1. My research @ MobiSys (daniele quercia) U C L

2. I research @ ...

3. U niversity C ollege L ondon

4. I’m part of ...

5. MobiSys

6. <MobiSys>

7. We research distributed systems (mostly mobile)

8. We blog mobblog ucl

9. We? 2 examples...

10. How to make it distributed. Traditional Collaborative Filtering: centralized

11. h How to make it distributed (neal lathia)

12. temporal evolution of ratings 1. Temporal Evolution of Ratings

13. 2. Trustworthiness of ratings

14. Computing on Sensors: Limited & Oversimplified

15. Computing on Sensors: Limited & Oversimplified Sensors form a ...

16. Ways of sharing load (elisa rondini)

17. Two ways already work ...

18. on a large testbed !

19. </MobiSys>

20. <My Research>

21. Reputation Systems for Mobiles

22. Daniele Quercia Situation : People exchange digital content

23. Problem : content overload content drowning user help! who will come to the rescue?

24. Proposal: Accept content only from reputable people

25. Who is reputable ? That’s subjective!

26. Daniele Quercia Take two devices… A B

27. Daniele Quercia A B Shall I accept content from B ?

28. Daniele Quercia A B A should set its trust for B

29. Daniele Quercia A B A should set its trust for B Yes, but how? That’s my research!