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» The Complexity of Polynomial-Time Approximation
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DIALM
2004
ACM
100views Algorithms» more  DIALM 2004»
15 years 12 months ago
Virtual coordinates for ad hoc and sensor networks
In many applications of wireless ad hoc and sensor networks, position-awareness is of great importance. Often, as in the case of geometric routing, it is sufficient to have virtua...
Thomas Moscibroda, Regina O'Dell, Mirjam Wattenhof...
CAV
2004
Springer
96views Hardware» more  CAV 2004»
15 years 12 months ago
Widening Arithmetic Automata
Model checking of infinite state systems is undecidable, therefore, there are instances for which fixpoint computations used in infinite state model checkers do not converge. Gi...
Constantinos Bartzis, Tevfik Bultan
CRYPTO
2004
Springer
79views Cryptology» more  CRYPTO 2004»
15 years 12 months ago
Multicollisions in Iterated Hash Functions. Application to Cascaded Constructions
Abstract. In this paper, we study the existence of multicollisions in iterated hash functions. We show that finding multicollisions, i.e. r-tuples of messages that all hash to the...
Antoine Joux
FSTTCS
2004
Springer
15 years 12 months ago
Testing Geometric Convexity
We consider the problem of determining whether a given set S in Rn is approximately convex, i.e., if there is a convex set K ∈ Rn such that the volume of their symmetric differe...
Luis Rademacher, Santosh Vempala
ICA
2004
Springer
15 years 12 months ago
Blind Deconvolution Using the Relative Newton Method
We propose a relative optimization framework for quasi maximum likelihood blind deconvolution and the relative Newton method as its particular instance. Special Hessian structure a...
Alexander M. Bronstein, Michael M. Bronstein, Mich...