Michael DeBellis
Using SKOS to Define Mappings
Describes ways to use the Simple Knowledge Organization System (SKOS) to define mappings from one Concept Scheme to another.
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Michael DeBellis
- Dec 22, 2022
- 4 min
IRI Mappings in Protégé and Web Protégé
When you load an ontology from Desktop Protégé to Web Protégé defaults related to IRIs aren't what you would expect. Tells how to set them.
283 views0 comments
Michael DeBellis
- Nov 17, 2022
- 3 min
UN Sustainable Development Goals Ontology
Case study of how Cellfie and SPARQL can automate developing an ontology to model the UN Sustainable Development Goals.
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Michael DeBellis
- May 30, 2022
- 3 min
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
1,100 views1 comment
Michael DeBellis
- May 5, 2022
- 1 min
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...
673 views0 comments
Michael DeBellis
- Jan 25, 2022
- 2 min
Testing and Debugging Ontologies
Best practices for creating and using individuals as test data for OWL ontologies
383 views0 comments
Michael DeBellis
- Jan 4, 2022
- 2 min
Making UUIDs Easier to Use With Prefixes
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...
218 views0 comments
Michael DeBellis
- Dec 1, 2021
- 3 min
Using SPARQL to Refactor User Names to UUIDs
Use SPARQL to convert user supplied IRI names to UUIDs
325 views0 comments
Michael DeBellis
- Oct 19, 2021
- 2 min
An Agile Approach to Knowledge Graph Development
A paper on the CODO knowledge graph that captures epidemiological and contact tracing data about the Covid-19 pandemic.
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Michael DeBellis
- Oct 7, 2021
- 2 min
The People_Example Ontology
I'm working on an article where I provide an overview of the various semantic web technologies such as OWL, SWRL, SPARQL, and SHACL. As...
2,858 views0 comments
Michael DeBellis
- Sep 30, 2021
- 1 min
New Protégé Pizza Tutorial
New version of the Pizza Tutorial for Protégé. Consistent with latest Protégé UI and new sections for SWRL, SPARQL, and SHACL.
15,351 views12 comments
Michael DeBellis
- Apr 26, 2021
- 1 min
Semtech 2021 Workshop
Presentations from the Semtech 2021 Semantic Web workshop held at the Indian Statistical Institute.
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Michael DeBellis
- Dec 7, 2020
- 4 min
What's in a Name? IRIs, Labels, and UUIDs
In Protégé and OWL an entity name can refer to the last part of the IRI or the label
1,208 views2 comments
Michael DeBellis
- Aug 7, 2020
- 2 min
CODO: An Ontology for Collection and Analysis of Covid-19 Data
CODO is an ontology to provide semantics to data on the Covid-19 pandemic
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