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The Turing/Church Proofs: How Logicians Created Computer Science
12/27/24. When I first published this I got some of the details wrong. Specifically my discussion of countable and uncountable infinite...

Michael DeBellis
Jul 11, 20249 min read
193 views
2 comments


Using SPARQL to Delete Duplicate Instances
Describes developing a query to delete objects that have different IRIs but are essentially duplicates.

Michael DeBellis
Apr 9, 20243 min read
246 views
1 comment


Using an LLM to help build ontologies: The Basic Formal Ontology (BFO) Assistant
Using the Open AI Assistant tool to create an LLM enabled assistant to using the Basic Formal Ontology (BFO)

Michael DeBellis
Feb 1, 20241 min read
681 views
4 comments


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

Michael DeBellis
Nov 21, 20238 min read
765 views
1 comment


One Good Hack Deserves Another
SPARQL query to delete asserted property values on datatype super properties

Michael DeBellis
Nov 9, 20232 min read
50 views
1 comment


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
Oct 25, 20233 min read
240 views
0 comments


Using OWL Models to Bring Rigor to the "Soft" Sciences
Examples of using the Web Ontology Language to rigorously define theories in the social sciences

Michael DeBellis
Oct 24, 20234 min read
169 views
0 comments


Creating a Custom Rules View Tab
Note: There was a problem with the link to the PDF for the tutorial below. It worked for me because I owned the file but for others since...

Michael DeBellis
Aug 28, 20232 min read
898 views
2 comments


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

Michael DeBellis
Jun 26, 20231 min read
1,504 views
3 comments
New Version of Protégé!
New version of Protégé rocks!

Michael DeBellis
Feb 28, 20232 min read
967 views
3 comments


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

Michael DeBellis
Jan 10, 20236 min read
1,467 views
2 comments


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.

Michael DeBellis
Jan 10, 20236 min read
998 views
2 comments


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.

Michael DeBellis
Dec 22, 20224 min read
1,776 views
2 comments


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

Michael DeBellis
Nov 17, 20223 min read
469 views
1 comment


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

Michael DeBellis
May 30, 20223 min read
2,726 views
1 comment


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
May 5, 20221 min read
1,161 views
1 comment


Testing and Debugging Ontologies
Best practices for creating and using individuals as test data for OWL ontologies

Michael DeBellis
Jan 25, 20222 min read
699 views
1 comment


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...

Michael DeBellis
Jan 4, 20222 min read
1,270 views
1 comment


Using SPARQL to Refactor User Names to UUIDs
Use SPARQL to convert user supplied IRI names to UUIDs

Michael DeBellis
Dec 1, 20213 min read
605 views
1 comment
Semtech 2021 Workshop
Presentations from the Semtech 2021 Semantic Web workshop held at the Indian Statistical Institute.

Michael DeBellis
Apr 26, 20211 min read
276 views
1 comment
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