期刊名称：GI_FORUM - Journal for Geographic Information Science
电子版ISSN：2308-1708
出版年度：2014
页码：309-313
DOI：10.1553/giscience2014s309
出版社：ÖAW Verlag, Wien
摘要：There is much interest in the opportunities for formal scientific investigations afforded bycrowdsourcing and citizen sensing activities. However, one of the critical research issuesrelates to the ‘quality’ of the data collected in this way. This paper uses volunteer data onland cover collected under the Geo-Wiki system, where contributors label the land coverclass at a series of locations, with expert labels at the same locations. It examines thestatistical relationships between the accuracy of volunteer labels, their self assessedconfidence in labelling, their ‘experiential distance’ to the location under consideration andthe level of their domain expertise. The results show that distance has a minor effect on thereliability of land cover labelling, and that generally expertise has a greater effect, but notfor all land cover classes.
