V Link Open Ur Lina Nutshell


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Presentatie van Stefaan Renard (VUB) op VVBAD-studiedag Federated Search Engines, 22 januari 2010 in Erasmushogeschool Brussel

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V Link Open Ur Lina Nutshell

  1. 1. OpenURL in a nutshell Stefaan Renard University Library Vrije Universiteit Brussel
  2. 2. Contents <ul><li>Problem and solution </li></ul><ul><li>History </li></ul><ul><li>Version </li></ul><ul><li>What is an OpenURL </li></ul><ul><li>Inbound OpenURL links </li></ul><ul><li>The OpenURL QUERY </li></ul><ul><li>Outbound database specific links </li></ul><ul><li>Supported genres </li></ul>
  3. 3. Problem and solution <ul><li>Given (bibliographic) metadata, how does one generate relevant links for it and present them to the end-user? </li></ul><ul><li>Solution: a link generator that uses the OpenURL syntax </li></ul>
  4. 4. History <ul><li>The OpenURL is based upon the SFX research work of Herbert Van de Sompel and his team (Ghent, Cornell, Los Alamos) </li></ul><ul><li>The OpenURL architecture generalizes the SFX research via an open standard to be used by interested parties </li></ul><ul><li>V-link is based upon the OpenURL </li></ul>
  5. 5. Version <ul><li>NISO standarized OpenURL: ANSI/NISO Z39.88 - The OpenURL Framework for Context-Sensitive Services </li></ul><ul><li>V-link supports version 0.1, 1.0 SAP and hybrids of the OpenURL </li></ul>
  6. 6. What is an OpenURL <ul><li>The OpenURL is a syntax to create web-transportable packages of metadata and/or identifiers about an information object (a book, journal, article…). </li></ul><ul><li>It is a query string with key/value pairs </li></ul>
  7. 7. Inbound OpenURL links <ul><ul><li>BASE-URL is the internet address of the OpenURL link generator e.g.: http://bib.be/vlink </li></ul></ul><ul><ul><li>QUERY string contains (bibliographical) metadata: e.g.: genre=book&isbn=0123456789 </li></ul></ul><ul><ul><li>OpenURL e.g.: http://bib.be/vlink?genre=book&isbn=0123456789 </li></ul></ul>OpenURL = BASE-URL '?' QUERY
  8. 8. The OpenURL QUERY <ul><li>By value transfer: </li></ul><ul><ul><li>metadata about a certain object (book, journal, cd, movie…) is physically delivered to V- link </li></ul></ul><ul><ul><li>with the metadata V-link creates context-sensitive links </li></ul></ul><ul><li>By reference transfer: </li></ul><ul><ul><li>a pointer/identifier (digital object identifier, pmid, local identifiers…) to the information is delivered. V- link must resolve the pointer in order to get hold of the actual information </li></ul></ul><ul><ul><li>V-link fetches the record and parses the metadata </li></ul></ul><ul><ul><li>with the metadata V-link creates context-sensitive links </li></ul></ul>
  9. 9. By Value transfer OpenURL source V-link targets OpenURL (inbound link) URLs (outbound links)   
  10. 10. By reference transfer OpenURL source V-link targets OpenURL URLs Metadata source      Fetch via OAI-PMH, Z39.50, HTTP etc. identification number metadata DOI, pmid, OAI…
  11. 11. By reference example OAI-PMH
  12. 12. marc21 xml from VubisSmart
  13. 13. Outbound database specific links <ul><li>The metadata received via the OpenURL is used to generate deep links to V-link targets </li></ul><ul><li>The deep links are most of the time database specific URLs: e.g. ISBN link to Amazon.com (isbn=1565925777) http://www.amazon.com/exec/obidos/ASIN/1565925777/ </li></ul><ul><li>Some provider do support OpenURL for outbound linking: e.g. Springer link http://www.springerlink.com/openurl.asp?genre=journal&issn=0942-8925 </li></ul>
  14. 14. Supported genres <ul><li>OpenURL genres: </li></ul><ul><ul><li>biased on scholarly material </li></ul></ul><ul><ul><li>article, book, bookitem, conference, journal, preprint, proceeding </li></ul></ul><ul><li>V-link genres: </li></ul><ul><ul><li>extra private genres </li></ul></ul><ul><ul><li>vlink-audio, vlink-game, vlink-movie, vlink-ticker, vlink-track, vlink-unknown </li></ul></ul>
  15. 15. V-link flow WebOpac (local OpenURL source) BD Book V -link (local) Menu … Amazon Amazon (external OpenURL target) Book Amazon 1 2 3