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» Local Computation: Lower and Upper Bounds
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DCC
2010
IEEE
14 years 2 months ago
On Computation of Performance Bounds of Optimal Index Assignment
Channel-optimized index assignment of source codewords is arguably the simplest way of improving transmission error resilience, while keeping the source and/or channel codes intac...
Xiaolin Wu, Hans D. Mittelmann, Xiaohan Wang, Jia ...
TIT
2010
107views Education» more  TIT 2010»
13 years 2 months ago
Information inequalities for joint distributions, with interpretations and applications
Upper and lower bounds are obtained for the joint entropy of a collection of random variables in terms of an arbitrary collection of subset joint entropies. These inequalities gene...
Mokshay M. Madiman, Prasad Tetali
COCO
1993
Springer
133views Algorithms» more  COCO 1993»
13 years 11 months ago
On Span Programs
We introduce a linear algebraic model of computation, the Span Program, and prove several upper and lower bounds on it. These results yield the following applications in complexit...
Mauricio Karchmer, Avi Wigderson
LATA
2009
Springer
14 years 2 months ago
Automata on Gauss Words
In this paper we investigate the computational complexity of knot theoretic problems and show upper and lower bounds for planarity problem of signed and unsigned knot diagrams repr...
Alexei Lisitsa, Igor Potapov, Rafiq Saleh
PODC
2009
ACM
14 years 8 months ago
Tight bounds for clock synchronization
d Abstract] Christoph Lenzen Computer Engineering and Networks Laboratory (TIK) ETH Zurich, 8092 Zurich, Switzerland lenzen@tik.ee.ethz.ch Thomas Locher Computer Engineering and N...
Christoph Lenzen, Thomas Locher, Roger Wattenhofer