Enhancing Collaborative Tagging Systems Through Synonym Control

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

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 ?

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="DC.date" content="2007-01-12" /> <META name="DC.subject" content="Art photography" /> <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!

Enhancing Collaborative Tagging Systems Through Synonym Control

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