Playing Tag : Cataloging by the Crowd


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Playing Tag : Cataloging by the Crowd

  1. 1. Playing Tag: Cataloging by the Crowd <ul><ul><li>Elizabeth B. Thomsen </li></ul></ul><ul><ul><li>Member Services Manager </li></ul></ul><ul><ul><li>NOBLE: North of Boston Library Exchange </li></ul></ul><ul><ul><li>[email_address] </li></ul></ul>
  2. 2. Traditional Taxonomy <ul><li>&quot;A Place for Everything, and Everything in Its Place&quot; </li></ul><ul><li>Shelf-oriented: We have to decide the primary subject for a work so we can put it somewhere </li></ul><ul><li>There’s always a top-down hierarchy </li></ul>
  3. 3. Catalogers <ul><li>We strive for logic, order and consistency </li></ul><ul><li>We provide access through authorized headings, controlled vocabulary and properly-constructed Library of Congress Subject Headings </li></ul><ul><li>Learn the system, and then apply it to all new material </li></ul>
  4. 4. Not So Simple <ul><li>Many works are about more than one thing </li></ul><ul><li>Many subjects are “point up” to two or more higher subjects </li></ul><ul><li>Any decision is wrong for some of your users </li></ul><ul><li>We mitigate by adding links and pointers: See and See Also references, added entries, keyword searching, etc. </li></ul>
  5. 5. Wikipedia <ul><li>Cataloging issues: establish a subject, redirect users from other terms </li></ul><ul><li>A simple redirect can take users from the unauthorized term to the one being used </li></ul>
  6. 6. Disambiguation Pages <ul><li>Used when a subject has more than one meaning, including topics, geographic and personal names </li></ul><ul><li>Disambiguation pages have organized, annotated lists of all the different topics using the same term </li></ul><ul><li>Death Penalty </li></ul>
  7. 7. Two Paths to Disambiguation <ul><li>Best Guess: If there is one article that is the most likely, Wikipedia will redirect the user to that article, but offer a link to the disambiguation page </li></ul><ul><li>User Must Choose: If there is no most likely article, the user must choose </li></ul><ul><li>Van Gogh | Mercury </li></ul>
  8. 8. Flickr <ul><li>Photosharing site </li></ul><ul><li>Members tag their photos for their own convenience, but also to share them </li></ul><ul><li>Members may allow others to add tags </li></ul><ul><li>Groups use tags to create galleries </li></ul><ul><li>Many informal games and projects use tags </li></ul>
  9. 9. Flickr Tags <ul><li>Most common tags: subjects and places </li></ul><ul><li>Other tags: medium, technical details, mood, color, geotagging </li></ul><ul><li>No synonym control </li></ul><ul><li>Informal rules tend to develop at all levels </li></ul><ul><li>Many members use multiple tags for the same concept: mass and massachusetts </li></ul>
  10. 10. How Useful are Flickr Tags <ul><li>Aboutness more difficult to determine for photographs than text </li></ul><ul><li>Place names: tag all by place taken, or use only when the place is significant? Use hierarchy for place names? </li></ul><ul><li>What about tags like “me” and “cute”? </li></ul>
  11. 11. Flickr Examples <ul><li>Flickr Current Tags – This is the main tags page, with the most popular tags from the past few days, plus all the most popular tags </li></ul><ul><li>My Tag Cloud – A member’s tag cloud </li></ul><ul><li>Boston | Boston Clusters | Cute Clusters </li></ul>
  12. 12. Flickr: Exploration <ul><li>Flickr tags are useful for exploration and discovery </li></ul><ul><li>You can’t find everything, and probably wouldn’t want to </li></ul><ul><li>Tags have to be seen in context: groups, projects, contacts, clustering, interestingness, etc. </li></ul><ul><li>Flickr search is weak </li></ul>
  13. 13. <ul><li>Social bookmarking site </li></ul><ul><li>Members save things here for their own use, share them and get recommendations </li></ul><ul><li>Members tag items for their own convenience, but also to share and find additional resources </li></ul>
  14. 14. Tag Features <ul><li>Recommend: When you tag an item, the system presents recommended tags based on what other people have used, one click to add those. Tends to reduce synonym and spelling errors </li></ul><ul><li>Tag bundles: Members can create sets of related tags for their own use, adds a little hierarchy and organization </li></ul>
  15. 15. Examples <ul><li> Main Page </li></ul><ul><li>Main Tag Display </li></ul><ul><li>Most Popular Tags </li></ul><ul><li>Display of tag: opensource </li></ul>
  16. 16. CiteULike <ul><li>Academic social bookmarking site </li></ul><ul><li>Similar to, Furl and others </li></ul><ul><li>Members tag citations for articles, books, websites, etc. </li></ul><ul><li>Broad folksonomy : Many people tagging the same citations </li></ul><ul><li>CiteULike </li></ul>
  17. 17. LibraryThing <ul><li>Social cataloging system for books </li></ul><ul><li>Members catalog their personal book collections; can also be used for small organization libraries, booklists, etc. </li></ul><ul><li>Imports cataloging from LC, Amazon and other sources </li></ul><ul><li>Members add tags to books in their collection </li></ul>
  18. 18. LibraryThing Tags <ul><li>Members use tags for all sorts of things: subjects, genre, theme, location, gift notes, and designations like tbr (to be read) </li></ul><ul><li>Tags are used to organize the member’s collection, and for exploration of the site as a whole </li></ul>
  19. 19. LibraryThing Synonyms <ul><li>LibraryThing allows premium members to link duplicate tags </li></ul><ul><li>Only affects the global view of the tags, not the actual tags </li></ul><ul><li>Only true duplicates should be linked </li></ul><ul><li>Linking is noted, and can be undone </li></ul>
  20. 20. LibraryThing Tag Examples <ul><li>Tag Cloud </li></ul><ul><li>Author Cloud </li></ul><ul><li>Zeitgeist </li></ul><ul><li>Selected Tag: Complexity </li></ul><ul><li>Synonyms: Cooking </li></ul><ul><li>Tag Combining: Recipes </li></ul>
  21. 21. Future Directions <ul><li>More recommended tags based on tags on the same or similar works; the users own tags, etc. </li></ul><ul><li>More spelling help: “Did you mean…” </li></ul><ul><li>More synonym control for searching, as in LibraryThing </li></ul><ul><li>Use of algorithms to assist in synonym control </li></ul><ul><li>Translation tools for tag searching </li></ul><ul><li>Private tags </li></ul>
  22. 22. Library Catalog Ideas <ul><li>Use LibraryThing or something similar to allow library members to create and share their own tagged collections of titles. </li></ul><ul><li>Allow members to determine their own privacy settings for sharing lists. Include a real name option, like Amazon </li></ul><ul><li>Integrate social information into the catalog as an option </li></ul>
  23. 23. Library Ideas, Cont’d <ul><li>Encourage vendors to incorporate social bookmarking features into their personalization options </li></ul><ul><li>Add tag searching as an option </li></ul><ul><li>Harvest information from the social software for collection development, as website content, etc. </li></ul>
  24. 24. Questions? <ul><li>Elizabeth Thomsen </li></ul><ul><li>[email_address] </li></ul>