The Convention-based Ontology Generation System (COGS) gives you a powerful, patterns-based way to build ontologies that enables a clean separation of concerns and gives you full control over markup for enjoyable, agile development. COGS includes many features that enable fast, Test Driven Development for publishing sophisticated models in a variety of formats.
COGS is for domain experts and groups who value ease of collaboration and low technical barriers for participation.
- SDTL - Structured Data Transformation Language
- DDI Lifecycle 4.0
JSON, XML, and RDF/JSON-LD are first-class authoritative COGS serialization families. OWL describes the RDF ontology; Turtle and JSON-LD encode RDF graphs. The authoritative COGS outputs are:
- XML Schema 1.0 and JSON Schema 2020-12
- OWL ontology in W3C Turtle and JSON-LD
- JSON-LD context for RDF instances
- SHACL Core/SPARQL shapes for closed RDF instance validation
- UML/XMI in normative and EA flavors
- C# class library with JSON, XML, and RDF graph serialization
- Python class package with JSON and XML serialization
- TypeScript class package with JSON and XML serialization
COGS also publishes the projections LinkML, DCTAP, GraphQL schema language, Graphviz/DOT, and Sphinx documentation.
COGS can also create model changelogs in Markdown and PDF, with an editable Typst source. Comparison can be done via directory paths or git commits.
COGS runs on Windows, Linux, and macOS on .NET 10.
Quick starts, Modelers Guide, and technical documentation is available.
COGS can be installed as a dotnet global tool from nuget
dotnet tool install -g cogs
COGS is licensed under the MIT license.
