Michael DeBellis
Using SPARQL to Delete Duplicate Instances
Describes developing a query to delete objects that have different IRIs but are essentially duplicates.
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Michael DeBellis
Nov 21, 20238 min read
Puns in the Web Ontology Language (OWL): Why We Need Them and How to Use Them
The reasons that puns are needed in the Web Ontology Language (OWL) and some discussion of how to use them
524 views0 comments
Michael DeBellis
Nov 9, 20232 min read
One Good Hack Deserves Another
SPARQL query to delete asserted property values on datatype super properties
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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
Jan 10, 20236 min read
Synonyms, IRIs, and Labels in OWL and SKOS
Basic concepts related to synonyms in the Web Ontology Language (OWL), Simple Knowledge Organization System (SKOS), and Protégé.
821 views0 comments
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...
999 views0 comments
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
562 views0 comments
Michael DeBellis
Apr 26, 20211 min read
Semtech 2021 Workshop
Presentations from the Semtech 2021 Semantic Web workshop held at the Indian Statistical Institute.
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