1. Digital artifacts for remebering and storytelling: PostHistory and Social Network Fragments F. B. Viegas, D boyd, D. H. Nguyen, J. Potter, and J. Donath Speaker: Huang, Yi-Ching

2. What is life? Sharing life with others has more fun

3. About storytelling Telling Stories with MyLifeBits Location, sensor, photo …etc. Digital artifacts for remebering and storytelling PostHistory Social Network Fragments

4. About papers 1 F. B. Viegas, D boyd, D. H. Nguyen, J. Potter, and J. Donath. Digital artifacts for remembering and storytelling: Posthistory and social network fragments. In Proceedings of the 37th Hawaii International Conference on System Sciences, Big Island, Hawaii, USA, January 2004. 2 J. Gemmell, A. Aris, and R. Lueder. Telling stories with mylifebits. In Proceedings of the IEEE International Conference on Multimedia and Expo (ICME), pages 1536- 1539, July 2005. 3 J. Gemmell, R. Lueder, and G. Bell. The mylifebits lifetime store. In Proceedings of the ACM SIGMM Workshop on Experiential Telepresence (ETP 2003), pages 80-83, New York, NY, USA, 2003. ACM Press.

5. Introduction Two projects PostHistory Social Network Fragments Visualize one’s social interactions in email over time

6. Intentions Patterns in email are inaccessible Social network Email exchange rhythms The role of time in these patterns Why visualize? Visualize what? Social landscapes Time and change

7. PostHistory Focus on 2 dimensions of email Time Dyadic relationships with ego Visualize the changes in interaction between ego and their contacts over time

8. Impementation Daily email averages Daily “quality” of emails Frequency of email exchanges with contacts Comparative frequency of email exchanges with contacts

9. Calendar panelContacts panel

10. Circular mode

11. Vertical mode

12. Alphabetical mode

13. Social Network Fragments Explore the structure of an individual’ social network Reflect different facet of personal life Visualize the patterns during one’s life digital email interactions

14. Structure Knowledge ties Awareness ties Weak awareness ties List awareness ties Trusted ties

16. Social network panelhistory panel

17. Small Evaluation Test user: 10 people Use one of the two systems 2 hours interaction Case studies: 2 people Use both two systems 10 hours interaction

18. User’s Reaction Be excited to recognize almost all the names on the screen Be eager to share the stories with the people involved

19. Concerns User want to highlight the meaningful periods of activity for future reference Multiple levels High-level Lower-level Too many names to read in overall visualization Cannot understand the pattern’s meaning

20. Discussion Not only reflect personally, but also share story Privacy The data is incomprehensible without explanation Where to go from here Solution: Public display Semi-public display Personal

21. Conclusion PostHistory and Social Network Fragments are designed to reveal social patterns in email archives Share memories and storytelling props