On 9/8/15 11:26 AM, Markus Kroetzsch wrote: > > > On 08.09.2015 16:48, Kingsley Idehen wrote: >> On 9/8/15 8:56 AM, Markus Kroetzsch wrote: >>> The Wikimedia Foundation has just announced its official live query >>> service, based on SPARQL. You can do many things with this, since the >>> data is quite rich. Best start with some example queries, found at: >>> >>> https://www.mediawiki.org/wiki/Wikibase/Indexing/SPARQL_Query_Examples >>> >>> The data is based on the current content of Wikidata, so if you find >>> an error or omission, you can directly edit it (I think there might be >>> an update lag of about 1 min, depending on traffic). >> >> Markus, >> >> Great news! >> >> A quick question, in regards to the excerpt above: can I use SPARQL >> query URLs against this service? In addition, can I use SPARQL FED along >> the following lines from other SPARQL Query service providers [1]: >> >> select * where {service <https://query.wikidata.org/> {select * where >> {?s a ?o} limit 10 } } > > Yes, the UI we mostly advertise is not the plain SPARQL endpoint. What > you want is https://query.wikidata.org/bigdata/namespace/wdq/sparql/ > > Your queries are [1] (text [2]) then. > > Nonetheless, the recommended way to link to queries that users can > then view and edit is to refer to https://query.wikidata.org like the > examples do. Links to the plain endpoint query results (in various > formats) should be included there. I think this is a known issue that > will be fixed in due course. > > Markus > > [1] > http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=select+*+where+{service+%3Chttps%3A%2F%2Fquery.wikidata.org%2Fbigdata%2Fnamespace%2Fwdq%2Fsparql%2F%3E+{select+*+where+{%3Fs+a+%3Fo}+limit+10+}+}&should-sponge=&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000000 > > [2] > http://linkeddata.uriburner.com/sparql?default-graph-uri=&qtxt=select+*+where+{service+%3Chttps%3A%2F%2Fquery.wikidata.org%2Fbigdata%2Fnamespace%2Fwdq%2Fsparql%2F%3E+{select+*+where+{%3Fs+a+%3Fo}+limit+10+}+}&should-sponge=&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000000 >
Great! One more thing, if you click on [1] and then click on the HTTP URIs in the solution, none of them resolve (bar schema.org). Is this an oversight re., Linked Data deployment? Ideally, you want to have your SPARQL endpoint enable data exploration via HTTP URIs in the query solution, re., Linked Data. Examples: [1] http://id.nlm.nih.gov/mesh/query -- NIH Query Service [2] http://rdf.disgenet.org/sparql/ -- Disgenet Query Service [3] http://dbpedia.org/sparql -- DBpedia (which let's you explore via Class instances in the query solution). Kingsley >> >> [1] >> http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=%0D%0Aselect+*+where+%7Bservice+%3Chttps%3A%2F%2Fquery.wikidata.org%2F%3E+%7Bselect+*+where+%7B%3Fs+a+%3Fo%7D+limit+10+%7D+%7D&should-sponge=&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000000 >> >> - Query >> >> [2] >> http://linkeddata.uriburner.com/sparql?default-graph-uri=&qtxt=%0D%0Aselect+*+where+%7Bservice+%3Chttps%3A%2F%2Fquery.wikidata.org%2F%3E+%7Bselect+*+where+%7B%3Fs+a+%3Fo%7D+limit+10+%7D+%7D&should-sponge=&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000000 >> >> -- Query Text in Editor >> >> >> >> ------------------------------------------------------------------------------ >> >> >> >> >> _______________________________________________ >> Dbpedia-discussion mailing list >> Dbpedia-discussion@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion >> > -- Regards, Kingsley Idehen Founder & CEO OpenLink Software Company Web: http://www.openlinksw.com Personal Weblog 1: http://kidehen.blogspot.com Personal Weblog 2: http://www.openlinksw.com/blog/~kidehen Twitter Profile: https://twitter.com/kidehen Google+ Profile: https://plus.google.com/+KingsleyIdehen/about LinkedIn Profile: http://www.linkedin.com/in/kidehen Personal WebID: http://kingsley.idehen.net/dataspace/person/kidehen#this
smime.p7s
Description: S/MIME Cryptographic Signature
------------------------------------------------------------------------------
_______________________________________________ Dbpedia-discussion mailing list Dbpedia-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
