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- Title
Geocoding Freeform Placenames: An Example of Deciphering the Czech National Immigration Database.
- Authors
Šimbera, Jan; Drbohlav, Dušan; Štych, Přemysl; Kainz, Wolfgang; Borruso, Giuseppe
- Abstract
The growth of international migration and its societal and political impacts bring a greater need for accurate data to measure, understand and control migration flows. However, in the Czech immigration database, the birthplaces of immigrants are only kept in freeform text fields, a substantial obstacle to their further processing due to numerous errors in transcription and spelling. This study overcomes this obstacle by deploying a custom geocoding engine based on GeoNames, tailored transcription rules and fuzzy matching in order to achieve good accuracy even for noisy data while not depending on third-party services, resulting in lower costs than the comparable approaches. The results are presented on a subnational level for the immigrants coming to Czechia from the USA, Ukraine, Moldova and Vietnam, revealing important spatial patterns that are invisible on the national level.
- Subjects
CZECH Republic; MOLDOVA; UKRAINE; GEOGRAPHIC names; HUMAN migration patterns; EMIGRATION &; immigration; DATABASES; SPELLING errors
- Publication
ISPRS International Journal of Geo-Information, 2021, Vol 10, Issue 5, p335
- ISSN
2220-9964
- Publication type
Article
- DOI
10.3390/ijgi10050335