RDFS | MichaelDeBellis

Michael DeBellis

Apr 93 min read

Using SPARQL to Delete Duplicate Instances

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

Michael DeBellis

Nov 9, 20232 min read

One Good Hack Deserves Another

SPARQL query to delete asserted property values on datatype super properties

Michael DeBellis

Oct 25, 20233 min read

The DaanMatch System: A Knowledge Graph linking NGOs with UN Sustainable Development Goals

The DaanMatch project and how knowledge graphs and NLP were used to facilitate linking NGOs with the UN Sustainable Development Goals

Michael DeBellis

Jun 26, 20231 min read

YouTube Videos for Protégé Tutorial

Link to a YouTube playlist that takes you through some basic steps in Protégé

1,059 views2 comments

Michael DeBellis

Jan 10, 20236 min read

Using SKOS to Define Mappings

Describes ways to use the Simple Knowledge Organization System (SKOS) to define mappings from one Concept Scheme to another.

1,190 views1 comment

Michael DeBellis

May 30, 20223 min read

Semantic Web vs. Property Graphs

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

2,375 views1 comment

Michael DeBellis

May 5, 20221 min read

Knowledge Representation and the Semantic Web

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

Michael DeBellis

Dec 1, 20213 min read

Using SPARQL to Refactor User Names to UUIDs

Use SPARQL to convert user supplied IRI names to UUIDs

Michael DeBellis

Apr 26, 20211 min read

Semtech 2021 Workshop

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