SMW and Wikidata

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About Wikidata[edit]

The goal of Wikidata is to create a common data repository (something similar to Wikimedia Commons) where data can be shared among other Wikimedia projects and by/with third parties.

Differences between SMW and Wikidata[edit]

Figure 1:
Figure 2:

The main use case of Wikidata (a centralised, multi-lingual site that serves as a data repository) is different from that of SMW (a data-enhanced MediaWiki), and this leads to a number of differences.

Central to a wikidata statement is that its factual claim is supported by reference(s) (source of the claim). For example, when SMW makes a claim about the population of Berlin it would only be annotated with Berlin has a population of 3,5 Mio (see Figure 1) where Wikidata would make an extended statement describing it as Berlin's population being 3,5 Mio as of 2011 according to the German statistical office (see Figure 2).

In summary[edit]

  • Every fact will also have an (optional) reference
  • Wikidata will also use more complex datatypes (e.g., since many text values can be translated).
  • Both Wikidata and SMW are still mostly based on property-value assignments, and Wikidata will have a Property namespace.
  • Complex structures in Wikidata could be captured in SMW using internal objects

Common denominators of SMW and Wikidata[edit]

Integration between SMW and Wikidata[edit]

For a first example, see Service links and the page for Vienna with the Property:Wikidata ID. It demonstrates, how Service links or External identifiers can be used to link values of a SMW property to Wikidata IDs.

Technical background[edit]

The software underlying Wikidata is called Wikibase. It consists of two extensions: Repository (where data is stored; this will run at and Client (that pulls data into other MediaWiki sites; this will run at Both extensions will be installable on MediaWiki sites to get Wikidata-like features there.

The user interface of Wikibase Repository will be based on input forms, a bit like a full-page, editable Factbox, but much more advanced, with a lot of support for entering values.

Query language[edit]

Ideas for a integration of SMW and Wikibase/Wikidata[edit]

  • Push data from SMW to a Wikibase instance (as it would be done wich any other triple store)
  • Push data from SMW to Wikidata.
  • Import ontolgies from Wikidata to SMW instances
  • Consuming data from Wikidata in your SMW instance. There are several approaches:
    • get the data via SPARQL using the extension Linked Wiki
    • get the data via JSON using the extension External Data
    • get the data via JSON and accessing data based on the property Wikidata ID using the extension WikidataShow

See also[edit]

A total of 12 contribution were made to concerning SMW and Wikidata:

Title Description Contributor Keywords Type Video
[[Semantic MediaWiki for Assessment in Education|]] Lloyd Rutledge wikidata, wikibase extension, content management Talk
This presentation will provide an insight into the past four years of Wikidata and the upcoming future. Lydia Pintscher wikidata, wikibase extension, content management Presentation
The case for storing semantic data in tables instead of, or in addition to, graphs - for SMW/Cargo, Wikidata, and beyond Yaron Koren Cargo, Wikidata, templates Talk
Overview of the Semantic MediaWiki ecosystem, it's todays relevance in relation to OpenData, WikiData, OpenGLAM and the Semantic Web. Bernhard Krabina open data, wikidata, dbpedia, glam, Semantic Web Talk
Last year, Wikidata, the project that brings structured data to Wikipedia, was presented at SMWCon. This talk is all about Wikibase, the software behind Wikidata. Jeroen De Dauw Wikidata, Wikibase Talk
This talk informs about the work of incorporating Wikidata in "Wikipedia Live Monitor" tool. Thomas Steiner breaking news detection, wikidata, wikipedia Talk
This talk covers the experience made with Wikidata by "Hallo Welt! Medienwerkstatt GmbH". It's about why we chose it and what were the difficulties we had to deal with. Markus Glaser, Robert Vogel Wikidata, BlueForge, API Talk, Technical talk
An introduction to the Wikidata API Daniel Kinzler, Tobias Gritschacher MediaWiki, Wikidata, API Tutorial
A quick look at what Wikidata has achieved so far and where it is going Lydia Pintscher Wikidata Talk
A tutorial showing you how to use Wikidata to enrich data in your wiki Daniel Kinzler, Tobias Gritschacher MediaWiki, Wikidata, API Tutorial
Wikidata: Semantic Wikipedia Denny Vrandečić Wikidata Keynote

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You may consult this page which contains more credible information: SMW and Wikidata
This documentation page applies to all SMW versions from N/A to the most current version.