Liferay

The Liferay Linked Data Module developed by IMC - Information Management and Communications uses D2R to make online communities based on Liferay, as well as the content they produce, available as Linked Data, enabling it to be reused and referenced elsewhere.

It maps Liferay’s database to existing vocabularies such as FOAF, SIOC, Dublin Core, the Tagging ontology and MOAT.

SIOC and FOAF describe user, community and content information and Dublin Core covers metadata aspects in virtually every domain.

Liferay tags are mapped, given URIs and disambiguated, making available data pertaining not only to tags and taggings but also tag meanings, using the MOAT vocabulary.