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Using ChatGPT to Generate English Labels for a Spanish Ontology
I've been using ChatGPT to help with various kinds of analysis and coding tasks. Today I had the problem of generating English labels for...
Michael DeBellis
Nov 2, 20245 min read
110 views
0 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
226 views
0 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
712 views
0 comments


One Good Hack Deserves Another
SPARQL query to delete asserted property values on datatype super properties
Michael DeBellis
Nov 9, 20232 min read
47 views
0 comments

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
238 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
850 views
1 comment


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
1,426 views
2 comments
New Version of Protégé!
New version of Protégé rocks!
Michael DeBellis
Feb 28, 20232 min read
930 views
2 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
1,408 views
1 comment

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
974 views
0 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
1,743 views
1 comment

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
463 views
0 comments


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
2,672 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
687 views
0 comments


Memory Management with Protégé
A common problem that Protégé users encounter when they start working with large ontologies is running out of memory, which results in an...
Michael DeBellis
Jan 14, 20222 min read
965 views
2 comments


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
1,211 views
0 comments


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
596 views
0 comments

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.
Michael DeBellis
Oct 19, 20212 min read
579 views
0 comments

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...
Michael DeBellis
Oct 7, 20212 min read
6,167 views
8 comments


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.
Michael DeBellis
Sep 30, 20213 min read
32,147 views
18 comments
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