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Haasepeter (Peter Haase)
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User Since
Feb 14 2015, 8:20 PM (292 w, 1 d)
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Recent Activity

Mar 16 2016

Haasepeter added a comment to T130049: Coordinate order in RDF is wrong.

The WKT standard is actually quite clear that order is longitude, latitude.
See http://www.geoapi.org/snapshot/javadoc/org/opengis/referencing/doc-files/WKT.html#AXIS
"If the optional AXIS terms are not present, then the default values are assumed:
Geographic Coordinate System (GEOGCS) AXIS["Lon",EAST],AXIS["Lat",NORTH (λ, φ)"

Mar 16 2016, 1:20 PM · Patch-For-Review, Wikidata-Query-Service, Wikidata, Discovery

Feb 19 2015

Haasepeter added a comment to T88717: Investigate BlazeGraph aka BigData for WDQ.

Regarding the RDR/Wikdata Toolkit discussion: Markus is not available this week, he will propose a time for a call next week.

Feb 19 2015, 12:29 PM · Wikidata-Query-Service, MediaWiki-Core-Team

Feb 16 2015

Haasepeter added a comment to T88717: Investigate BlazeGraph aka BigData for WDQ.

Nik, which dates/time would be be good for you to talk?
I can arrange a web conference.

Feb 16 2015, 9:36 PM · Wikidata-Query-Service, MediaWiki-Core-Team

Feb 15 2015

Haasepeter added a comment to T88717: Investigate BlazeGraph aka BigData for WDQ.

I'd be happy to have that discussion. We can setup another web conference if you like.

Feb 15 2015, 10:06 AM · Wikidata-Query-Service, MediaWiki-Core-Team

Feb 14 2015

Haasepeter added a comment to T88717: Investigate BlazeGraph aka BigData for WDQ.

On Tuesday I had shown you some sample queries and visualizations (http://www.grapphs.com:8087) based on the unqualified/simple RDF statements of the Wikidata RDF export.
The question came up how to query the qualified statements.
I have also loaded the qualified statements from http://tools.wmflabs.org/wikidata-exports/rdf/exports/20150126/
As an example, please see http://www.grapphs.com:8087/resource/Q42
that answers the question from above "give me all data about Douglas Adams (Q42) that came from Encyclopædia Britannica Online (Q5375741)".

Feb 14 2015, 9:29 PM · Wikidata-Query-Service, MediaWiki-Core-Team