to the Lyon Urban Community GIS (the SUR) is currently conducted; ®rst results are presented. * the structural level (data structures), * the geometric level (conceptual model), * the topo-semantic level (objects meaning according to topological relations).
doi:10.1023/a:1009824308542 fatcat:glekknogf5b7tbep2v4ufsj6ce