Towards a Norwegian general thesaurus? Unni Knutsen, Humanities and Social Sciences Library Mari Lundevall, Science Library

Subject indexing and classification ReportReport from working group (2010): Lack of coordination across (and within) faculties: –Uncontrolled index terms, controlled index terms, two thesauri: Humord (humanities and social sciences) and MESH –7 different classification schemes (including DDC and NLM Classification) Resource constraints

Recommendations Use established subject indexing systems Extend Humord to include most of the subject areas in the library –In addition: MESH Do away with in-house classification schemes, use DDC and NLM Classification

More about Humord 1.A thesaurus (humanities and social sciences) – concepts 2.In addition the name of a joint indexing activity within the framework of the shared catalogue – BIBSYS –Cooperation and reuse of indexing data –Consistent use of indexing terms based on common indexing rules

National Library of Norway Report from working group:Report –Various in-house subject indexing systems –Lack of coordination –Lack of standardized subject indexing systems Tested data from various sources. Conclusion: Use of Humord gave the best result

So we joined forces… The University of Oslo Library received funds for 2014 to: 1.Participate in a study with the National Library to explore the feasibility of developing a more general, national thesaurus based on Humord and the controlled vocabulary for natural sciences and mathematics 2.Develop methods of mapping from Humord to WebDewey

Realfagstermer Controlled vocabulary for natural sciences and mathematics concepts –Synonym control –Related terms –English (10%), some Latin –Subject strings

Mapping attempts Target: the on-going Norwegian DDC- translation 500-group, Computer assisted direct matching: Mapping suggestions based on string matching from our terms to DDC captions Co-occurrence mapping: Mapping suggestions based on co-existing DDC and subject terms in catalogue records

Term in source vocabulary Term in target vocabulary μmapperExample