semantic search for media portals

Semantische Suche in Medienportalen

Dr. Sebastian SchaffertSalzburg Research / Salzburg NewMediaLab

sebastian.schaffert@salzburgresearch.at

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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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from: „Wikis in plain English“

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from: „Blogs in plain English“

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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

| sebastian.schaffert@salzburgresearch.at

| 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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