[OSM-talk] (licence of wikidata) was: Can wikidata links help fight name inflation?

[Eugene Alvin Villar]

On Mon, Jun 8, 2015 at 7:46 PM, Martin Koppenhoefer <dieterdreist at gmail.com>
wrote:

>
> 2015-06-08 12:34 GMT+02:00 Eugene Alvin Villar <seav80 at gmail.com>:
>
>> Please see the following page for
>> the relevant discussion: https://www.wikidata.org/wiki/Help:Sources
>>
>
>
> the second word in this page says you don't need sources for everything
> ("The majority of statements on Wikidata should be verifiable")
>
>
>
>> So in your example, a city can be tagged as being a metropolis if a
>> reliable source states so, such as a government economic planning
>> office.
>>
>
>
>
> for obvious reasons "government economic planning offices" are not
> independent but following an agenda. How is dealt with different sources
> declaring opposite "facts"?
> The current situations looks rather different though, most properties of
> "Berlin" (the most known one of all Berlins, not the small villages and
> towns with the same name), including the "metropolis" "fact", have 0
> references, only few have 1 reference, and in some cases this reference is
> a wikipedia article: https://www.wikidata.org/wiki/Q64
>
> Interestingly, small, unknown places do not seem to have less references,
> I checked for "Breitenholz", a small place nobody is supposed to know, not
> even people from southern Germany, where it lies, and it had 3 out of 4
> facts documented with references (then I saw that all those references were
> from wikipedia): http://www.wikidata.org/wiki/Q906373
>
> Venice, world famous Italian city, had almost no references that weren't
> from wikipedia: http://www.wikidata.org/wiki/Q641
>
> Even London does not boast with references for all the facts about it
> (many of them from wikipedia), but it has 2 "independent" references to
> confirm its "exact coordinates": the Russian and the English wikipedia ;-)
>
> On a sidenote: I was astonished that the reference for the fact that
> Berlin is the capital of Germany, was a link to a UN statistical database
> [1], rather than a link to the German (actually international because of 2
> countries agreeing on the contract) law that defines this:
> http://www.gesetze-im-internet.de/einigvtr/art_2.html
> [1] http://data.un.org/CountryProfile.aspx?crName=Germany
>
> Given that (AFAIK) the data is mostly imported/derived from wikipedia and
> not all content in wikidata is "facts" it seems that the CC-0 license
> cannot be safely assumed for the dataset as a whole.
>
> Interestingly, I have seen that London has a reference with the
> OSM-relation ID for London. Given that wikidata operates systematically and
> seems to copy IDs from OSM (i.e. derivative database or maybe collective
> database), wouldn't this imply ODbL for wikidata or at least the OSM-parts
> of it? For reference, this is the property:
> http://www.wikidata.org/wiki/Property:P402
>

Martin, just like OSM, Wikidata is a work in progress. ;) This is why Andy,
I, and others want to promote the use of Wikidata in order to grow it. This
is especially true now that Freebase, another open structured-content
database (bought by Google), has decided to shutdown in favor of Wikidata.
Freebase has substantially more data than Wikidata, but has no concept of
citations or sourcing. There is currently a process for migrating data from
Freebase to Wikidata.

I have also added the treaty source that Berlin is the German capital to
the capital statement.

Regarding the statements imported from Wikipedia, these are considered
jumpstart data and are treated as unsourced until proper citations are
added. As Help:Sources says: "Please note that while pages on Wikipedia
(and other Wikimedia sites) should and can be added as sitelinks, they are
not appropriate as sources for Wikidata statements."

As for OSM ID number, this falls under the so-called "Fairhurst Doctrine"
and would not be considered "Substantial" under ODbL if and only if the
community agrees and the OSMF endorses. See this mailing list discussion
[1] and Community Guideline proposal [2].

[1]
https://lists.openstreetmap.org/pipermail/legal-talk/2009-October/002881.html
[2]
http://wiki.openstreetmap.org/wiki/Open_Data_License/Metadata_Layers_-_Guideline
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