1. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 1 Knowledge Management in Web 2.0 Comparison Communities: Comparison

2. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 2 Agenda  Privacy  Community  Knowledge

3. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 3 Privacy  Missing awareness about revealing personal information  Which community does support privacy? And how?  Visibility of information on profiles  What kind of information can be searched  Visibility of private activities  Rights for using the information  Who is the owner of the informations?  Firing due to improper statements on bulletin board like „my company sucks“

4. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 4 Privacy in Facebook Mostly private, but many people don't mind their privacy TOS scandal: Facebook owns everything you present of yourself Facebook tried to revert this mistake because of massive protest from the community Movement to democratic principles Mostly private, but many people don't mind their privacy TOS scandal: Facebook owns everything you present of yourself Facebook tried to revert this mistake because of massive protest from the community Movement to democratic principles

5. Privacy in ResearchGate privacy and data protection are very important issues Users can manually publicate their content ResearchGATE “will not sell or otherwise share personal data” (serious business)‏ 08.06.09 | | 5

6. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 6 Privacy in Twitter  Everything is public (even for unregistered users)‏  Privacy depends on what you tweet (timeline can be hidden)‏  Twitter „owns“ the tweets

7. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 7 Community Consumer behavior depends on the audience and publicity  Self-promotion  Different topics  Social networking (making „real“ friends with communities)‏  Social networks interesting for marketing (viral marketing)‏  NLP, Ethnography: language analysis is interesting

8. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 8 Community in Facebook  Communication networks  Current mood and feelings  Funstuff (popular: quiz apps)‏  Huge amount of groups

9. Community in ResearchGate Online community for scientists and researchers Group-function:  Discussions  Opinion polls Scientific community  Collaborate, cooperation on scientific publications 08.06.09 | | 9

10. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 10 Community in Twitter  Companies use Twitter for marketing  Self-promotion  Networking

11. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 11 Knowledge  Few Facts, more insider-news  Many opinions  Unfiltered information  Importance of publicy / privacy  Different search capabilities

12. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 12 Knowledge in Facebook  Limited to access level  Opinions, Networks, Interests / personal data  Search is limited

13. Knowledge in Researchgate  Opinions, Networks, Interests / personal data  Full text search  From scientists to scientists 08.06.09 | | 13

14. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 14 Knowledge in Twitter  There is no border about gathering informations  Useless content  Opinions, Networks, Interests / personal data  Full text search  Hashtags

15. 08.06.09 | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 15 Impact of communities on our life  Replacing real social life  Easier way to meet people  Wide variety of discussions  Instant news  Organizing events  Marketing and propaganda

16. 08.06.09 | Alper Ortac | Computer Science Department | Ubiquitous Knowledge Processing Lab | © Prof. Dr. Iryna Gurevych | 16 The End Thanks for your attention! Questions?