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. 2020 Jul 20;7:242. doi: 10.1038/s41597-020-00580-5

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — Quantitative accuracy assessment of the WSF2015 and comparison against the currently most largely employed global settlement extent layers. Quality assessment figures computed over the 900,000 collected reference samples for the WSF2015, GUF, GHSL and GLC30. Results are concurrently reported for all three settlement definitions and four assessment criteria considered in terms of percent average accuracy (AA%), Kappa coefficient, as well as percent producer’s (PA%) and user’s (UA%) accuracies for both the settlement (S) and non-settlement (NS) classes.