name only“: Names are often misused to describe all kinds of things • Ranking of geonames! • Tag admin_level: There is no uniﬁed tagging yet in OSM for town parts and village parts • Issues in assigning hierarchy of city/town/village/suburb/ neighborhood • How to deal with objects of larger aerial extent? Currently often captured as node: which to choose? what is the extent? what is the bbox?
other addr keys on… • an node, isolated or other (e.g. shops) • a node on top of a building boundary with tag entrance=yes • a node on a polygon with key building • a node on a polygon representing the perimeter of a site • an relation with key associatedStreet • an invisible line (way) with key addr:interpolation
House number as part of relation exists? 2. Do addr:street or addr:place exists and match directly? 3. Apply fuzzy string/text search if street/place do not match. 4. Apply street proximity search if there is no street/place
ambiguity • Sharing/deduplicating addr tags among objects inside a building polygon • addr nodes with entrance=yes sitting on top of a building (way): have to give addr to building (and building would have to give addy to everything inside • Special treatment of nodes with tag addr:housenumber=1;3;5 with values separated by semicolon