This is not a penis: User-generated tags

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Digital History workshop: Crowdsourcing in the Humanities and cultural heritage sector. Victoria University of Wellington 23 April 2013
Session: This is not a penis: User-generated tags
Presenter: Rasmus Thogersen
http://wtap.vuw.ac.nz/wordpress/digital-history/events/crowdsourcing-workshop/presenters/

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This is not a penis: User-generated tags

  1. 1. This is not a penis:Professional descriptors VS game-generated tagsCrowdsourcing for the Digital Humanities andCultural Heritage Sector, 23 April 2013Rasmus Thøgersen
  2. 2. Games With A Purpose (GWAP)“Rather than using computer visiontechniques, which don’t work well enough, weencourage people to do the work by takingadvantage of their desire to be entertained”von Ahn & Dabbish, 2004As an answer toImage of Erik Kessel’s Photography In Abundance (2011)removed, Image of Erik Kessel’s Photography InAbundance (2011) removed,
  3. 3. Make a Difference
  4. 4. Comparison betweenDescriptors• Created by professionals withspecialized knowledge of boththe specific collection and thewider context.• Based on some formaltaxonomy• Also fairly cost-intensive to aska trained librarian to index~2000 images (or 18 million)• Only one perspectiveTags• Created by everyone• A folksonomy• Verified by other players• Cheaper• Probably flawed• Chaotic and free
  5. 5. RQ1
  6. 6. RQ2
  7. 7. RQ1:• More than 50% of the 3Vtags had a semantic relation to the Descriptors• Approx. a third of the 3Vtags had a same/equivalence relation• The second most common relation was the associativeRQ2:• The vast majority of 2Vtags and 3Vtags were Objects/Artifacts• The most interesting descriptions were found in the Free tags• Vandalism do exist…
  8. 8. ?

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