Hi Daniel,
I'm also a beginner of SPARQL, so I would like to know the suggestions
of experts - I'm sure there are many of them on this mailing list.
In the meantime, after a struggle and with the help of [1] and [2], I
seem to have made a query which might help:
http://tinyurl.com/hcbbalj
For example, its first result shows that "Allen Allison (Q20745425)"
has a statement "affiliation (P1416)" which cites a paper "Ecological
guild evolution and the discovery of the world's smallest vertebrate
(Q15567682)".
Aside from SPARQL, another thing I'm not sure about is whether if
there are other properties like "stated in (P248)" that expects an
article as its value.
[0]
https://query.wikidata.org/#PREFIX%20wd%3A%20%3Chttp%3A%2F%2Fwww.wikidata.o…
[1]
https://www.mediawiki.org/wiki/Wikibase/Indexing/SPARQL_Query_Examples#Prop…
[2]
https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format
Best,
Yusuke
On Sun, Jan 10, 2016 at 11:53 AM, Daniel Mietchen
<daniel.mietchen(a)googlemail.com> wrote:
Dear all,
I am making my first steps with SPARQL and would appreciate some help
from those in the know (got some help already, but am still getting
stuck easily).
Specifically, I am trying to get an overview of statements that are or
could be sourced to items that are scientific papers.
What I got so far:
(1) Wikidata items that are instances of scientific article
(Q13442814) and have a PMID (P698) or PMCID (P932)
https://query.wikidata.org/#PREFIX%20wd%3A%20%3Chttp%3A%2F%2Fwww.wikidata.o…
(2) Wikidata items that are instances of scientific article
(Q13442814) but do not have a PMID (P698) or PMCID (P932)
https://query.wikidata.org/#PREFIX%20wd%3A%20%3Chttp%3A%2F%2Fwww.wikidata.o…
What I want now is a list of (ideally) statements (or - less ideally -
items with such statements) that have references of one of the types
given in (1) and (2).
Any pointers?
Thanks,
Daniel
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