Updating thesaurus standards: Structured vocabularies for information recovery in the digital environment

International projects for reforming and broadening the scope of the current technical guidelines and standards on thesauri are presented. The aims of these projects are to recast the existing standards and guidelines, to adapt them to the new digital environment, and to specify their relationship with other vocabulary control tools, making integration easier. These new standards are an excellent opportunity to enhance the visibility of the great corpus of knowledge and experience that information and documentation professionals have accumulated regarding knowledge representation and organization