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Michael DeBellis
- Jan 10
- 6 min
Using SKOS to Define Mappings
Describes ways to use the Simple Knowledge Organization System (SKOS) to define mappings from one Concept Scheme to another.
284 views0 comments
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.
222 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.
284 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.
177 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
1,101 views1 comment
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 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...
504 views2 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.
452 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...
2,859 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.
223 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.
413 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
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
467 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
1,213 views5 comments
Michael DeBellis
- Oct 16, 2019
- 3 min
Some Best Practices for New Protege Users
Collection of blog posts that describe best practices and tips for new users of Protege, OWL, and SWRL
1,336 views0 comments
Michael DeBellis
- Oct 10, 2019
- 2 min
OWL Best Practices: Some Theoretical Basics
Overview of the theory behind OWL as well as how OWL relates to other CS paradigms such as OOP and relational DBs
1,867 views0 comments
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