Flawless Semantic Modeling in OWL and SKOS - The Practice

A Talk by Panos Alexopoulos
Head of Ontology, Textkernel

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About this talk

Hands-on experience of developing a semantic model in OWL and SKOS, with progressive exercises designed to illustrate pitfalls we need to avoid and dilemmas we need to break during the modeling process.

Based on the O'Reilly book "Semantic Modeling for Data"

<img class="b-lazy img-fluid" height="" src="http://sdmbook.panosalexopoulos.com/wp-content/uploads/2020/08/SMD_Cover.jpg" width="300">

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Key Topics

  • When to use SKOS versus when to use OWL
  • When to model an entity as a class versus when to model it as an individual
  • How to properly model subclasses, parts and other semantic relations
  • How to choose meaningful names for the model’s elements
  • How to document assumptions and design decisions
  • How to deal with vagueness

Target Audience

  • Knowledge engineers
  • Ontologists
  • Taxonomists
  • Data practitioners who develop semantic data models
  • Technical leaders who want hands-on semantic modeling experience


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Session outline

Hands-on experience with OWL, SKOS, and Protege


This class will be highly collaborative and interactive.

For the modeling exercises we will work on ​Protege (standalone and/or web version)

All the exercises and solutions will be made available to the attendees after the conclusion of the masterclass.


Beginner - Intermediate

Prerequisite Knowledge

Panos Alexopoulos

Working since 2006 at the intersection of data, semantics, and software, contributing to building intelligent systems that deliver value to business and society. Currently Head of Ontology at Textkernel BV, leading a team of data professionals in developing and delivering a large cross-lingual Knowledge Graph in the HR and Recruitment domain. Author of the book "Semantic Modeling for Data - Avoiding Pitfalls and Breaking Dilemmas" (O'Reilly, 2020)

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