Wikidata and DBpedia have potential for collaboration. Wikidata is a structured data project used in Wikimedia projects, intended to be practical and populate info boxes and interwiki links. It is community developed and supports all languages. Reasonator visualizes and formats Wikidata content using its API. While Wikidata and DBpedia currently link to each other's data, there is opportunity for DBpedia to research Wikidata data and help validate and curate it, now that Wikidata handles more data storage and curation. Both projects would benefit from sharing research results to improve and use each other's data.

1. WIKIDATA & DBPEDIA
A JOINT INTEREST
GERARD MEIJSSEN

2. WHAT IS WIKIDATA
The Wikimedia project for structured data
It is intended to be practical and to be used
Interwiki links & info boxes are primary targets
Wikisource, Wikivoyage and Commons are included
It is inherently multi lingual. Every language does not
cover 50% of all items
• All Wikipedia articles COULD have a Wikidata item
• Statements are included by hand or by bot
• Most items have 1 or less statements
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3. ABOUT WIKIDATA
• It includes links to many external sources like ORCID
and VIAF but not DBpedia …
• The most informative statistics are here
• An item with many statements is not informative
• Reasonator does that job
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Wikidata is developed in Germany
Its community is nbr 5 in active Wikimedia editors
All recognised languages may be supported
The community decides on the (continued)
existence of properties

4. REASONATOR
• It visualises Wikidata content
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Is completely in Javascript and uses Wikidata API
May use its sister database for speed
It features language fallback but always shows a label
It has informative pop up windows that include images
It does have specific formatting and reasoning for specific
subclasses (humans locations taxons)
• This can be extended …
• Provides “left to right” support (think Arabic)

5. WIKIDATA AND DBPEDIA
• There is a need for validation and curation of data
• External resources COULD be used for this
• Practical applications of Dbpedia technology are
welcome (there are preconditions)
• Wikidata is NOT an academic resource
• When the storage and the curation of data is
increasingly handled at Wikidata, Dbpedia could
concentrate on the research of the data and best
practices

6. WIKIDATA AND DBPEDIA
• There are plenty of opportunities for a Dbpedia
approach of Wikidata
• Wikidata will start to reach out to external sources
and the comparison and curation will happen in
both directions
• Please do your research and share the results in
Wikidata. It is how your data gets used