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The Royal Library, Denmark

The Royal Library, Denmark. Topic Maps as a means to subject search across multiple catalogues. Henrik Laursen , research librarian The University Library Dept. hhl@kb.dk. The Library. - Copenhagen University Library since 1482 - The Kings Library since 1660

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The Royal Library, Denmark

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  1. The Royal Library, Denmark Topic Maps as a means to subject search across multiple catalogues Henrik Laursen, research librarian The University Library Dept. hhl@kb.dk Henrik Laursen

  2. The Library • - Copenhagen University Library since 1482 • - The Kings Library since 1660 • - National Deposit Library since 1697 • - Public Library since 1793 • - 150 kilometres printed matters • electronic databases and periodicals • electronic Deposit Library since 2005 • 500 employees Henrik Laursen

  3. The incentive Subject catalogues from many merged libraries Subject catalogues from many periods Some subject catalogues are also shelf lists - with 3 sub-catalogues for different formats Historical knowledge is a prerequisite The project deals with 6 catalogues: Foreign books catalogue from 1486 – 1950 (RL) Foreign books catalogue from 1950 – 1995 (RL) Foreign books catalogue from 1995  (RL) Foreign books catalogue from 1486 -1990 (UL1) Danish books catalogue  1959 (RL) Danish books catalogue 1960  (RL) Science books catalogue  2006 (UL2) Henrik Laursen

  4. Why now? Digitalisation of old catalogues The foreign books catalogue from 1486 – 1950 is under digitalisation. The books are searchable by author, title and shelf number. But not by subject. The catalogue covers 400.000 books. Merging with yet another library The library has recently been merged with a science library – and the merging of 3 universities including their libraries will take place in 2007 Henrik Laursen

  5. The means Topic maps Topicis in our case the subject classification. The topics are scoped in Danish, English, alternative name, alternative spelling and classification code . Occurrenceis a search-string in the online library base for books with the specific classification. Other occurrences could be references to online reference works. Associationsare in the project limited to two types: ”Super-subclass” and ”Search also” Henrik Laursen

  6. The conversion process • OCR of the typewritten catalogues using FineReader in ”count spaces”-mode • proofreading, esp. correcting indentation • running a perlscript that catches the hierarchical structure of the catalogues and prints a XML file • the resulting topicmap conforms to the ISO standard following the XTM1.dtd, the XML interchange syntax for ISO 13250 Topic Maps Henrik Laursen

  7. The 3-format catalogue Henrik Laursen

  8. Topic example <topic id="YAC-SK2"> <baseName> <scope><topicRef xlink:href="#da"/></scope> <baseNameString>Hjælpefag, hjælpemidler og metoder</baseNameString> </baseName> <baseName> <scope><topicRef xlink:href="#en"/></scope> <baseNameString>Methods and aids</baseNameString> </baseName> <baseName> <scope><topicRef xlink:href="#signatur"/></scope> <baseNameString>YAC</baseNameString> </baseName> <occurrence> <resourceRef xlink:href="https://rex.kb.dk/F?func=find-c&amp;local_base=kgl01&amp;ccl_term=wkl=YAC"/> </occurrence></topic> Henrik Laursen

  9. Association example 1 <association> <instanceOf><topicRef xlink:href="#superclass-subclass"/> </instanceOf> <member><roleSpec> <topicRef xlink:href="#superclass"/> </roleSpec> <topicRef xlink:href="#YA-SK2"/> </member> <member><roleSpec> <topicRef xlink:href="#subclass"/> </roleSpec> <topicRef xlink:href="#YAC-SK2"/> </member> </association> Henrik Laursen

  10. Association example 2 <association id="BCL-IKI-SK2"> <instanceOf> <topicRef xlink:href="#see-also"></topicRef> </instanceOf> <member> <roleSpec> <topicRef xlink:href="#referred-from"></topicRef> </roleSpec> <topicRef xlink:href="#BCL-SK2"></topicRef> </member> <member> <roleSpec> <topicRef xlink:href="#referred-to"></topicRef> </roleSpec> <topicRef xlink:href="#IKI-SK2"></topicRef> </member> </association> Henrik Laursen

  11. Conclusions 1 • TM creates coherence within the catalogues • TMs are scalable 1: new catalogues can be included • TMs are scalable 2: new associations ad libitum • User friendliness: limit your search to a single subject in one catalogue or extend it to more subjects in more catalogues. • TMs are scalable 3: subject specific thesauri can be added Henrik Laursen

  12. Conclusions 2 Off spin without a topicmaps engine: • subject hierarchy added to the online database • subject search through different formats • searchable catalogues as html-pages Henrik Laursen

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