On 01.05.2016 01:34, Jan Macura wrote: Hi Jan, We have revised the OWL/RDF encoding as part of the work on the SPARQL query service, and the URIs have been changed in the process. Many of the same terms can still be found under the new namespace. The new namespace reflects that the ontology is the same for any site using this software, not just Wikidata. There have also been further modifications in the RDF export, e.g., in relation to how certain values are encoded (e.g., geo coordinates use WKT in Wikidata, but used a custom type with planet in our initial RDF dumps). Another major extension was that simplified data values (encoded as single resources) are now available on every level -- statement, qualifier, reference -- and some new properties had to be introduced for this. Finally, there are also some changes in the URIs used for various RDF properties. All in all, the basic encoding (with statements, references, and complex values represented by own RDF resources) is the same, but the syntactic details changed quite a bit between our original ISWC publication and the launch of the SPARQL service. Cheers, Markus -- Markus Kroetzsch Faculty of Computer Science Technische Universität Dresden +49 351 463 38486 http://korrekt.org/

Hi! The items in wikiba.se/ontology hierarchy are those that would be relevant and would have the same meaning for any Wikibase install - i.e. individual statements, ranks, properties, etc., basic data type predicates. They do not depend on particular Wikibase instance, thus they were moved to wikiba.se. If you have your own Wikibase install, your items and properties would carry your domain name, since they are not Wikidata items. But Wikibase ontology would stay the same. Thus the difference. And yes, the old form of the ontology URLs will not be used anymore on Wikidata or Wikibase code. -- Stas Malyshev smalyshev(a)wikimedia.org

On Sat, Apr 30, 2016 at 7:34 PM, Jan Macura &lt;macurajan(a)gmail.com&gt; wrote: The original is currently a 404 which isn't very cool URI <https://www.w3.org/TR/cooluris/>-ish. Shouldn't the ontology still be available for those who have used it in the past? Are there additional URIs for non-Swedish versions of the new ontology? Tom

On 01.05.2016 17:25, Tom Morris wrote: I believe the ontology has never been available under these URLs. It had been supplied in a different document at the time when our work on RDF was still a proposal from a research paper rather than the official implementation by Wikidata. We didn't know that our work had been so widely adopted in the short time between its publication in late 2014 and the roll out of the current solution in mid 2015. If there are any linked data users who need the old ontology under this old location, it would be interesting to hear about their use cases, but I would rather suggest us all to switch to the new URIs. No. :-) Markus -- Markus Kroetzsch Faculty of Computer Science Technische Universität Dresden +49 351 463 38486 http://korrekt.org/

Thanks for reply. 2016-05-02 7:19 GMT+02:00 Markus Kroetzsch &lt;markus.kroetzsch(a)tu-dresden.de&gt;de>: Well, the point is, I was using the thirt party SPARQL enpoints of Universidad de Chile ([1], dead now) and Openlink ([2]), where the queries with this ontology worked fine, and now when I discovered, that WMF already launched its own endpoint, the queries don't work.. Little confused, so I am asking.. The other thing is, my primary sources were available scientific articles, namely [3]. Now it seems that *a lot* has changed since. [1] http://milenio.dcc.uchile.cl/sparql [2] http://lod.openlinksw.com/ [3] http://korrekt.org/papers/Wikidata-RDF-export-2014.pdf Thanks Jan

On 02.05.2016 20:26, Jan Macura wrote: Yes, we should publish an updated journal version of that paper to ensure that written records are up-to-date again (research and application each have their own pace that is hard to synchronise). It is not that much work to update queries to the new format, but I can see that it takes a while to look for IDs to replace the old ones. Maybe the easiest way is to look at the example queries provided in the query.wikidata.org UI. The use of the new ontology URIs is really almost the same as for the old ones. The Chilean endpoint was provided as an early testbed before the official service was life. We have stopped running it, for obvious reasons. A big advantage of the official Wikimedia endpoint is that it is updated with live data in near real-time (subject to availability ;-). It is also fairly reliable, since there are normally two servers answering queries. Best regards, Markus -- Markus Kroetzsch Faculty of Computer Science Technische Universität Dresden +49 351 463 38486 http://korrekt.org/

On 02.05.2016 21:43, Jan Macura wrote: Technically, these two variants are just a case of "different URIs": RDF graphs do not have a notion of "suffix" or "namespace". The reason why we put the modifying part of the URI before the Wikidata entity ID is that it is easier for people to write in the interface. The reason for the exact shape of the URIs (with several, sometimes nested "directories") has been decided mostly based on technical considerations that I don't recall in detail. Cheers, Markus -- Markus Kroetzsch Faculty of Computer Science Technische Universität Dresden +49 351 463 38486 http://korrekt.org/