Describes developing a query to delete objects that have different IRIs but are essentially duplicates.

SPARQL query to delete asserted property values on datatype super properties

Case study of how Cellfie and SPARQL can automate developing an ontology to model the UN Sustainable Development Goals.

Discusses the pros and cons of property graphs (Neo4J and Cypher) contrasted with the Semantic Web stack: RDF, OWL, SPARQL, SHACL, SWRL

I recently wrote a paper with Robert Neches who used to be my boss at the Information Sciences Institute (ISI). When I work with...

In a previous blog post I discussed the difference between user supplied names for IRIs and UUIDs. I want to share a tip that Jim Balhoff...

Use SPARQL to convert user supplied IRI names to UUIDs

New version of the Pizza Tutorial for Protégé. Consistent with latest Protégé UI and new sections for SWRL, SPARQL, and SHACL.

Presentations from the Semtech 2021 Semantic Web workshop held at the Indian Statistical Institute.