Épisodes

  • What's in a Triple?

    What's in a Triple?
    May 23 2025
    We discuss reification using the W3C draf recommendation RDF 1.2, modeling choices, and how the approach is similar to, and different from, edge properties in Labeled Property Graphs.

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    50 min
  • KGC-palooza!

    KGC-palooza!
    May 9 2025

    This week I was at the Knowledge Graph Conference, the biggest industry Graph AI conference out there! I spoke with Bob Metcalfe of network effect fame, Peter Crocker of Oxford Semantics, and a huge KGC crew of ontologists, technologists, and knowledge graph experts.


    Featuring:

    1. Bob Metcalfe
    2. Peter Crocker
    3. Mara Inglezakis Owens
    4. Margaret Warren
    5. Pete Rivett
    6. Hande McGinty
    7. Tom Plasterer
    8. Ora Lassila
    9. Keith Corbett
    10. Elisa Kendall
    11. Larry Swanson
    12. Deborah McGuinness

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    50 min
  • What's so Basic about BFO?

    What's so Basic about BFO?
    May 6 2025

    We continue our mini series on upper level ontologies with an episode on the Basic Formal Ontology, or BFO. John Beverley of University at Buffalo joins us. John is the current steward of BFO, and works with its founder Barry Smith on its use in domain applications.


    For more information about BFO, visit their github page at https://github.com/BFO-ontology/BFO-2020.

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    1 h et 10 min
  • Upper Ontologies: gist

    Upper Ontologies: gist
    Apr 12 2025
    This week we discuss the upper level ontology gist with its creator, Dave McComb.

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    49 min
  • What Does Medicine Mean?

    What Does Medicine Mean?
    Apr 6 2025
    Chime Ogbuji joins me to talk about the role of medical informatics in knowledge graphs and semantics, all the way from MYCIN and GALEN to today.

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    53 min
  • Careful with that Predicate, Eugene!

    Careful with that Predicate, Eugene!
    Mar 26 2025
    Properties are the workhorse of ontologies, where semantics really happen. So be careful when you make a new one!

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    22 min
  • What's So Hard to Understand?

    What's So Hard to Understand?
    Mar 20 2025

    Keith Corbett and Grace Roessling join us for a discussion about learning RDF, OWL, and knowledge graphs.


    Keith: For nearly 50 years, Keith has been a technical communicator, data modeler, and knowledge engineer. Then and now, he has explored the intersections of deterministic AI, hypertext, and graph data.


    Grace: Grace is a PhD candidate cognitive science at Rensselaer Polytechnic Institute. in the Perception and Action lab with Dr. Brett Fajen. Her dissertation is focused on how humans combine vision and spatial knowledge to guide high speed steering.


    References

    1. Larkin & Simon (1987) -- list vs. diagrammatic representations (https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1551-6708.1987.tb00863.x)
    2. Temple Grandin (2016) -- visual thinking, pattern mathematical thinking, and verbal/auditory thinking (https://www.jstor.org/stable/26407108?seq=3)

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    1 h et 19 min
  • What's an Ontology?

    What's an Ontology?
    Mar 12 2025

    In this episode, Deborah McGuinness and I discuss ontologies: what's in them, what they're used for, what makes them good, and how to go about making them.


    Notes and links:

    • Deborah McGuinness: https://tw.rpi.edu/person/Deborah_L_McGuinness
    • The Ontology Spectrum: https://www.researchgate.net/publication/221024668_Ontologies_Come_of_Age
    • Schemas vs ontologies: https://www.w3.org/wiki/SchemaVsOntology Ontology and database schema: What's the difference?
    • Ontologies 101: https://protege.stanford.edu/publications/ontology_development/ontology101.pdf
    • Ontology Engineering: https://ieeexplore.ieee.org/book/8701593

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    59 min