[Geocoding] [OpenStreetMap] #5256: Introduction of error-tolerant search for house numbers with additional

[OpenStreetMap]

#5256: Introduction of error-tolerant search for house numbers with additional
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 Reporter:  is-zUser             |      Owner:  geocoding@…
     Type:  enhancement          |     Status:  new
 Priority:  major                |  Milestone:
Component:  nominatim            |    Version:
 Keywords:  house number search  |
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 In house numbers with addition in Germany different formats are registered
 at the addresses (eg 1b or 1 B). With Search 1b are found not 1 B, Looking
 for 1 B is not found 1b. Address lookup results currently only available
 with the exact search input. Therefore, a house number search is
 recommended seach two versions (with and without space). Similar as a
 street search with and without abbreviation is possible.

 Background:
 Since there are no uniform rules on the wiki regarding the spelling, it is
 possible that both spellings are used. In general, most people used the
 notation 1 - no space. But since 2011, ruled the German standard DIN 5008
 a notation with a space between the number and letter. Normally this is in
 Germany taught and sooner or later implemented in practice. Here are a few
 links (German):

 [http://www.sekretaerinnen-
 service.de/newsletterarticle.asp?his=17.42.55.8177&id=16679]

 [http://www.klaus-kolb.de/DIN5008.pdf]

 [http://www.fachlehrerseite.de/viewtopic.php?t=2975]

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Ticket URL: <https://trac.openstreetmap.org/ticket/5256>
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