Data and code for the paper "Validity Assessment of POI Data: Considering dynamic changes"
<p dir="ltr">Point of Interest (POI) data is a critical source in urban geography for uncovering city structure and reflecting patterns of urban activity. Assessing and enhancing the effectiveness of POI data is fundamental. However, most current methods for evaluating POI validity r...
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2024
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| Summary: | <p dir="ltr">Point of Interest (POI) data is a critical source in urban geography for uncovering city structure and reflecting patterns of urban activity. Assessing and enhancing the effectiveness of POI data is fundamental. However, most current methods for evaluating POI validity rely on census data and overlook the dynamic nature of POIs, which greatly limits the effectiveness of evaluation methods and the accuracy of their results. This paper proposes a new approach to assess POI validity by leveraging the dynamic changes of POIs. To find changed POIs without relying on census data, the approach selected a sample of POIs, assumed to approximate the characteristics of the overall set, and conducted field research to track their dynamic changes and calculate their validity. Then the validity of the sample POIs is used to approximate the overall validity. The results of POI data validity assessment in Changzhou, China, show that considering dynamic changes increases the validity of POI data. The new sampling-based approach for collecting dynamic changes in POI, as well as insights on sampling priorities for collecting dynamic changes, not only overcome the limitations of existing research concerning reference data and research costs, but open a new direction for POI data validity studies.</p> |
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