1. TeLLNet
Challenging Information Systems
on a Web Scale:
Reflective Open
Community Information Systems
Ralf Klamma
Lehrstuhl Informatik 5
November 15, 2011
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KL-111010-1

2. Agenda
TeLLNet
Reflective Open Community
Information Systems
Web Science
Teaching
Demos
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KL-111010-2

3. The Fragmented Nature of the Web
IN Continent Central Core OUT Continent
TeLLNet
Tubes
Anderson: The Long Tail: Why the Future of Tendrils Islands
Business is Selling Less of More, 2006 Barabasi: Linked – The New Science of Networks, 2002
The Web is a scale • Power Laws (Pareto Distribution etc.)
• 95 % of users are in the long tail
free, fragmented (Communities)
• Collaboration and Learning is based
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
network on trust and passion
I5-KL-111010-3

4. Web Science Paradigms
 Merge of analytic and synthetic paradigms
 In an analytic discipline
TeLLNet
– To find laws
– To generate phenomena
– To explain observed
phenomena
 In a synthetic discipline
– To formalize
– To create algorithms Example: The PageRank link structure
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
– To support specific desired behaviors
I5-KL-111010-4

5. Reflective Open
Community Information Systems
• LAS & Services • yFiles
• youTell • Repast
TeLLNet • SeViAnno • AERCS
Responsive • Network
• Advanced Community Models
Open
Web & Visualization
Community • Network
Multimedia & Simulation
Environments Analysis
Technologies
Web Engineering
• Actor Network
Web Analytics
• XMPP Theory
• HTML5 • Communities of
• MPEG-7 Community Community Practice
• Web Support Analytics • Game Theory
Services • Community
• Requirements • MediaBase Detection
• RESTful Bazaar • Web Mining
• PALADIN
• LAS • CAMRS • MobSOS • Recommender
• Cloud Systems
Computing • Multi Agent
• Mobile Simulation
Computing
Social Requirements Engineering
• Agent and Goal Oriented i* Modeling
Lehrstuhl Informatik 5
(Informationssysteme) • Participatory Community Design
Prof. Dr. M. Jarke
I5-KL-111010-5

6. DEMO: AERCS - Recommendation of
Venues for Young Computer Scientists
 DBLP (http://www.informatik.uni-
trier.de/~ley/db/)
TeLLNet
- 788,259 author’s names
- 1,226,412 publications
- 3,490 venues (conferences,
workshops, journals)
 CiteSeerX (http://citeseerx.ist.psu.edu/)
- 7,385,652 publications
- 22,735,240 citations
- Over 4 million author’s names
 Combination
- Canopy clustering [McCallum 2000]
- Result: 864,097 matched pairs
- On average: venues cite 2306 and
Lehrstuhl Informatik 5
are cited 2037 times
(Informationssysteme)
Prof. Dr. M. Jarke Pham, Klamma, Jarke: Development of Computer Science Disciplines – A Social Network
I5-KL-111010-6 Analysis Approach, SNAM, 2011

7. DEMO: XMPP Communication for
Mobile Web Widget Interfaces
TeLLNet
Tablets for video
players with multi-
touch interaction
Smartphones for on-site
video capture,
geo-tagging on maps
and video annotation
Lehrstuhl Informatik 5
(Informationssysteme)
Prof. Dr. M. Jarke
Laptops and PCs for text editing
I5-KL-111010-7

8. Teaching
WS 2011/2012
TeLLNet
• Web Science Lecture (Next: WS 2012/13)
• Serious Games Lab (Bachelor & Master)
• Open Bachelor and Master Thesis projects
SS 2012
• Web Science Seminar (Master)
Lehrstuhl Informatik 5
• Open Bachelor and Master Thesis projects
(Informationssysteme)
Prof. Dr. M. Jarke
I5-KL-111010-8