SWEO Community Project: Linking Open Data on the Semantic Web
Common Vocabularies / Ontologies / Micromodels
This page collects links to vocabularies, ontologies and micromodels that are commonly used to publish RDF data on the Semantic Web.
In order to make it easier for client applications to do something useful with your data, it is recommended to use terms from these vocabularies wherever they fit.
The page is part of the community project wiki:SweoIG/TaskForces/CommunityProjects/LinkingOpenData
Commonly used Vocabularies
FOAF Friend-of-a-Friend
SIOC Semantically-Interlinked Online Communities
DOAP Description of a Project
Dublin Core Defines general metadata attributes.
SKOS Simple Knowledge Organization System
SKOS DataZone list of vocabularies available in SKOS schema
Blog post listing the 100 most common RDF namespaces (August 2006)
The paper Ding, Finin: Characterizing the Semantic Web on the Web gives an overview about which vocabularies were used in May 2006.
Vocabulary Listings
There are several sites collecting RDF vocabularies and OWL ontologies. Try to reuse these before inventing something new.
Vocabulary Mappings
Some vocabularies provide different URIs to describe equivalent (or more / less precise) resources. It seems important to define mappings between them.
Micromodels / Microformats
Microformats define schemata for embedding data into HTML pages. Data that is published using a microformat can be transformed to RDF using GRDDL. See Microformat FAQs for RDF Fans
Linking Properties
This section collects poposals on which properties to use to set links between different entities.
ESW Wiki: PropertiesForLinking
Alexandre Passant: FOAF geonames and more plus answers by different people.
owl:sameAs as the standard way of saying that two data items in different data sources are about the same resource.
Bernard Vatant: Ideas for a Linking Vocabulary