What is the current coverage of Who's on First in term of number of
places, types of places, and databases linked?
They claim <https://www.whosonfirst.org/> 26 million place records. I
haven't cloned the data repository
<https://github.com/whosonfirst-data/whosonfirst-data> to verify (it's
huge).
There are 27 place types
<https://www.whosonfirst.org/docs/placetypes/#placetypes> (code
<https://github.com/whosonfirst/whosonfirst-placetypes/tree/master/placetypes>
).
There is a long list <https://www.whosonfirst.org/docs/sources/list/> of
sources (code
<https://github.com/whosonfirst/whosonfirst-sources/tree/master/sources>),
but an incomplete list of concordances
<https://www.whosonfirst.org/docs/concordances/>. But as a random example,
here are the concordances for Montréal.
<https://data.whosonfirst.org/101/736/545/101736545.geojson>
"wof:concordances":{
"dbp:id":"Montreal",
"fb:id":"en.montreal",
"fct:id":"03c06bce-8f76-11e1-848f-cfd5bf3ef515",
"gn:id":6077243,
"gp:id":3534,
"loc:id":"n80132975",
"nyt:id":"N59179828586486930801",
"qs:id":239659,
"qs_pg:id":239659,
"tgn:id":7013051,
"wd:id":"Q340",
"wk:page":"Montreal"
}
I hope this helps!
On Wed, Jan 31, 2018 at 2:25 PM, Nicolas Torzec <torzecn(a)oath.com> wrote:
> Hi,
>
> Assuming the precision of those mappings is good, I also think that it
> would make sense to import them into Wikidata to increase its coverage of
> geographic identifiers (Q36214810) and authority control ID for places
> (Q19829908).
What is the current coverage of Who's on First in term of number of
places, types of places, and databases linked?
>
> -N.
>
>
>
> On Tue, Jan 23, 2018 at 11:47 AM, David Barratt <dbarratt(a)wikimedia.org>
> wrote:
>
>> Once upon a time there was an awesome maps company called Mapzen
>> <https://mapzen.com/>. All of their software was open source and all
>> their data sets were licensed under a free license.
>>
>> Sadly they are shutting down <https://mapzen.com/blog/shutdown/>.
>>
>> One of their projects was Who's on First <https://www.whosonfirst.org/>
which
>> is a gazetteer <https://en.wikipedia.org/wiki/Gazetteer> of places. The
>> data is a huge collection
>> <https://github.com/whosonfirst-data/whosonfirst-data> of geojson files
>> hosted on github.
>>
>> The place files include a concordance of ids in other systems...
>> including Wikidata. :)
>>
>> Mapzen used the data in Wikidata in their Places API
>> <https://mapzen.com/documentation/places/> (source code
>> <https://github.com/whosonfirst/whosonfirst-www>) to translate place
>> names.
>>
>> I'm not sure if we would have any interest in using/importing this data
>> in Wikidata, but I thought I'd make more people aware of an awesome free
>> license data set that needs some help now that Mapzen is going away.
>>
>> Thanks for everything you do!
>> David Barratt
>>
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>>
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>>
>>
>
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