Uniform Resource Identifier

... providing guidance for people who want to publish their data as linked data. One of the things that we need to provide guidance about is how to publish linked data that changes over time.

The LDSR represents a reason-able view grouping several of the central datasets of the Linking Open Data (LOD) W3C SWEO community project.

Web IDs are world-wide "strong identifiers" that you and your software can use to precisely identify and distinguish concepts, even if they share the same names.

to be able to model the relationships between prominent web ontologies and map them onto equivalent Freebase types and topics

Semanlink is a personal information management system based on RDF. It lets you add tags, as well as other RDF metadata, to files, bookmarks and short text notes that it allows to write. Providing a simple way to organize the tags in a graph, it allows you to incrementally define the vocabulary you use when annotating documents with metadata. Semanlink, which is built with Jena, has been presented at the Jena User Conference, organized by HP Labs (May 10th and 11th 2006, Bristol, UK). Here is the presentation paper.

RDFex addresses a shortcoming of the OWL imports mechanism: owl:imports has an "all-or-nothing" philosophy, i.e. all triples from the target namespace are being added to the importing model. This often leads to models that are cluttered up with unnecessary definitions, making them more complex than necessary. In some cases, you may not even agree with the design assumptions made by the original ontology, but you still want to re-use the same identifiers.

SPARQLpedia is a public repository of SPARQL queries. Anyone can submit new SPARQL queries. Anyone can search the repository for queries that mention a given namespace, certain resource URIs or have been submitted by certain users.