[OSM-talk] Adding Wikidata tags to 70k items automatically

[Edward Betts]

Matthijs Melissen <info at matthijsmelissen.nl> wrote:
> On 27 August 2014 17:47, Edward Betts <edward at 4angle.com> wrote:
> > I've written some code to match items in Wikidata with items in OSM. Currently
> > I have found 70,849 unique matches, where there is a one-to-one mapping
> > between OSM and Wikidata objects.
> 
> To clarify (this wasn't clear to me from your e-mail): you are not
> purely matching name tags, but you also require matching objects to be
> in close geographic proximity (using the location tag from Wikidata).
> 
> Doing that, I think the chance of wrong matching is negligible. I also
> looked through the list myself, and couldn't find any wrong match.

Sorry, I should've been clearer. My search starts with articles in English
Wikipedia Categories, I look for the matching Wikidata items, then search OSM
for items within 400m that have matching tags.

For example 'Category:Castles by country' and 'historic=castle'.

I compare the names with some fuzzy matching, if the names match then the two
items are the same.

The credit for this idea goes to Andy Mabbett (pigsonthewing), I just wrote
the code.

-- 
Edward.