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Regional variations of context‐based association rules in OpenStreetMap

Ludwig, Christina
Fendrich, Sascha
Zipf, Alexander
DOI: https://doi.org/10.1111/tgis.12694
Ludwig, Christina; Fendrich, Sascha; Zipf, Alexander, 2020: Regional variations of context‐based association rules in OpenStreetMap. In: Transactions in GIS, DOI 10.1111/tgis.12694.
 
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  • Abstract
Abstract As a user‐generated map of the whole world, OpenStreetMap (OSM) provides valuable information about the natural and built environment. However, the spatial heterogeneity of the data due to cultural differences and the spatially varying mapping process makes the extraction of reliable information difficult. This study investigates the variability of association rules extracted from OSM across different geographic regions and depending on different context variables, such as the number of OSM mappers. The focus of this study is the spatial co‐occurrence of OSM tags mapped inside of parks within eight different cities. Without considering any context variable, most association rules were very region‐specific without any rule being valid across all cities. Limiting the association rule analysis to parks based on specific context variables increased the number of rules which are applicable across multiple cities. Furthermore, additional region‐specific association rules emerged. The most important context variables were found to be the number of features mapped inside the park, the number of tags and the park size. These results suggest that the mapping process has a significant influence on the emergence of association rules within user‐generated data. Therefore, this subject needs further investigation to enable effective usage of OSM data across different cultural realms.
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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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