THEMATIC ACCURACY AND COMPLETENESS ASSESSMENT OF SPATIAL DATASETS

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-12-4 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 3, 1009-1016 pp

ABSTRACT
The paper aims to present the main issues related to the thematic accuracy and completeness assessment for a spatial database. The accuracy evaluation has based on the data quality elements and subelements, according with ISO 19113 Geographic Information-Quality principles and ISO 19114 Geographic Information-Quality evaluation procedures. There was identified an interaction between the omission (polygon is missing), temporal accuracy (changes in land use, re-allot) and classification correctness (errors in interpretation). The classification correctness as a subelement of thematic accuracy was checked by using the error matrix. When data quality elements and subelements are interacting and overlapping, there will be some difficulties and limitations in the evaluation of the data quality and consequently and the results of data quality measure will be influenced.

Keywords: thematic accuracy, error matrix, completeness, GIS, ISO