enhancing collaborative tagging systems through synonym control
Post on 20-Jan-2015
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Enhancing Collaborative Tagging Systems
Through Synonym Control
Agenda
• Information Organization
• Metadata
• Collaborative tagging
• Benefits & drawbacks
• Solution proposal
• Prototype demo
• Findings & Conclusion
Enhancing Collaborative Tagging Systems
Through Synonym Control
Information Organization
• Traditionally driven by Librarians
• Classification Systems– Controlled Vocabularies– Hierarchical structure– Maintained by professionals
• Good at accuracy (research)
• Bad at scaling up (web)
Enhancing Collaborative Tagging Systems
Through Synonym Control
Information Organization
WWW(11.5 B documents1)
LCSH(5 volumes)
1Gulli, A. Signorini, A. (2005): The Indexable Web is more than 11.5 billion pages
?
Enhancing Collaborative Tagging Systems
Through Synonym Control
Information Organization
Enhancing Collaborative Tagging Systems
Through Synonym Control
Metadata
• Data about data
• Surrogate for real objects
• (Mostly) manual extraction
• Author- or editor-based
Enhancing Collaborative Tagging Systems
Through Synonym Control
Metadata Author: Douglas AdamsTitle: The Hitchhiker‘s Guide
To the GalaxyYear: 1979Genre: Science-FictionPublisher: Megadodo PublicationsPages: 320Cover: PaperbackISBN: 978-0345391802
Author: Douglas AdamsTitle: The Hitchhiker‘s Guide
To the GalaxyYear: 1979Genre: Science-FictionPublisher: Megadodo PublicationsPages: 320Cover: PaperbackISBN: 978-0345391802
Enhancing Collaborative Tagging Systems
Through Synonym Control
Metadata Artist: Miles DavisAlbum: Kind of BlueYear: 1959Genre: JazzLabel: ColumbiaDuration: 55‘21Mastering: AAD
Artist: Miles DavisAlbum: Kind of BlueYear: 1959Genre: JazzLabel: ColumbiaDuration: 55‘21Mastering: AAD
Enhancing Collaborative Tagging Systems
Through Synonym Control
Metadata File Size: 527.707 BytesFile Type: JPEGManufacturer: CanonModel number: PowerShot G3Image orientation: Top, leftResolution (width): 72 ppiResolution (height): 72 ppiExposure time: 1/200 sf number: 3,2Date & time of image: 2005:11:19
16:19:01
File Size: 527.707 BytesFile Type: JPEGManufacturer: CanonModel number: PowerShot G3Image orientation: Top, leftResolution (width): 72 ppiResolution (height): 72 ppiExposure time: 1/200 sf number: 3,2Date & time of image: 2005:11:19
16:19:01
Enhancing Collaborative Tagging Systems
Through Synonym Control
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” /> ...
<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” /> ...
Enhancing Collaborative Tagging Systems
Through Synonym Control
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
Enhancing Collaborative Tagging Systems
Through Synonym Control
Collaborative Tagging
• Versatile & Instantly Extensible• Democratic / Community-based• Instant discovery of Related Information• Various application domains:
– Social Bookmarking– Content management– Site Navigation
Enhancing Collaborative Tagging Systems
Through Synonym Control
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
Enhancing Collaborative Tagging Systems
Through Synonym Control
Enhancing Collaborative Tagging Systems
Through Synonym Control
Enhancing Collaborative Tagging Systems
Through Synonym Control
Identified problems with CT
• Lack of Structure• Language variability• Arbitrariness, no synonym control• Recall / Precision• Tag spam• Privacy issues
Enhancing Collaborative Tagging Systems
Through Synonym Control
Synonym Control
Blog blogger blogging blogs
bookmarks bookmark bookmarking
tagging tags
reference howto
Enhancing Collaborative Tagging Systems
Through Synonym Control
Demo
Enhancing Collaborative Tagging Systems
Through Synonym Control
Field Study
• 4 weeks field study
• Over 200 participants
• 80 distinct tags
• 15 synonym groups
• Feedback from end-users and experts
Enhancing Collaborative Tagging Systems
Through Synonym Control
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?
Enhancing Collaborative Tagging Systems
Through Synonym Control
Thank you!
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