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Socially-Aware Distributed Systems or Why this Class Collaboration?

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Socially-Aware Distributed Systems or Why this Class Collaboration? Anda Iamnitchi anda_at_cse.usf.edu * * There are various systems that demonstrate that exploiting ... – PowerPoint PPT presentation

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Title: Socially-Aware Distributed Systems or Why this Class Collaboration?


1
Socially-Aware Distributed Systems or Why this
Class Collaboration?
  • Anda Iamnitchi
  • anda_at_cse.usf.edu

2
Distributed Systems
  • Collections of stand-alone communicating devices
    that have a common task or objective
  • Internet-connected computers
  • Mobile devices (cell phones, PDAs)
  • Common tasks
  • Communicate/share data (the Web, BitTorrent)
  • Compute something together (SETI_at_home)
  • ...
  • Collectively provide a service

3
A Distributed System
4
Or a Distributed System
5
Thesis
  • The wealth of social information exposed from
    multiple sources can be mined in the design of
    distributed computing infrastructures
  • to facilitate improved performance for
    traditional applications and services
  • to enable novel applications.
  • Funded by NSF CAREER Award

6
Social Information
  • Connects people through relationships
  • Object centric use of same objects
  • Person centric declared relationships or
    co-participation in events, groups, etc.
  • Social relationships can be translated into
  • Trust
  • Incentives for resource sharing
  • Shared interest in content

7
Motivating Application Socially-aware Call
Censor
8
Motivating Application Data Placement
9
An Example Interest Sharing
No 24 in B minor, BWV 869 Les Bonbons
Yellow Submarine Les Bonbons
Yellow Submarine Wood Is a Pleasant Thing to
Think About
Wood Is a Pleasant Thing to Think About
  • The interest-sharing graph GmT(V, E)
  • V is set of users active during interval T
  • An edge in E connects users who share at least m
    file requests within T

10
Small Worlds
D. J. Watts and S. H. Strogatz, Collective
dynamics of small-world networks. Nature,
393440-442, 1998 R. Albert and A.-L. Barabási,
Statistical mechanics of complex networks, R.
Modern Physics 74, 47 (2002).
11
Web Interest-Sharing Graphs
12
DØ Interest-Sharing Graphs
28 days, 1 file
7days, 1file
13
KaZaA Interest-Sharing Graphs
2 hours 1 file
28 days 1 file
1 day 2 files
4h 2 files
12h 4 files
7day, 1file
14
Proactive Information Dissemination
D0
Web
Kazaa
15
Main Research Questions
  • What social information is relevant to
    distributed systems design?
  • How to protect private information?
  • How to use social information?
  • What applications and services can benefit from
    social information?

16
Relevance to this Collaborative Class?
  • Experience with interdisciplinary work
  • Communication (e.g., geodesic vs. shortest path)
  • Field-specific problem-solving approach
  • High potential for more interesting research
  • By formulating more interesting questions
  • By access to richer computational tools and
    expertise
  • Better learning (bigger project, real problems)
  • Team work can be highly productive outcome
    bigger than the sum of the parts.

17
(No Transcript)
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