OpenAddresses, OpenStreetMap and Local Addresses

摘要

1. OpenStreetMap has crowdsourced addresses 2. Primarily collected from the field. Subject to: 2.1 Incomplete posting 2.2 Incorrect posting 2.3 Incorrect signage 2.4 Deteriorated signage ( "2112" becomes "112") 3. Some may be imported from public sources: District of Columbia 4. Some collected from secondary sources. Subject to: 4.1 Whisper Down the Lane Effect 4.2 Mistaken interpretation of abbreviations 5. Completeness is an issue 6. Street names are not parsed.