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analyzing the contributor activity of a volunteered geographic information project — the case of openstreetmap分析自愿地理信息项目的贡献者活动u2014u2014openstreetmap的情况
ISPRS Int. J. Geo-Inf. 2012, 1, 146-165; doi:10.3390/ijgi1020146
OPEN ACCESS
ISPRS International
Journal of
Geo-Information
ISSN 2220-9964
/journal/ijgi/
Article
Analyzing the Contributor Activity of a Volunteered
Geographic Information Project — The Case of OpenStreetMap
Pascal Neis * and Alexander Zipf
Geoinformatics Research Group, Department of Geography, University of Heidelberg,
Berliner Street 48, D-69120 Heidelberg, Germany; E-Mail: zipf@uni-heidelberg.de
* Author to whom correspondence should be addressed; E-Mail: neis@uni-heidelberg.de;
Tel.: +49-6221-545-504; Fax: +49-6221-544-529.
Received: 13 June 2012; in revised form: 17 July 2012 / Accepted: 17 July 2012 /
Published: 2 7 July 2012
Abstract: The OpenStreetMap (OSM) project, founded in 2004, has gathered an
exceptional amount of interest in recent years and counts as one of the most impressive
sources of Volunteered Geographic Information (VGI) on the Internet. In total, more than
half a million members had registered for the project by the end of 2011. However, while
this number of contributors seems impressive, questions remain about the individual
contributions that have been made by the project members. This research article contains
several studies regarding the contributions by the community of the
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