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University of Southern Denmark IMADA - Department of Mathematics and Computer Science
   

COMPUTER SCIENCE COLLOQUIUM

Dark Encounter Computations

René Peralta

Tuesday, August 9, 2005, at 14:15
Seminar Room

ABSTRACT

We consider the problem of retrieving information from a closed theater with largely unknown characteristics (e.g. a disaster scene, a money-laundering operation, a compromised computer network). "Agents" enter the theater and make observations. In the three theaters above, the agents can be people (or robots), euros with embedded mu-chips, network packets, respectively.

Agents are assumed to have constant memory and can only engage in pair-wise communication during unpredictable encounters. Eventually some lucky agent makes it out of the theater alive (not an easy task). We would like this agent to contain global information.

We define a new formal model of distributed computation that captures the above scenario. We give examples of computable predicates within this model and discuss open problems.

This is joint work with Dana Angluin, James Aspnes, Zoe Diamadi, and Michael Fischer.

Host: Joan Boyar


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