Folksonomies

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Folksonomies

  1. 1. Folksonomies
  2. 2. But First: Metadata What is it?
  3. 3. Metadata It is data about data. It is information about information.
  4. 4. Metadata: <ul><li>Structured information about documents, books, articles, photographs, web pages, etc. </li></ul><ul><li>This data is designed for specific functions usually to facilitate some organization and access of information. </li></ul>
  5. 5. Traditional Metadata <ul><li>Dewey Decimal </li></ul><ul><li>Library of Congress </li></ul><ul><li>Traditional metadata is high quality but costly and it </li></ul><ul><li>doesn’t scale well. </li></ul>
  6. 6. Author Created Metadata <ul><li>For example I might create an xml document that contains </li></ul><ul><li>data about my CD collection: </li></ul><ul><li><mycds> </li></ul><ul><li><cd> </li></ul><ul><li><artist>Bob Dylan</artist> </li></ul><ul><li><title>Blonde on Blonde</title> </li></ul><ul><li></cd> </li></ul><ul><li><cd> </li></ul><ul><li><artist>Funkadelic</artist> </li></ul><ul><li><title>Maggot Brain</title> </li></ul><ul><li></cd> </li></ul><ul><li></mycds> </li></ul>
  7. 7. Author Created Metadata <ul><li>Dublin Core </li></ul><ul><li>XML </li></ul><ul><li>RDF </li></ul><ul><li>Has better scalability but suffers from the same problems </li></ul><ul><li>As traditional metadata: users are disconnected from the </li></ul><ul><li>process. </li></ul>
  8. 8. User Created Metadata(Folksonomies)‏ <ul><li>Del.icio.us </li></ul>
  9. 9. Folksonomies This term is attributed to Information Architect Thomas Vander Wal. It is the combination of two words. Folk: Of, occurring in, or originating among the common people: folk culture. Taxonomy: A division into ordered groups or categories.
  10. 10. Weaknesses <ul><li>Ambiguity: </li></ul><ul><li>There is no synonym control so multiple words may </li></ul><ul><li>be used to describe the same thing. </li></ul><ul><li>The same word may be used for multiple meanings. </li></ul><ul><li>For instance the ant maybe used to describe: </li></ul><ul><li>The insect. </li></ul><ul><li>Actor Network Theory in the domain of sociology. </li></ul><ul><li>A java programming language tool. </li></ul>
  11. 11. Strengths <ul><li>Browsing </li></ul><ul><li>Del.icio.us is an exploratory tool that supports browsing. </li></ul><ul><li>User centered </li></ul><ul><li>Directly reflects the vocabulary of its users. </li></ul><ul><li>Desire lines </li></ul><ul><li>Supports the creation of emergent “paths”. </li></ul><ul><li>Namespace </li></ul><ul><li>Has a flat name space/non-hierarchal categorization. </li></ul>
  12. 12. Examples (from Clay Shirky)‏
  13. 13. Dewey, 200: Religion 210 Natural theology 220 Bible 230 Christian theology 240 Christian moral & devotional theology 250 Christian orders & local church 260 Christian social theology 270 Christian church history 280 Christian sects & denominations 290 Other religions Dewey Decimal Religions of the World
  14. 14. Library of Congress World History D: History (general)‏ DA: Great Britain DB: Austria DC: France DD: Germany DE: Mediterranean DF: Greece DG: Italy DH: Low Countries DJ: Netherlands DK: Former Soviet Union DL: Scandinavia DP: Iberian Peninsula DQ: Switzerland DR: Balkan Peninsula DS: Asia DT: Africa DU: Oceania DX: Gypsies
  15. 16. What is being optimized?
  16. 17. When do traditional cataloging systems work well? <ul><li>Domain to be Organized </li></ul><ul><li>Small corpus </li></ul><ul><li>Formal categories </li></ul><ul><li>Stable entities </li></ul><ul><li>Restricted entities </li></ul><ul><li>Clear edges </li></ul><ul><li>Participants </li></ul><ul><li>Expert catalogers </li></ul><ul><li>Authoritative judgment </li></ul><ul><li>Coordinated users </li></ul><ul><li>Expert users </li></ul>
  17. 18. When do traditional cataloging systems not work well? <ul><li>Domain to be Organized </li></ul><ul><li>Large corpus </li></ul><ul><li>No formal categories </li></ul><ul><li>Unstable entities </li></ul><ul><li>Unrestricted entities </li></ul><ul><li>No clear edges </li></ul><ul><li>Participants </li></ul><ul><li>Uncoordinated users </li></ul><ul><li>Amateur users </li></ul><ul><li>Naïve catalogers </li></ul><ul><li>No Authority </li></ul>

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