SMART: Next talk by Janor Korner [Communication in a Hostile Environment]
Vishwas Patil
Speaker : Janos Korner
Date : MAR 27, 2006
Venue & Time : Aula Alfa, 113 Via Salaria. 03:00 PM
Abstract : Multi-user information theory is the study of how
much information can be transmitted simultaneously
in a more or less error-free manner to several
receivers over a network. The information can come
from several different transmitters and not all the
receivers have equal access rights. In
non-cooperative models of the same kind additional
constraints of secrecy are imposed; some receivers
have to be prevented from getting specific parts of
the information. In an information-theoretic sense
this is achieved by making sure that if the
different messages are selected for transmission
equiprobably, then the receiver's conditional
entropy on this set of messages given the output she
observes is equal to the corresponding unconditional
entropy. We explain the classical results on the
wire-tap channel model and extend them to the case
of zero-error. Many open questions remain.
Please feel free to extend this invitation to other interested people.
http://www.dsi.uniroma1.it/smart/
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with best regards from,
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Vishwas Patil
Dipartimento di Informatica
Universita degli Studi di Roma - La Sapienza
Via Salaria 113, 00198 Roma, Italy
Tel: +39-3341 02 8875 Fax: +39-06 8541 842
http://www.dsi.uniroma1.it/~patil ivis...@gmail.com
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Iron sharpens iron; scholar, the scholar. -- The Talmud