A Classification as a Source for a Thesaurus: the bibliographic Classification of H. E. Bliss as a Source of Thesaurus Terms and Structure

The second edition of the Bibliographic Classification of H. E. Bliss (BC2), being prepared under the editorship of Jack Mills, Vanda Broughton and others, is a rich source of structure and terminology for thesauri covering different subject fields. The new edition employs facet analysis and is thesaurus‐compatible. A number of facet‐based thesauri have drawn upon Bliss for terms and relationships. In two of these thesauri the Bliss Classification was the source of both systematic and alphabetical displays. The DHSS‐DATA thesaurus, published by the United Kingdom Department of Health and Social Security, provides controlled terms and Bliss class numbers for indexing and searching the DHSS‐DATA database. The ECOT thesaurus (Educational courses and occupations thesaurus) prepared for the Department of Education and Science, uses the software designed for the British Standards Institution ROOT thesaurus to generate an alphabetical display from the systematic display derived from the Bliss schedules. Problems, benefits, and future prospects of Bliss‐based thesaurus construction are discussed.