This document provides a history of Semantic MediaWiki (SMW) and Wikidata, including: - SMW was created in 2006 as a MediaWiki extension to add structured data to wiki pages. It is now used on over 1500 sites. - Wikidata launched in 2012 as a structured database to provide common facts across Wikimedia projects. - SMW allows adding both unstructured text and structured data to wiki pages through features like online forms, queries, and semantic web standards. - An example FINA wiki uses several SMW extensions to integrate structured data from Wikidata into person pages and visualizations. - Opportunities are discussed to further link SMW and Wikidata data through mappings, reconciliation

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Semantic MediaWiki Q20728
and Wikidata Q2013
Bernhard Krabina Q73487199

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Introduction
28. Oktober 2020 · Seite 2

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A little history
 2004 Erik Möller suggests a „Wikidata“ project, Magnus Manske
implements a first prototype
 https://lists.wikimedia.org/pipermail/wikitech-l/2004-September/013126.html
 2006 Vision for a „Semantic Wikipedia“ and „Semantic
MediaWiki“ as a MediaWiki extension
 Völkel/Krötzsch/Vrandečić/Haller/Studer (2006) Semantic Wikipedia
doi:10.1145/1135777.1135863
 Krötzsch/Vrandečić/Völkel (2006) Semantic MediaWiki. doi:10.1007/11926078_68
 from 2006 on SMW is being used in > 1500 public installations
(and many more non-public)
 https://wikiapiary.com/wiki/Extension:Semantic_MediaWiki
 Main developers: James Hong Kong, Jeroen De Dauw
 2012 Wikidata project begins
 with Markus Krötzsch, Denny Vrandečić, Lydia Pinscher, Jeroen DeDauw
 Vrandečić (2012) Wikidata doi:10.1145/2187980.2188242
 2020 Abstract Wikipedia project begins…

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Semantic MediaWiki
 Active community, see SMWCon
 With enterprise, government,
academia and private users

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Semantic MediaWiki
Unstructured Text
 Strengths of Wikis
 Structure via
Categories and
Namespaces
 Collaborative editing
 …
Structured Data
 Web database
 Online forms
 Result lists and formats
via {{#ask:}} queries
 Semantic Web standards
 TripleStore support
 …
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SMW
extensions

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Example:
FINA Wiki
https://fina.oeaw.ac.at/wiki

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FINA Wiki

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Semantic Cite

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Person page
Map (birth,
death place)
Literature
Work
References
Visualisation of
correspondence
Basic data
Iconography
Export
(CSV, RDF)

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Input form queries Wikidata
 Q-Number must be inserted by clicking
 https://www.wikidata.org/w/api.php?action=wbgetentities&sites
=frwiki%7Cenwiki%7Cdewiki&titles={{PAGENAME}}&props=desc
riptions&languages=en&format=json

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Automatied linking to Wikidata

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Wikidata
query
Mermaid
chart

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Standing on the shoulders of giants!
(some extensions involved)
 Chameleon (no extra skinning involved)
 External Data (Wikidata api calls)
 Maps
 Mermaid
 ModernTimeline
 Page Forms
 Semantic Cite
 Semantic Glossary
 Semantic Result Formats
(filtered, jqplotchart, csv, bibtex)
 Title Icon

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Join us!
several talks about Wikidata

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FINA Wiki and Wikidata
 FINA ID could be a qualifier in
Wikidata: Property:P7842
 SMW can provide „result
formats“ RDF, JSON, CSV
 Can be imported directly in
OpenRefine
 SMW can re-import data via
DataTransfer extension
 SMW can re-use vocabularies
(OWL, SKOS, FOAF…)
 How to make futher use of
Wikidata (e. g. Vienna = Q1741)?

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SMW and Wikidata usecases
 Basic Wikidata lookup/mapping
 lookup implemented via External_Data
 basic linking with "External identifier"
 assign SMW Property:Country to P17
[[equals Wikidata Property::P17]]
 reuse of „Service links“?
 Reconcile SMW data with Wikidata
 possible already, via OpenRefine
 should be doable inside SMW (extension using reconciliation API)
 Push SMW data (semi-)automatically to Wikidata
 possible by treating RDF, JSON, or CSV export like any other
datasource for Wikidata
 should be doable inside SMW: on a per-entry-base or batch

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Contact
4. Oktober 2012 · Seite 18
Bernhard Krabina
 krabina@kdz.or.at
 www.kdz.or.at
 @krabina