Am 05.02.2016 um 10:56 schrieb Markus Kroetzsch:
On 04.02.2016 18:59, Daniel Kinzler wrote:
Am 04.02.2016 um 08:03 schrieb Markus Krötzsch:
Data model updates are costly. Don't make
them on a week's notice, without prior
discussion, and without having any documentation ready to give to data users. It
would also be good to announce breaking technical changes more prominently on
wikidata-tech as well.
These have been discussed for months, if not years. Especially identifiers.
Citation needed ;-) Note that my emails were about math, not about the
The ticket exists since May 2014 <https://phabricator.wikimedia.org/T67397>. I
didn't follow discussions on the wiki, but it has been up on
<https://www.wikidata.org/wiki/Wikidata:Development_plan> since August 2015.
Also, discussing about something is not enough. In the
need to give us the technical details so we can fix our tools. I knew that you
planned to introduce identifier types, but I still don't know the RDF IRI for
this new type.
I send the technical info in a separate mail. You are right that we should do
that kind of thing a bit earlier.
No, sorry, this is just wrong. The datatypes are part
of the model, not of the
data. Changing the format of JSON to include new, hitherto unknown types might
break a tool (and not break others). It will depend on the function of the tool
(and its implementation technique) but some will break.
I think there is a fundamental difference in the perception of format
specifications here. For software that consumes "mix and match" formats like
JSON and XML, I expect them to be written in a forward compatible way: unknown
things just get ignored.
I have written about this in a separate mail to wikidata-tech.
Senior Software Developer
Gesellschaft zur Förderung Freien Wissens e.V.