RDF serializer for entities (baseline)
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	daniel
	Feb 1 2013, 11:21 AM

Description

For RDF dumps as well as the linked data interface, we need a way to convert entities to RDF, as defined in https://meta.wikimedia.org/wiki/Wikidata/Development/RDF. RDF serialization should be supported at least for RDF/XML and n-triples, but N3/Turtle would be very nice to have too.

To allow us to create dumps of millions of entities, the RDF serialization component must be able to operate in streaming mode, outputting the header, then one entity after the other, then a footer.

Version: unspecified
Severity: normal

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Reference: bz44578

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Status	Assigned	Task
Open	None	T88728 Improve Wikimedia dumping infrastructure
Open	None	T88991 improve Wikidata dumps [tracking]
Open	None	T46581 Partial dumps
Resolved	Smalyshev	T46580 Script for creating RDF dumps of all entities
Resolved	None	T46578 RDF serializer for entities (baseline)
Resolved	None	T46579 Low-level RDF serialization library
Duplicate	None	T211495 Dump(s) of Wikidata classes
Duplicate	None	T211497 Dump(s) of Wikidata instances of Q5
Open	None	T162351 Create a "page prop" RDF dump for Wikidata entities ("pagePropertiesRdf")
Open	None	T98320 [Task] Create dump of entity redirects (JSON or n-triples)
Open	None	T285307 Create randomly split partial entity dumps

Event Timeline

• bzimport raised the priority of this task from to Needs Triage.Nov 22 2014, 1:28 AM

• bzimport added a project: MediaWiki-extensions-WikibaseRepository.

• bzimport set Reference to bz44578.

• bzimport added a subscriber: Unknown Object (MLST).

daniel created this task.Feb 1 2013, 11:21 AM

We decided on EasyRDF (http://www.easyrdf.org) for modeling and exporting RDF after discussions on semantic-web@w3.org.

Good, but how is this "fixed"? Do we now have a method you can give an Entity, and it outputs RDF? easyrdf.org handles the low level RDF stuff, but not the binding to our PHP objects and data model, right? At least not without additional work...

Reopening.

Ie9f2f89 provides a baseline, but the mapping is incomplete.

repurposing this ticket to refer to the baseline implementation only. For claims/statements, see bug 48141. Please create further follow-ups as blockers of the new tracking bug 48143.

Related URL: https://gerrit.wikimedia.org/r/62804 (Gerrit Change Ie05a67c810755cd19bb59ae133efcc0e76b717ef)

https://gerrit.wikimedia.org/r/62804 (Gerrit Change Ie05a67c810755cd19bb59ae133efcc0e76b717ef) | change APPROVED and MERGED [by Denny Vrandecic]

Related URL: https://gerrit.wikimedia.org/r/63433 (Gerrit Change Ie05a67c810755cd19bb59ae133efcc0e76b717ef)

https://gerrit.wikimedia.org/r/63433 (Gerrit Change Ie05a67c810755cd19bb59ae133efcc0e76b717ef) | change APPROVED and MERGED [by Tobias Gritschacher]

Luke081515 removed a subscriber: • wikibugs-l-list.Jan 28 2016, 6:06 PM

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RDF serializer for entities (baseline)Closed, ResolvedPublicActions

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RDF serializer for entities (baseline)
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