Hi Maarten,

thanks. That's the best proposal I have seen so far in how to proceed with Phase 1 on Commons. I usually had pushed Commons support further to the back, but with this I think we would indeed create some real value with a small change. I will bounce Commons Phase 1 client support up on my list.

I guess we should disallow sitelinks to the File: namespace, in order to avoid people trying to add metadata about the media files themselves?

Cheers,
Denny



2013/8/10 Maarten Dammers <maarten@mdammers.nl>
Hi everyone,

At Wikimania we had several discussions about the future of Wikidata and Commons. Some broader feedback would be nice.
Now we have a property "Commons category" (https://www.wikidata.org/wiki/Property:P373). This is a string and an intermediate solution.
In the long run Commons should probably be a wikibase instance in it's own right (structured metadata stored at Commons) integrated with Wikidata.org, see https://www.wikidata.org/wiki/Wikidata:Wikimedia_Commons for more info.
In the meantime we should make Commons a wikidata client like Wikipedia and Wikivoyage. How would that work?

We have an item https://www.wikidata.org/wiki/Q9920 for the city Haarlem. It links to the Wikipedia article "Haarlem" and the Wikivoyage article "Haarlem". It should link to the Commons gallery "Haarlem" (https://commons.wikimedia.org/wiki/Haarlem)

We have an item https://www.wikidata.org/wiki/Q7427769 for the category Haarlem. It links to the Wikipedia category "Haarlem". It should link to the Commons category "Haarlem" (https://commons.wikimedia.org/wiki/Category:Haarlem).

The category item (Q7427769) links to article item (Q9920) using the property "main category topic" (https://www.wikidata.org/wiki/Property:P301).
We would need to make an inverse property of P301 to make the backlink.

Some reasons why this is helpful:
* Wikidata takes care of a lot of things like page moves, deletions, etc. Now with P373 (Commons category) it's all manual
* Having Wikidata on Commons means that you can automatically get backlinks to Wikipedia, have intro's for category, etc etc
* It's a step in the right direction. It makes it easier to do next steps

Small change, lot's of benefits!

Maarten

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