1. LOD Vocabularies
OC Working Group, 2012-05-16
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Copyright 2008 STI

2. Overview
• DublinCore
• FriendOfAFriend
• GoodRelations
• schema.org
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3. Domains overlap (approx.)
DC
FOAF
schema.org
Good
Relations
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4. Usage in the LOD cloud *)
FOAF DC
G
R
*)http://stats.lod2.eu/vocabularies, 2012-04-23
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5. Usage on the Web *)
• Predicates
– http://purl.org/dc/terms/title 391 Mio Triples
– http://xmlns.com/foaf/0.1/primaryTopic 21 Mio Triples
– http://purl.org/goodrelations/v1#hasPriceSpecification 6 Mio Triples
– http://schema.org/Product/name 5 Mio Triples
• Classes
– http://xmlns.com/foaf/0.1/Person 62 Mio Triples
– http://purl.org/goodrelations/v1#Offering 6 Mio Triples
– http://schema.org/Product 5 Mio Triples
– http://purl.org/dc/dcmitype/Text 3.5 Mio Triples
*) http://sindice.com, 2012-04-15
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6. Discussion
• When to use which vocabulary?
– schema.org vs FOAF
– schema.org vs DC
– schema.org vs GoodRelations
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