Gist is both a free reusable asset that you can use as the basis for your ontological work. It is also the distillation of a decade worth of ontological work at the enterprise level.
We've prepared a series of brief tutorials each of which describes some aspect of gist. Some of the early ones focus more on what gist is, and how to use it, as we get deeper in there will be a lot of commentary on why gist is the way it is.
gist Council Videos
- gist Council: December 2022 - gist/BFO Comparison - Presented by Dylan Abney
- gist Council: August 2022 - Introduction Pt. 3 - Presented by Michael Uschold
- gist Council: July 2022 - Introduction Pt. 2 - Presented by Michael Uschold
- gist Council: June 2022 - Introduction Pt. 1 - Presented by Michael Uschold
- gist Council: April 2022 - Documentation - Presented by Peter Winstanley
- gist Council: January 2022 - Modeling Categories Pt. II - Presented by Rebecca Younes
- gist Council: November 2021 - Modeling Categories Pt. I - Presented by Rebecca Younes
- gist Council: October 2021 - RDF Visualizations - Presented by Peter Winstanley and Boris Pelakh
- gist Council: September 2, 2021 - gist 10.0.0 - Presented by Rebecca Younes
- gist Council: May 6, 2021 - Does Anybody Use That? - Presented by Dan Carey
- gist Council: April 1, 2021 - A Class for ComplexRelationship - Presented by Peter Winstanley
- gist Council: March 4, 2021 - Using gist ID:Class - Presented by Dan Carey
- gist Council: January 7, 2021 - Documentation - Presented by Peter Winstanley
- gist Council: December 3, 2020 - Everyday Modeling Challenges Part 1 - Presented by Michael Uschold
- gist Council: November 5, 2020 - Entity/Identity Resolution
- gist Council: October 1, 2020 - SemOps: DevOps for Semantic Systems - Mark Wallace gives a presentation on SemOps.
- gist Council: September 3, 2020 -Date Match in Sparql - Steve Steward discusses what you can & can't do in SPARQL 1.1 and what's coming.
- gist Council: August 6, 2020 - Working with Dates in gist, OWL and RDF - Michael Uschold explains the capabilities and shortcomings of working with dates.
- gist Council: June 4, 2020 - De-Modularize gist - Mark Wallace discusses the proposition of de-modularizing gist.
- gist Council: May 7, 2020 - Events - Dave McComb goes into detail regarding Events in gist.
- gist Council: April 2, 2020 - Concept of Ownable - Dan Carey proposes an approach to the idea of Ownable in the retail version of gist.
- gist Council: March 5, 2020 - Change Management - Rebecca Younes reviews the gist change management and release process in addition to the 9.1.0 release and style guide.
- gist Council: February 13, 2020 - Events
- gist Council: January 2, 2020 - Musings on Mereology - Dave McComb discusses Mereology and the definition of gist:partOf
- See Older Videos by visiting our YouTube channel!
gist Tutorial Videos
- Grokking gist – In this tutorial we cover "getting your head around" gist.
- Covering Concepts & gist 9.0.0 - Dave McComb goes into detail on covering concepts in gist, in addition to important changes with the release of gist 9.0.0
- How gist Evolves - In this video, Michael Uschold discusses how gist evolves, how we track changes, as well as ongoing issues and suggestions.
- How gist Marries Taxonomies & Ontologies – This video explores where an ontology leaves off and a taxonomy begins, when it comes to gist.
- Networks & the loT in gist - Dave McComb discusses how gist plays into networking and the Internet of Things.
- Using SKOS with gist – In this video, Dave McComb explains what SKOS is, why people use it, how it relates to gist, and how to convert an ontology from gist to SKOS.
- Optional Properties - This video offers debate and insight into dealing with optional and suggested property relations.
- Adding Temporality to Relationships – This video defines what a temporal relationship is, why it's necessary, and then explores how one would go about modeling it.
- Rights & Obligations - Turns out most of most business deal with the establishment, management and discharging of obligations.
- gist Composite Primitives - The core of gist are a dozen high level concepts that are mostly disjoint from each other. This tutorial covers what they are and why they have settled in the way they have.
- Approaching Addresses in gist – In this session, Dave McComb covers the gist approach to Addresses and how this handles most of the recurring problems people have with address designs. We take the position that addresses are not attributes of people or organizations but are first class objects in their own right. Many great things are made possible y this simple re-conceptualization.
- Namespaces in gist – In this video, Dave McComb discusses "hash versus slash". We've adopted conventions for namespaces that are helpful to know if you're using gist, and might be reasonable to emulate when you create your own ontologies.
- gist Governance – This video discusses governance, specifically in terms of how to handle governance issues when they arise.
- Meta Level in gist – In this video, Dave explains meta levels in gist.
- Quantities, Magnitudes, and Units & Measures in gist – This video explores how quantities, magnitudes, units, and measures are modeled in gist. We have adopted a simple but complete version of the Society International system of measures, which base all units in seven primitives (weight, distance, time duration, temperature, electric current, luminescence and of course molar quantity (basis for Avagadro's number for those who remember their Chemistry). We've extended it with ratios (speed) products (force) currency and count. all measures in gist are what we call magnitudes, and because of their tight coupling with gist Units we are able to support any arbitrary unit conversion.
- gist Disjoints – This video explores disjoints in OWL, why most ontologies don’t have disjoints, the power of disjoints in finding logical errors, how disjoints can go bad, and what we’ve implemented in gist.
- gist Identifiers – All information systems are full of identifiers. Many large implementation projects have come a cropper attempting to convert an organization to some sort of “universal ID.” Skillful resolution of the issues that come with use of identifiers is a key challenge in system building. In this installment of gist, Dave reviews the three options that semantics provides for modeling and using identifiers (URI, datatype Property and first class object) describes the gist module for IDs and outlines how and when to use each strategy
- Getting Started with gist 7 – We cover three different ways to download and start working with gist.