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141
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STOC
2010
ACM
168views Algorithms» more  STOC 2010»
16 years 2 months ago
Non-commutative circuits and the sum-of-squares problem
We initiate a direction for proving lower bounds on the size of non-commutative arithmetic circuits. This direction is based on a connection between lower bounds on the size of no...
Pavel Hrubes, Avi Wigderson and Amir Yehudayoff
131
Voted
ATVA
2009
Springer
100views Hardware» more  ATVA 2009»
15 years 12 months ago
Dynamic Observers for the Synthesis of Opaque Systems
: In this paper, we address the problem of synthesizing opaque systems. A secret predicate S over the runs of a system G is opaque to an external user having partial observability ...
Franck Cassez, Jérémy Dubreil, Herv&...
138
Voted
STACS
2007
Springer
15 years 11 months ago
Reachability in Unions of Commutative Rewriting Systems Is Decidable
We consider commutative string rewriting systems (Vector Addition Systems, Petri nets), i.e., string rewriting systems in which all pairs of letters commute. We are interested in r...
Mikolaj Bojanczyk, Piotr Hoffman
MOBICOM
2004
ACM
15 years 10 months ago
Practical robust localization over large-scale 802.11 wireless networks
We demonstrate a system built using probabilistic techniques that allows for remarkably accurate localization across our entire office building using nothing more than the built-...
Andreas Haeberlen, Eliot Flannery, Andrew M. Ladd,...
186
Voted
COMPGEOM
2007
ACM
15 years 7 months ago
Between umbra and penumbra
Computing shadow boundaries is a difficult problem in the case of non-point light sources. A point is in the umbra if it does not see any part of any light source; it is in full l...
Julien Demouth, Olivier Devillers, Hazel Everett, ...
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