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Characteristics of Heavily Edited Objects in OpenStreetMap
Department of Computer Science, National University of Ireland, Maynooth, Ireland
School of Computer Science and Informatics, University College Dublin, Dublin, Ireland
* Author to whom correspondence should be addressed.
Received: 30 January 2012; in revised form: 7 March 2012 / Accepted: 16 March 2012 / Published: 20 March 2012
Abstract: This paper describes the results of an analysis of the OpenStreetMap (OSM) database for the United Kingdom (UK) and Ireland (correct to April 2011). 15; 640 OSM ways (polygons and polylines), resulting in 316; 949 unique versions of these objects, were extracted and analysed from the OSM database for the UK and Ireland. In our analysis we only considered “heavily edited” objects in OSM: objects which have been edited 15 or more times. Our results show that there is no strong relationship between increasing numbers of contributors to a given object and the number of tags (metadata) assigned to it. 87% of contributions/edits to these objects are performed by 11% of the total 4128 contributors. In 79% of edits additional spatial data (nodes) are added to objects. The results in this paper do not attempt to evaluate the OSM data as good/poor quality but rather informs potential consumers of OSM data that the data itself is changing over time. In developing a better understanding of the characteristics of “heavily edited” objects there may be opportunities to use historical analysis in working towards quality indicators for OSM in the future.
Keywords: OpenStreetMap; collaborative editing; volunteered geographic information; spatial data
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MDPI and ACS Style
Mooney, P.; Corcoran, P. Characteristics of Heavily Edited Objects in OpenStreetMap. Future Internet 2012, 4, 285-305.
Mooney P, Corcoran P. Characteristics of Heavily Edited Objects in OpenStreetMap. Future Internet. 2012; 4(1):285-305.
Mooney, Peter; Corcoran, Padraig. 2012. "Characteristics of Heavily Edited Objects in OpenStreetMap." Future Internet 4, no. 1: 285-305.