PPOL: Public Policy

Introduction
1. Scope and purpose
The
Government of Canada Core Subject Thesaurus
(CST) is a bilingual thesaurus
consisting of terminology which represents all the fields treated in information resources of
the Government of Canada. The English version of the thesaurus includes 4792 terms, of
which 2173 are preferred terms and 2619 are non-preferred terms. All fields of knowledge
are represented in the CST, to varying degr
einology used in specific and limited disciplines.
The CST is In the Treasury Board
Standard on
Metadata
, the CST is identified as the preferred source of controlled vocabulary for that
purpose. Using the CST will help to reduce the duplication of effort in creating a variety of
controlled vocabularies in the Government of Canada, as well as increase the
interoperability of government web sites. Introduction
1. Scope and purpose
The
Government of Canada Core Subject Thesaurus
(CST) is a bilingual thesaurus

of the great variety of subjects covered by
the thesaurus. By design, the thesaurus does

developers in federal departments and agencies who must select controlled subject terms
to index Government of Canada Web resources. In the Treasury Board
CST has its origins in theSubject Thesaurus
of the Depository Services Program
(DSP) at Public Works and Government Services Canada. The Subject Thesaurus of the DSP was developed between May 1999 and February 2000 as a source of indexing terms for the Government of Canada Publications Database. In 2001, various projects for indexing information resources of the Government of Canada led to the creation of the
CST, by enlarging the scope of the
Subject Thesaurus. Between 2001 and 2004, the
Subject Thesaurus of the DSP was derived from the CST. In June 2006, Library and Archives Canada took over the responsibility of managing and updating the CST from the Depository Services Program.

The CST is managed and updated by Library and Archives Canada.