Using property P402 is not a very good idea since object ids in OSM aren't guaranteed to be stable. nodes, ways and relations each have their own 'namespace' and sometimes information is refined by moving it from a node to a way or from a node or a way to a relation (multipolygon), usually this means he original object vanishes and property P402 isn't pointing anywhere anymore.

The only way that makes sense is to add wikidata tags to OSM objects.

Polyglot


2014-03-20 18:21 GMT+01:00 David Cuenca <dacuetu@gmail.com>:
On Thu, Mar 20, 2014 at 5:17 PM, Susanna Ånäs <susanna.anas@gmail.com> wrote:
An independent project will require a lot of MediaWiki related knowledge that is not necessarily found in an initial group of interested individuals. Or combined OSM, MediaWiki & Wikidata knowledge, which may be even more sparse. It would be more relaxed in regard to rules and guidelines. Could it be re-integrated to Wikidata later, or would it run to in-evident oblivion?

It could be re-integrated, but I wouldn't start a wikibase repo only for the specific case of historical data. If there is a sizeable community that could mantain a full-fledged repository of geographic entities (as understood in Wikidata terms), then the historic information could be a subset of that. OSM can do it (and actually it is being done more or less), but that is something that should be decided by their community.
 
An integrated path would require complying to all guidelines eg. re: notability. It would cause a lot of waiting time for reaching consensus while defining properties – which is also needed in an independent project.

I think the main intersection points are entities and properties. With entities it is already happening (using property p402), but with properties we still have no technical means of saying "this property in WD is the same as this other property in project X".
 
Are you going to be in the Zürich hackathon to discuss this?

Not sure yet, but I have seen that Katie and Daniel will be there and they have a deeper technical knowledge than me :)

Cheers,
Micru

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