Information technology — Top-level ontologies (TLO) — Part 1: Requirements (Adopted ISO/IEC 21838-1:2021, first edition, 2021-08)
Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC.
For brevity, this Standard will be referred to as CSA ISO/IEC 21838-1 throughout.
The International Standard was reviewed by the CSA TCIT under the jurisdiction of the CSA Strategic Steering Committee on Information and Communications Technology and deemed acceptable for use in Canada. This Standard has been formally approved, without modification, by the Technical Committee and has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
This document specifies required characteristics of a domain-neutral top-level ontology (TLO) that can be used in tandem with domain ontologies at lower levels to support data exchange, retrieval, discovery, integration and analysis.
If an ontology is to provide the overarching ontology content that will promote interoperability of domain ontologies and thereby support the design and use of purpose-built ontology suites, then it needs to satisfy certain requirements. This document specifies these requirements. It also supports a variety of other goals related to the achievement of semantic interoperability, for example, as concerns legacy ontologies developed using heterogeneous upper-level categories, where a coherently designed TLO can provide a target for coordinated re-engineering.
This document specifies the characteristics an ontology needs to possess to support the goals of exchange, retrieval, discovery, integration and analysis of data by computer systems.
The following are within the scope of this document
— Specification of the requirements an ontology needs to satisfy if it is to serve as a top-level hub ontology.
— Specification of the relations between a top-level ontology and domain ontologies.
— Specification of the role played by the terms in a top-level ontology in the formulation of definitions and axioms in ontologies at lower levels.
The following are outside the scope of this document:
— Specification of ontology languages, including the languages OWL 2 and CL, used in ontology development with standard model-theoretic semantics.
— Specification of methods for reasoning with ontologies.
— Specification of translators between notations of ontologies developed in different ontology languages.
— Specification of rules governing the use of IRIs as permanent identifiers for ontology terms.
— Specification of the principles of ontology maintenance and versioning.
— Specification of how ontologies can be used in the tagging or
annotation of data.