Simple Knowledge Operating System (SKOS)

Definition:

The Simple Knowledge Organization System (SKOS) is a common data model for knowledge organization systems such as thesauri, classification schemes, subject heading systems and taxonomies. Using SKOS, a knowledge organization system can be expressed as machine-readable data. It can then be exchanged between computer applications and published in a machine-readable format in the Web.
Source: https://www.w3.org/TR/2009/REC-skos-reference-20090818/ https://www.w3.org/2004/02/skos/

Commentary: