7.2 Mapped Relationships
Relationships within the DDccan be dymamically altered through the linking of thesauri and subject heading lists to the system. The linking of other thesauri enriches the vocabulary in the DDC and provides an alternative view within the general organizational framework of the DDC. A mapped thesaurus enables the DDC to offer domain-specific vocabulary and relationships to the specialist. The specialist use the DDC's and knowledge framework for the exploration interdisciplinary or tangent topics Olson Ward (1998) are experimenting with mapping A Women's Thesaurus to the DDC to overlay the relationships found in women's studies on the existing DDC structure. Iyer and Giguere (1995) have proposed seven relationship for the linking of the American Mathematics Society Mathematics Subject Classification to the DDC
Exact matches,
Specific to general,
General to specific,
Many to one,
Cyclic mapping strategies
No matches, and
Specific and broad class mapping
In conjunction with ocLc'scoRc (Cooperative online Resource catalog) project, Vizine Goetz (1999) has developed various mapping strategies for Library of Congress subject Headings (CSH), along with assessments of the of association between source and target terms The strength of the association varies depending upon the method used to link class numbers with headings