Wikidata can serve as a linking hub for knowledge organization systems by using its new "mapping relation type" qualifier (P4390) to optionally qualify external property relations with a mapping type like exactMatch, closeMatch, or narrowMatch. This qualifier allows tracking its usage by relation type and external ID properties. The qualifier aims to improve Wikidata's role as a hub for linking different knowledge organization systems.

1. Making Wikidata fit as a Linking Hub for
Knowledge Organization Systems
Joachim Neubert
ZBW – Leibniz Information Centre for Economics, Kiel/Hamburg
ELAG 2018, Prague
6.6.2018

2. Wikidata as a linking hub
Page 2

3. New qualifier “mapping relation type” (P4390)
Optionally qualify any external property relation by one of the SKOS
mapping relation types (exactMatch, closeMatch, narrowMatch, etc.)
Page 3

4. Usage by relation type and by external-id property
https://www.wikidata.org/wiki/Wikidata:Database_reports/Constraint_violations/P4390
Page 4

5. Page 5
Thanks for listening!
Joachim Neubert
ZBW – Leibniz Information Centre for Economics
j.neubert@zbw.eu
https://www.wikidata.org/wiki/Property:P4390
http://zbw.eu/labs
https://github.com/zbw/sparql-queries/tree/master/wikidata
http://ceur-ws.org/Vol-1937/paper2.pdf