Address points of landmarks and paratransit services as a credible reference database for geocoding
Address points of landmarks and paratransit services as a credible reference database for geocoding
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DOI：
10.1111/tgis.12716
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发表时间：
2021-03-02
影响因子：
2.4
通讯作者：
Dumedah, Gift
中科院分区：
文献类型：
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作者：
Dumedah, Gift
地址和位置的挑战是全球性的，但撒哈拉以南非洲（SSA）是最差的地理参考，由于移动基础设施和地标，道路布局差，非正规定居点的空间参考。但是，非正式的地理参考被广泛使用，特别是对于辅助运输服务，以及包括学校，医院和市场在内的地标，这些都没有地图。因此，本研究的目的是生成一个参考数据库的地理编码的目的，利用地址点的地标和辅助（trotro）服务。参考数据库是为加纳阿散蒂地区的奥福里克罗姆市建立的，并通过对108个预处理的当地地址进行地理编码加以验证。结果显示，108个地址与参考数据库之间的匹配率为100%，其中10%的匹配是由定性和近似的空间关系确定的。在不对输入地址进行预处理的情况下，匹配率为88%。据认为，以点为基础的地理编码是为撒哈拉以南非洲或缺乏地理参考的地区的地址建立地理编码参考数据库的最切实可行的办法。广泛使用的地标和paratransit的地理参考在SSA提供了潜力，以适应本研究的国家/地区的非正式定居点和穷人的地理参考。
Address and location challenges are global, yet sub-Saharan Africa (SSA) is the most poorly referenced geographically due to poor spatial referencing of mobility infrastructure and landmarks, poor road layout, and informal settlements. But there is a widespread use of informal geographic referencing especially for paratransit service, and landmarks including schools, hospitals, and markets, which are not mapped. Accordingly, the purpose of this study is to generate a reference database for geocoding purposes by taking advantage of address points of landmarks and paratransit (trotro) services. The reference database was generated for the Oforikrom municipality of the Ashanti region in Ghana, and validated by geocoding 108 preprocessed local addresses. The results show a 100% match rate between the 108 addresses and the reference database, with 10% of those matches determined by qualitative and approximate spatial relations. The match-rate was 88% with no preprocessing of the input addresses. Point-based geocoding was found to be the most practicable approach to develop a reference database for geocoding addresses in SSA, or areas characterized by lack of geographical referencing. The widespread usage of landmarks and paratransit for geographic referencing in SSA provides the potential to adapt this study to countries/areas with informal settlements and poor geographic referencing.