BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:A reciprocation-based economy for multiple services in P2P grids -
  Miranda Mowbray\, HP Labs Bristol UK
DTSTART:20070130T161500Z
DTEND:20070130T171500Z
UID:TALK6225@talks.cam.ac.uk
CONTACT:Saar Drimer
DESCRIPTION:Designers of peer-to-peer grids aim to construct computational
  grids encompassing thousands of sites. To achieve this scale\, the system
 s cannot rely on trust or off-line negotiations among participants. Moreov
 er\, without incentives for donation\, there is a danger that free riding 
 will prevail\, leading the grid to collapse. Reciprocation-based incentive
  mechanisms have been proposed to deal with this problem. However\, they h
 ave only been studied for the case in which a single service - processing 
 power - is shared. In this paper we give a reciprocation-based mechanism f
 or the case when multiple services\, such as processing power and data tra
 nsfers\, are shared. In simulations of scenarios in which the services sha
 red are combinations of two different basic services\, the mechanism perfo
 rms very well\, even when the cost to peers of donating a service is nearl
 y as large as the utility gained by receiving it.\n \nMini-bio:\nMiranda M
 owbray is a Technical Contributor at Hewlett-Packard Laboratories\, Bristo
 l. She studied political philosophy in the United States before obtaining 
 an MA in Mathematics from Cambridge University and a PhD in Algebra from L
 ondon University. She co-founded e-mint\, the UK Association of Online Com
 munity Professionals. Miranda is at present a principal investigator for p
 eer-to-peer technologies at HP Labs.\n
LOCATION:Lecture Theatre 2\, Computer Laboratory\, William Gates Building
END:VEVENT
END:VCALENDAR