Markus,
Thanks for the thorough reply!
you can use SPARQL 1.1 transitive closure in queries (using "*" after
> properties), so you can find "all subclasses" there too. (You could also
> try this in Protege ...)
I had a feeling I was missing something basic. (I'm also new to SPARQL.)
Using "*"
Eric,
Two general remarks first:
(1) Protege is for small and medium ontologies, but not really for such
large datasets. To get SPARQL support for the whole data, you could to
install Virtuoso. It also comes with a simple Web query UI. Virtuoso
does not do much reasoning, but you can use SPAR
Markus,
Thank you very much for this. Translating Wikidata into the language of
the Semantic Web is important. Being able to explore the Wikidata taxonomy
[1] by doing SPARQL queries in Protege [2] (even primitive queries) is
really neat, e.g.
SELECT ?subject
WHERE
{
?subject rdfs:subClassOf
Hoi,
I do not mind RDF. I do not mind OWL. What I do mind is that people assume
that everyone assumes that others know what it means and appreciate it as
being "good". When people use an RDF tool that produces obviously
incomplete and therefore incorrect information, it is beyond me that an
impleme
Gerard,
You sometimes sound as if everything is lost just because somebody put
an RDF file on the Web ;-)
If you don't like the simplified export, why don't you just use our main
export which contains all the data? Can't we all be happy -- the people
who want simple and the people who want c
On 13/06/14 15:52, Bene* wrote:
...
Did I understand you right, Markus, that you leave out all statements
which have at least one qualifier? Wouldn't it make more sense to leave
out the qualifiers only but add the statements without qualifiers
anyway? Because this would solve eg. Gerard's prob
Am 13.06.2014 11:08, schrieb Gerard Meijssen:
Hoi,
When you leave out qualifiers, you will find that Ronald Reagan was
never president of the United States and only an actor. Yes, omitting
the statements with qualifiers is wrong but as a consequence the total
of the information is wrong as wel
Hoi,
Joe, plain vanilla Wikidata is not informative. It provides statements in
no particular order and it does it in a way where you have to scroll-a-lot
to see it all. It takes tools like Reasonator to organise the data so that
it becomes informative. With a little code it is possible to provide s
Hi Gerard,
As I said, I don't follow your arguments. Wikidata Query, for example,
has also started without any qualifiers at all, and yet it was a useful
tool from the beginning.
Your feedback is always welcome, but there is a point when critique is
no longer constructive, and when it is bes
Never forget that even the full data, with all the qualifiers included, is,
in most cases, little more information than what is contained in the lead
paragraph of a complete wikipedia article.
Wikidata will be useful but it will never replace the encyclopedia articles
and will, I believe, be most
Hoi,
Not really. What is being discussed is a tool that is external to Wikidata.
Thanks,
GerardM
On 13 June 2014 12:37, Joe Filceolaire wrote:
> I think it is a reasonable ambition that the 'preferred' statement should
> always provide accurate information even when the qualifiers are miss
I think it is a reasonable ambition that the 'preferred' statement should
always provide accurate information even when the qualifiers are missing.
For example, if we have population figures for various years and 'applies
to part' figures for males, females, under 20's etc. then the most recent
't
Hoi,
There is a huge difference between being complete and leaving out essential
information. When you consider Ronald Reagan [1], it is essential
information that he was a president of the USA and a governor of
California. When you only make him an actor and a politician, the
information you are l
Hi Gerard,
On 13/06/14 11:08, Gerard Meijssen wrote:
Hoi,
When you leave out qualifiers, you will find that Ronald Reagan was
never president of the United States and only an actor. Yes, omitting
the statements with qualifiers is wrong but as a consequence the total
of the information is wrong a
Hoi,
When you leave out qualifiers, you will find that Ronald Reagan was never
president of the United States and only an actor. Yes, omitting the
statements with qualifiers is wrong but as a consequence the total of the
information is wrong as well.
I do not see the point of this functionality. I
On 10/06/14 22:50, Gerard Meijssen wrote:
Hoi,
It is stated that there are no qualifiers included. In one of the
articles you write that it is to be understood that the vailidity of the
information is dependent on the existing qualifiers.
What is the value of these RDF exports with the qualifier
Hoi,
It is stated that there are no qualifiers included. In one of the articles
you write that it is to be understood that the vailidity of the information
is dependent on the existing qualifiers.
What is the value of these RDF exports with the qualifiers missing?
Thanks,
GerardM
On 10 June
Hi all,
We are now offering regular RDF dumps for the content of Wikidata:
http://tools.wmflabs.org/wikidata-exports/rdf/
RDF is the Resource Description Framework of the W3C that can be used to
exchange data on the Web. The Wikidata RDF exports consist of several
files that contain different
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