Download - Semantic Search for Media Portals
Semantische Suche in Medienportalen
Dr. Sebastian SchaffertSalzburg Research / Salzburg NewMediaLab
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Introduction
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Sebastian Schaffert
• Doktorat in Informatik, Uni München
• Senior Researcher bei Salzburg Research
• Forschungsgebiete Social Software, Web 2.0 und Semantic Web
• Projektkoordinator des EU-Projekts „KiWi - Knowledge in a Wiki“
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Salzburg Research• Forschungsgesellschaft des Landes Salzburg
• Fokus auf interdiszipliäre IT-Forschung
• Wissens- und Medienmanagement
• Mobilität und ortsbasierte Dienste
• Bildung und Medien
• E-Culture
• Netzwerktechnologien
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Salzburg NewMediaLab
• Österreichisches Kompetenzzentrum zu Neuen Medien
• „public private partnership“-Modell mit öffentlicher Kofinanzierung
• Forschung in den Bereichen „Multimediatechnologien“, „Social Software“ und „Semantischen Systemen“
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Information Organisation
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video by M. Wesch/YouTube
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classical paper-based information organisation
is limited by physical constraints and thus
follows a single hierarchy
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Example: Dewey Decimal System
• developed by US librarian Melvil Dewey
• arranging books in a numerically encoded hierarchical order by subject
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Figure from Politt & Tinker (2003)
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but what if your world view does not match Dewey‘s 1930s world view?
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This also holds for newspapers!
photo by birdfarm/Flickr
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Computers offer to organise information along multiple dimensions, detached from
physical constraints http://universe.daylife.com/
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Computers offer to organise information along multiple dimensions, detached from
physical constraints http://universe.daylife.com/
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Computers offer to organise information along multiple dimensions, detached from
physical constraints http://universe.daylife.com/
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Different Hierarchies
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Example: Holiday Photos
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you could organise as ...
2008
Italy Photos 2008
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or as ...
2008
ItalyPhotos 2008
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or even as ...
2008
ItalyPhotos 2008
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or maybe as ?
2008
Italy Photos2008
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all this makes sense ...
... to someone
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but: how many
dimensions are there?
photo by Alex Kessler/Flickr
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5!(exactly)
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LocationAlphabetTimeCategoryHierarchy Richard Saul Wurman
Information Designer
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Location ...
http://tagit.salzburgresearch.at
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Alphabet ...
http://www.linkedin.com
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Time ...
http://simile.mit.edu/timeline/
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Category ...
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Hierarchy ...
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What does this mean for News Portals?
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most existing news portals follow the classical, resort oriented navigation like in
paper-based news - physical limitation lifted to virtual space
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• resort = category (sort of ...)
• but: not necessarily topic!
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• sports • economy• politics• culture• Salzburg
Article on soccer EM could be in ...
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LATCH in Online News
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News by Location ...
http://atlas.tagesschau.de
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News by Alphabet ...
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News by Time ...
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sorry, no good example (except resort-based) :-(
News by Category ...
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News by Category ...
but there is:
http://www.iptc.org
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so why not offer it for navigation?
News by Category ...
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News by Hierarchy ...
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Challenges & Opportunities
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from big ambitions to realisable goal
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1. user centred design means „intuitiveness“ of interface
Challenges ...
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but intuitiveness only exists when facing a bear ...
from: user „randy_harris“ at Flickr
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otherwise, it is rather patterns and idioms we already know ...bread crumps
tag clouds
home link
dropdown selection
tabs
User Interface ...
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• when visiting an online news paper, people almost expect a classical navigation structure
• new idioms need to be introduced very carefully (e.g. blog style, ...)
• more complex structures need to be hidden (in salzburg.com: only in search, not in navigation)
User Interface ...
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2. assuming that editors become „knowledge engineers“ that properly maintain complex knowledge models was unrealistic
Managing Topics ...
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• need to do as much automatic processing as possible (but this is limited)
• possibility to involve users!
Managing Topics ...
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Tagging
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Linking
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Structuring
from: user „liber“ at Flickr
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3. integration with other kinds of content beyond news
Integration ...
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Future Content Platforms
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• Semantic Search (completed 2008): http://search.salzburg.com
• KiWi (platform developed by EU Project):
• Content Integration Framework (2009):integration and connection of different kinds of content
• TagIT (2009):geolocation & social tagging of news and places
Project Deliverables ...
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keyword-based interface, refine search results by
map, category, time, location
search.salzburg.com
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DEMO!
http://search.salzburg.com
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• UI: Ruby on Rails, AJAX• Logic: mostly PL/SQL• DB: PostgreSQL• XML feed of news articles• optimized full-text index, time index,
location index, resort• 700.000 articles
Technology (Productive) ...
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Data Import ...
Articles(XML)
Geolocation(named entities + geo field)
Fulltext Index(PostgreSQL built-in)
Database(PostgreSQL)
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• EU project funded under 7th Framework Programme
• 7 partners, 3.8 Million Euro
• develops a platform for „Semantic Social Software“
• builds on the „Wiki Principles“
KiWi - Knowledge in a Wiki
http://www.kiwi-project.eu
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• content + semantic metadata (finished)
• transactions & versioning (mostly finished)
• semantic tagging (mostly finished)
• facetted search (in progress)
• social networking (in progress)
• personalisation (in progress)
• reasoning (in progress)
KiWi - Core Components
http://www.kiwi-project.eu
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• KiWi Wiki (finished)
• TagIT (mostly finished)
• Dashboard (in progress)
• Blog (planned)
important:
content shared between applications!
KiWi - Applications
http://www.kiwi-project.eu
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Demo!
http://showcase.kiwi-project.eu
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Conclusion
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• reimplementation on top of the KiWi platform
• integration of community features (social networking, sharing, ...)
• integration of different kinds of content(news, wiki, blogs, photos, ...)
• backed by advanced Semantic Web technology (reasoning, information extraction)
Where do we go?
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Book tips ...
• Richard Saul Wurman: Information Anxiety 2
• David Weinberger: Everything is Miscellaneous
• Clay Shirky: Here Comes Everybody - the Powerof Organising without Organisatons
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SNML Books (German)
Nachrichten 2.0: Eine Analyse internationaler Nachrichtenangebote im InternetISBN: 978-3-8370-5731-7
Erfolgreicher Aufbau von Online-Communitys: Konzepte, Szenarien und Handlungsempfehlungen (April 2009)ISBN: 978-3-902448-13-2
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Thanks!
Dr. Sebastian Schaffert
| http://www.salzburgresearch.at| http://www.newmedialab.at
| http://www.kiwi-project.eu (KiWi Website)| http://planet.kiwi-project.eu (KiWi blog)
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