Role and Purpose

XKOS leverages the Simple Knowledge Organization System (SKOS) for managing statistical classifications and concept management systems, since SKOS is widely used. LOD is used to create Web artifacts that machines can interpret, so publishing machine-readable statistical classifications and other concept management systems as SKOS instances is desired. The XKOS developers found that SKOS was insufficient for the problem. No aspect of SKOS was found to be wrong, just incomplete. Therefore, an extension to SKOS, called XKOS, is proposed.

XKOS extends SKOS for the needs of statistical classifications. It does so in two main directions. First, it defines a number of terms that enable the representation of statistical classifications with their structure and textual properties, as well as the relations between classifications. Second, it refines SKOS semantic properties to allow the use of more specific relations between concepts. Those specific relations can be used for the representation of classifications or for any other case where SKOS is employed. XKOS adds the extensions that are desirable to meet the requirements of the statistical community.

SPECIFICATION

Development Resources

Discussion forum
- Subscription email address: ddi-rdf-vocabulary+subscribe@googlegroups.com
- Address for sending an email to the list: ddi-rdf-vocabulary@googlegroups.com
GitHub repository (revision control system)
Issue tracker

XKOS page on DDI Alliance site

Major Activities

Version 1.2 published 2019-06-20
Version 1.2 public review (extended) 2017

Development Group Members

Member	Role
Franck Cotton	Lead Editor
Thomas Francart	Editor
Flavio Rizzolo	Contributor
Wendy Thomas	TC support

XKOS - Extended Knowledge Organization System