NewsML-G2 2.21 Knowledge Item XML Schema, document version 1 Date of creation/approval of this XML Schema version: 2015-06-03 Any changes applied to this version of the XML Schema can be found at http://dev.iptc.org/G2-Approved-Changes Date of creation of this XML Schema document version: 2015-06-19 Schema design created for the IPTC in 2008 by Jay Cousins, RivCom Ltd (jay.cousins@rivcom.com), Ulf Wingstedt, CNet Svenska AB (ulf.wingstedt@cnet.se) Schema maintained for the IPTC by Michael Steidl (IPTC), prior to 2009 by Laurent Le Meur (AFP) An Item used for collating a set of concept definitions to form the physical representation of a controlled vocabulary Content Metadata for a Knowledge Item NewsML-G2 2.11: conceptSet was made a global declaration An unordered set of concepts A set of properties defining a concept NewsML-G2 2.17: schemeMeta added Metadata about a scheme conveyed by a Knowledge Item Extension point for provider-defined properties from other namespaces The URI which identifies the scheme The alias preferred by the schema authority Defines the authority controlling the scheme