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The State of the NDLTD Union Catalog. T. Hickey & T. Dehn, OCLC ETD 2003. The Catalog. OCLC harvests records Creates union catalog Union catalog is itself harvestable Metadata only – not the theses themselves. Capabilities. Harvesting OAI-PMH versions 1.1 and 2.0 Harvestable sets
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The State of the NDLTDUnion Catalog T. Hickey & T. Dehn, OCLC ETD 2003
The Catalog • OCLC harvests records • Creates union catalog • Union catalog is itself harvestable • Metadata only – not the theses themselves
Capabilities • Harvesting • OAI-PMH versions 1.1 and 2.0 • Harvestable sets • Sets by institution • Searching • SRU (Z39.50 on the Web) • VTLS • Virginia Tech Open Digital Library demo • Unicode support
Statistics • 19 Sources • 61,998 records • Probably some overlap • Adding 1-2 new sites/month
Metadata Formats • Dublin Core – All • ETDMS – 9 • MARC – 5
Record Counts • > 10,000 – OCLC_ETD, VTETD • > 5,000 – HKU, NSYSU, MIT • > 1,000 – UUdiva, LSU, CALTECH • > 500 – HUMBOLT, LMU • > 100 – NCSU, PHYSNET, PITT, VIENNA, DUETT, DRESDEN, WATERLOO • > 0-50 – USF, Laval, UBC
Future Plans • Better integration with WorldCat • E.g., De-duplication, FRBRization • Different sets? • Better searching (SRU/SRW) • Open to suggestions