Michael DeBellis
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.
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Michael DeBellis
- May 30
- 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
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Michael DeBellis
- May 5
- 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...
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Michael DeBellis
- Jan 25
- 2 min
Testing and Debugging Ontologies
Best practices for creating and using individuals as test data for OWL ontologies
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Michael DeBellis
- Jan 14
- 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...
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Michael DeBellis
- Jan 4
- 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...
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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
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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...
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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.
9,722 views4 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...
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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
- 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.
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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
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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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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
743 views2 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
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Michael DeBellis
- Oct 15, 2019
- 2 min
OWL Best Practices: Implementing N-ary Relations
How to implement N-ary relations with additional classes in OWL
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Michael DeBellis
- Oct 15, 2019
- 3 min
OWL Best Practices: Using Enumerated Classes to Define Ordered Values
Describes a design pattern for representing qualitative values (e.g., low, medium, high) as an enumerated class and transitive properties
784 views1 comment
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
1,240 views0 comments