We’ll Look At…:
We’ll Look At… Definitions - What is a thesaurus?
The importance of using a controlled vocabulary when creating metadata;
Options: the GCMD and GEMET;
Thesauri and controlled vocabulary repository at the National Library:
What is it?
Accessing the repository
Adding to the repository
Some definitions…:
Some definitions… There is a broad spectrum of controlled vocabularies, from simple lists to complex ontologies…
Authority files and code lists
Thesauri
Taxonomies
Ontologies
Why Use Controlled Vocabularies?:
Why Use Controlled Vocabularies?
Enables effective searching
Semantic interoperability
Multilingual support
Reduces error – quality control
Global Change Master Directory:
Global Change Master Directory The GeoConnections Discovery Portal thesaurus of choice is the Global Change Master Directory (GCMD) for theme and place keywords.
General Multilingual Environmental Thesaurus:
General Multilingual Environmental Thesaurus GEMET – supports 18 languages.
National Repository of Thesauri and Controlled Vocabularies:
National Repository of Thesauri and Controlled Vocabularies A number of thesauri and controlled vocabularies are registered with the National Library of Canada (NLC) and can be accessed at http://www.nlc-bnc.ca/8/4/r4-280-e.html.
Departments are encouraged to register standardized vocabularies that meet their particular requirements with the NLC.
The NLC Repository…:
The NLC Repository…
Controlled Vocabularies:
Controlled Vocabularies
Questions?