{{{
#!forumlinks
}}}

= BarterCast =

BarterCast is a protocol to exchange the
altruism levels of peers. Altruism is
defined as the amount of uploading versus
downloading of a person. The goal is to 
create incentives for cooperation. 
(See [wiki:IncentiveSystems IncentiveSystems] for an 
overview of other incentive mechanisms.)


=== Paper ideas ===

  - Expression and dataset for barter partners per ''swarm'' (100+)
  - Expression and dataset for number of downloads per ''user'' (1000+)
  - Expression and dataset for download behavior of a ''community'' (10000+)

Paper draft: [source:/publications/bartercast]

=== Source of info ===

[http://multiprobe.ewi.tudelft.nl/dataset.html Bittorrent crawl][[BR]]
[wiki:LogFileAnalysis Tribler crawl][[BR]]
[wiki:SocialOverlay Community crawl][[BR]]
[wiki:P2PSimulator]

== Key research challenges ==

  - Unavailability of information due to: using 1st hand info only and peers unreliability
  - Overhead of sending to everyone, for instance, at the cost of 250 Bytes when giving out 10MByte.
  - Bootstrapping into this collective rep sys.

endsecret