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ALCME: OAI at OCLC

ALCME: OAI at OCLC. Jeffrey A. Young OCLC Online Computer Library Center, Inc. Project community. Networked Digital Library of Theses and Dissertations (NDLTD) project Develop open-source applications for the creation and maintenance of a distributed catalog of theses and dissertations (ETD).

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ALCME: OAI at OCLC

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  1. ALCME: OAI at OCLC Jeffrey A. Young OCLC Online Computer Library Center, Inc.

  2. Project community • Networked Digital Library of Theses and Dissertations (NDLTD) project • Develop open-source applications for the creation and maintenance of a distributed catalog of theses and dissertations (ETD) Visit http://www.ndltd.org/ and http://purl.org/alcme/ FOR MORE INFO...

  3. Thesis Metadata Standard (TheMS) • Dublin Core-based, with additional elements from new namespaces • Resource Description Framework (RDF) based • Incorporates linking to a distributed name authority database

  4. NDLTD’s use of OAI • Distribution mechanism for thesis and dissertation records • Distribution mechanism for name authority metadata (proposed)

  5. OAI alpha-test collection • ETDCat: Thesis and dissertation records extracted from OCLC’s WorldCat database • Currently, a 100,000 record subset in Dublin Core format (~2 million total) • Eventually, will support NDLTD’s TheMS metadata format Visit http://purl.org/alcme/ FOR MORE INFO...

  6. Technical infrastructure • OAICat: an open-source OAI protocol implementation (Java Servlet web application) • OAIHarvester: an open-source OAI harvester (Java application) • Assuming there is a Java interface to your database engine, customization could be accomplished in a matter of a few hours

  7. Technical infrastructure (related) • Gwen/Pears: open-source database and search engine • MARC to Dublin Core converter (http server based on the crosswalk used in OCLC’s CORC service) • Extensible Open RDF (EOR): an open-source RDF toolkit (in development)

  8. Design approach • Open-source to avoid duplication of effort • Modular design for ease of maintenance • Use existing tools wherever possible, such as Java Servlets and XSLT • Easy to deploy • Easy to customize

  9. Development challenges • NDLTD’s TheMS format is based on the Resource Description Framework (RDF) • NDLTD’s TheMS format expects a linking mechanism for name authority data

  10. From here • Clean and release the OAIHarvester software for others to use • Prototype the NDLTD authority linking mechanism • Add TheMS format support to the thesis and dissertation repository (ETDCat) Contact me at: jyoung@oclc.org FOR MORE INFO...

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