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.
top of page
Search
Michael DeBellis
- Jan 10
- 6 min
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.
32 views0 comments
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.
51 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.
87 views0 comments
Michael DeBellis
- Sep 22, 2022
- 4 min
Book Review: Memory and the Computational Brain by Gallistel and King
Book review of Memory and the Computational Brain by Galliestel and King, it challenges the idea that all cognition is based on neurons.
47 views0 comments
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
696 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...
573 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
339 views0 comments
Michael DeBellis
- Jan 14, 2022
- 2 min
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...
369 views1 comment
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...
159 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
254 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.
412 views0 comments
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...
2,336 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.
12,585 views6 comments
Michael DeBellis
- Sep 9, 2021
- 2 min
Refactoring Names w SPARQL
This post shows how to use SPARQL to take user defined names in IRIs and use them to fill in the rdfs:label with an appropriately...
199 views0 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.
206 views0 comments
Michael DeBellis
- Feb 3, 2021
- 4 min
A Simple Measurement Vocabulary
Simple Web Ontology Language (OWL) vocabulary for measurements in units. Uses SWRL to compute orders and to transform units.
376 views0 comments
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
992 views1 comment
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
417 views0 comments
Michael DeBellis
- Jun 26, 2020
- 3 min
Drools vs. Pellet for SWRL rules
This explains the difference between using the Drools buttons at the bottom of the SWRLTab and using Pellet and why Pellet is usually better
1,008 views5 comments
bottom of page