On 4/18/15 5:48 PM, Ricordisamoa wrote:
Il 11/04/2015 13:29, Antoine Isaac ha scritto:
Hi,
Is the 'template' word so bad? Paraphrasing Daniel's definition of the
MediaWiki template, one could see a 'WikiData template' as
a set of of properties that can be re-used, e.g. to make create statements about a
certain class. (the 'parameter' bit could be understood as adding or removing
properties from the templates, e.g. using twice a property or adding a new one when
it's needed).
What we're after seems to exist already, described as 'item structure':
http://www.wikidata.org/wiki/Wikidata:WikiProject_Visual_arts/Item_structure
Or 'list of properties':
https://www.wikidata.org/wiki/Wikidata:List_of_properties/Works
'schema convention' matches the idea, but the wording may be too abstract. I come
from a community that calls such things 'description set profiles'; such
expressions have a hard time being adopted in less technical communities...
About the text values. A big +1 to Daniel at not trying to represent semi-structured
text, which is meant to piggyback structured data in legacy systems that can't handle
it. The matter is rather the availability in Wikidata of text-like summaries like the
dbpedia-owl:abstract at
http://dbpedia.org/page/Castle . Having things like this together
with the Wikidata data would be great for data-reusers like us, instead of having to fetch
it from elsewhere!
There's TextExtracts <https://www.mediawiki.org/wiki/Extension:TextExtracts>
for that: example
<https://en.wikipedia.org/w/api.php?action=query&prop=extracts&exsentences=1&explaintext=1&titles=Castle>
Thanks!
Unfortunately this is not in the data itself. One has to know that there is an API, and
then call it.
Actually there seems to be such similar 'description' in the data at wikidata:
https://www.wikidata.org/wiki/Q23413 says "type of fortified structure built in
Europe and the Middle East during the Middle Ages by nobility"
It matches partly the rdfs:comment at
http://dbpedia.org/page/Castle and the output of the
TextExtract.
It's a bit mysterious why it's not been exactly entered as on the Wikipedia page
(and thus DBpedia) but well, I guess it meets the original question: while the Wikidata
page doesn't say it's a statement, it is accessible through the API and the SPARQL
endpoint(s).
Best,
Antoine