Semantic Search for Media Portals

Semantische Suche in Medienportalen Dr. Sebastian Schaffert Salzburg Research / Salzburg NewMediaLab sebastian.schaffert@salzburgresearch.at 1

Introduction 2

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“ 3

Salzburg Research • Forschungsgesellschaft des Landes Salzburg • Fokus auf interdiszipliäre IT-Forschung • Wissens- und Medienmanagement • Mobilität und ortsbasierte Dienste • Bildung und Medien • E-Culture • Netzwerktechnologien 4

Salzburg NewMediaLab • Österreichisches Kompetenzzentrum zu Neuen Medien • „public private partnership“-Modell mit öffentlicher Koﬁnanzierung • Forschung in den Bereichen „Multimediatechnologien“, „Social Software“ und „Semantischen Systemen“ 5

Information Organisation 6

video by M. Wesch/YouTube 7

classical paper-based information organisation is limited by physical constraints and thus follows a single hierarchy 8

Example: Dewey Decimal System • developed by US librarian Melvil Dewey • arranging books in a numerically encoded hierarchical order by subject 9

Figure from Politt & Tinker (2003) 10

but what if your world view does not match Dewey‘s 1930s world view? 11

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This also holds for newspapers! photo by birdfarm/Flickr 14

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Computers offer to organise information along multiple dimensions, detached from physical constraints http://universe.daylife.com/ 16

Different Hierarchies 17

Example: Holiday Photos 18

you could organise as ... Italy Photos 2008 2008 19

or as ... 2008 Italy Photos 2008 20

or even as ... Italy 2008 Photos 2008 21

or maybe as ? Italy Photos 2008 2008 22

all this makes sense ... ... to someone 23

but: how many dimensions are there? photo by Alex Kessler/Flickr 24

5! (exactly) 25

Location Alphabet Time Category Richard Saul Wurman Hierarchy Information Designer 26

Location ... http://tagit.salzburgresearch.at 27

Alphabet ... http://www.linkedin.com 28

Time ... http://simile.mit.edu/timeline/ 29

Category ... 30

Hierarchy ... 31

What does this mean for News Portals? 32

most existing news portals follow the classical, resort oriented navigation like in paper-based news - physical limitation lifted to virtual space 33

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• resort = category (sort of ...) • but: not necessarily topic! 36

Article on soccer EM could be in ... • sports • economy • politics • culture • Salzburg 37

LATCH in Online News 38

News by Location ... http://atlas.tagesschau.de 39

News by Alphabet ... 40

News by Time ... 41

News by Category ... sorry, no good example (except resort-based) :-( 42

News by Category ... but there is: http://www.iptc.org 43

News by Category ... so why not offer it for navigation? 44

News by Hierarchy ... 45

Challenges & Opportunities 46

from big ambitions to realisable goal 47

Challenges ... 1. user centred design means „intuitiveness“ of interface 48

but intuitiveness only exists when facing a bear ... from: user „randy_harris“ at Flickr 49

User Interface ... otherwise, it is rather patterns and idioms we already know ... bread crumps tabs dropdown selection home link tag clouds 50

User Interface ... • 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) 51

Managing Topics ... 2. assuming that editors become „knowledge engineers“ that properly maintain complex knowledge models was unrealistic 52

Managing Topics ... • need to do as much automatic processing as possible (but this is limited) • possibility to involve users! 53

Tagging 54

Linking 55

Structuring from: user „liber“ at Flickr 56

Integration ... 3. integration with other kinds of content beyond news 57

from: „Wikis in plain English“ 58

from: „Blogs in plain English“ 59

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Future Content Platforms 61

Project Deliverables ... • 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 62

search.salzburg.com keyword-based interface, reﬁne search results by map, category, time, location 63

DEMO! http://search.salzburg.com 64

Technology (Productive) ... • 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 65

Data Import ... Articles Geolocation (XML) (named entities + geo ﬁeld) Database Fulltext Index (PostgreSQL) (PostgreSQL built-in) 66

KiWi - Knowledge in a Wiki • 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“ http://www.kiwi-project.eu 67

KiWi - Core Components • 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) http://www.kiwi-project.eu 68

KiWi - Applications • KiWi Wiki (ﬁnished) • TagIT (mostly ﬁnished) • Dashboard (in progress) • Blog (planned) important: content shared between applications! http://www.kiwi-project.eu 69

Demo! http://showcase.kiwi-project.eu 70

Conclusion 71

Where do we go? • 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) 72

Book tips ... • Richard Saul Wurman: Information Anxiety 2 • David Weinberger: Everything is Miscellaneous • Clay Shirky: Here Comes Everybody - the Power of Organising without Organisatons 73

SNML Books (German) Nachrichten 2.0: Eine Analyse internationaler Nachrichtenangebote im Internet ISBN: 978-3-8370-5731-7 Erfolgreicher Aufbau von Online- Communitys: Konzepte, Szenarien und Handlungsempfehlungen (April 2009) ISBN: 978-3-902448-13-2 74

Semantic Search for Media Portals

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