THE DEWEY DECIMAL CLASSIFICATION - OCLC

Mitchell and Vizine-Goetz: The Dewey Decimal Classificationthe co-occurrence of the three in Library of Congress bibliographic records. TheNational Library of Sweden has developed a mapping between SAB, the Swedishclassification system, and the DDC as part of an exploration to consider a Swedishtranslation of the DDC 48 .Several concordances between the Universal Decimal Classification (UDC) and the DDChave been developed. For example, the Czech National Library has built a concordancebetween UDC and DDC for the purposes of collection assessment49 . McIlwaine andMitchell are experimenting with a concordance between the Class 2 Religion in the UDCand 200 Religion in the DDC as a method of presenting a chronological/regional view ofreligion in the DDC similar to the updated one found in the UDC 50 .APPLICATIONS AND RESEARCHThe DDC is perhaps most familiar to users as the classification portion (Arabic numeralspunctuated by a decimal point after the first three digits) of a call number used to labelphysical objects in libraries. The classification portion of a call number is onemanifestation of Dewey; the underlying DDC data and associated terminologies are usedfor a variety of applications beyond physical shelf location.The first and most well-known research effort to incorporate DDC data into an end userretrieval system was the DDC Online Project led by Markey 51 . Markey’s team built anexperimental online catalog, Dewey Online Catalog (DOC), that included data from theDDC schedules and Relative Index. The DOC system provided new subject searchingcapabilities not available in online catalogs, e.g., subject indexes enriched withterminology from the DDC schedules and Relative Index, and features to broaden orhttp://www.oclc.org/research/publications/library/2009/mitchell-dvg-elis.pdf Page 21 of 36.