SKOS Simple Knowledge Organization System Reference
This document defines the Simple Knowledge Organization System (SKOS), a common data model for sharing and linking knowledge organization systems via the Web.
SPARQL 1.1 Query Language
This specification defines the syntax and semantics of the SPARQL query language for RDF.
RDF Schema 1.1
RDF Schema provides a data-modelling vocabulary for RDF data and is an extension of the basic RDF vocabulary.
RDF 1.1 Concepts and Abstract Syntax
RDF 1.1 Concepts and Abstract Syntax defines an abstract syntax (a data model) which serves to link all RDF-based languages and specifications.
OntoUML Tooling
The OntoUML Community Portal’s tooling section provides comprehensive information about development environments, editors, and utilities for building domain ontologies using the UFO-based OntoUML modeling language.
OntoUML Vocabulary
The OntoUML Vocabulary is a Web Ontology Language (OWL) implementation of the OntoUML Metamodel. T