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The Impact of Contributor Confidence, Expertise and Distance on the Crowdsourced Land Cover Data Quality

机译:贡献者信心,专业知识和众包覆盖数据质量的影响

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There is much interest in the opportunities for formal scientific investigations afforded by crowdsourcing and citizen sensing activities. However, one of the critical research issues relates to the 'quality' of the data collected in this way. This paper uses volunteer data on land cover collected under the Geo-Wiki system, where contributors label the land cover class at a series of locations, with expert labels at the same locations. It examines the statistical relationships between the accuracy of volunteer labels, their self assessed confidence in labelling, their 'experiential distance' to the location under consideration and the level of their domain expertise. The results show that distance has a minor effect on the reliability of land cover labelling, and that generally expertise has a greater effect, but not for all land cover classes.
机译:对众包和公民传感活动提供的正式科学调查的机会有很多兴趣。 然而,其中一个关键的研究问题涉及以这种方式收集的数据的“质量”。 本文在Geo-Wiki系统下收集的陆地上使用志愿者数据,其中贡献者在一系列地点标记土地覆盖类,在同一地点的专家标签。 它探讨了志愿者标签的准确性之间的统计关系,他们对标签的自我评估信心,他们对所考虑的位置和域名专业知识的水平的“体验距离”。 结果表明,距离对土地覆盖标签的可靠性产生了轻微影响,并且通常专业知识具有更大的效果,但不适用于所有土地覆盖课程。

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