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4004  acm   ajax   collaborative   enhancing   animatedgif  apache  applescript  art articles awareness Backup benchmark bibliography bibtex blog  books   browser bugtracking bwl cassette censorship chair   collaborative   china citation classification client cms code community   tagging   systems   conference controlled vocabulary convert costumes cover css customization dashboard database del.icio.us delicious   through   design development   Lukas Gwardak   dpi e-book e-mail emulator engelbart faq  file firefox folksonomy fon   framework  synonym   free google graph graphics hack hacks hardware hci history htaccess   control   html icons id interaction javascript jobmarket jobs lafonera lamp latex
Agenda Information Organization Metadata Collaborative tagging Benefits & drawbacks Solution proposal Prototype demo Findings & Conclusion
Information Organization Traditionally driven by Librarians Classification Systems Controlled Vocabularies Hierarchical structure Maintained by professionals Good at accuracy (research) Bad at scaling up (web)
Information Organization WWW (11.5 B documents 1 ) LCSH (5 volumes) 1 Gulli, A. Signorini, A. (2005): The Indexable Web is more than 11.5 billion pages ?
Information Organization
Metadata Data about data Surrogate for real objects (Mostly) manual extraction Author- or editor-based
Metadata Author: Douglas Adams Title: The Hitchhiker‘s Guide To the Galaxy Year: 1979 Genre: Science-Fiction Publisher: Megadodo Publications Pages: 320 Cover: Paperback ISBN: 978-0345391802
Metadata Artist: Miles Davis Album: Kind of Blue Year: 1959 Genre: Jazz Label: Columbia Duration: 55‘21 Mastering: AAD
Metadata File Size: 527.707 Bytes File Type: JPEG Manufacturer: Canon Model number: PowerShot G3 Image orientation: Top, left Resolution (width): 72 ppi Resolution (height): 72 ppi Exposure time: 1/200 s f number: 3,2 Date & time of image: 2005:11:19  16:19:01
Metadata <HTML> <HEAD> <META name=&quot;DC.date&quot; content=&quot;2007-01-12&quot; /> <META name=&quot;DC.subject&quot; content=&quot;Art photography&quot; /> <META name=”DC.authors” content=”Lukas Gwardak” /> <META name=”DC.keywords” content=”photo, art, camera” /> ...
Collaborative Tagging Make the users contribute metadata! Tags = labels = simple keywords No controlled vocabulary No hierarchy Simple, Fast, Intuitive Driven by incentives to find own resources and discover new ones
 
Collaborative Tagging Versatile & Instantly Extensible Democratic / Community-based Instant discovery of Related Information Various application domains: Social Bookmarking Content management Site Navigation
Social Bookmarking Store your bookmarks online Share your bookmarks with others Assign tags to your bookmarks Find your bookmarks using tags Find related bookmarks Subscribe to tags
 
 
Identified problems with CT Lack of Structure Language variability Arbitrariness, no synonym control Recall / Precision Tag spam Privacy issues
Synonym Control Blog  blogger   blogging   blogs bookmarks  bookmark bookmarking tagging  tags reference howto
Demo
Field Study 4 weeks field study Over 200 participants 80 distinct tags 15 synonym groups Feedback from end-users and experts
Findings & Conclusion Synonym-based suggestion works! Findability CAN be improved Room for improvement: Better interaction design Create incentives for more accuracy Integration of a lexical database Private synonyms?
Thank you!

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Enhancing Collaborative Tagging Systems Through Synonym Control