ECCC
2010
13 years 11 months ago
2010
We show that it is possible to encode any communication protocol between two parties so that the protocol succeeds even if a (1/4 − ǫ) fraction of all symbols transmitted by th...
EJC
2007
14 years 12 days ago
2007
We study the notion of hypertree width of hypergraphs. We prove that, up to a constant factor, hypertree width is the same as a number of other hypergraph invariants that resemble...
DM
2008
14 years 15 days ago
2008
A vertex v of a graph G is a boundary vertex if there exists a vertex u such that the distance in G from u to v is at least the distance from u to any neighbour of v. We give the ...
SODA
2001
ACM
14 years 1 months ago
2001
ACM
Many massive graphs (such as the WWW graph and Call graphs) share certain universal characteristics which can be described by so-called the "power law". Here we determin...
FOCS
2004
IEEE
14 years 4 months ago
2004
IEEE
Let p > 1 be any fixed real. We show that assuming NP RP, there is no polynomial time algorithm that approximates the Shortest Vector Problem (SVP) in p norm within a constant ...
FIWAC
1993
14 years 4 months ago
1993
Montgomery’s algorithm [8], hereafter denoted Mn(·, ·), is a process for computing Mn(A, B) = ABN mod n where N is a constant factor depending only on n. Usually, AB mod n is o...
CRYPTO
2001
Springer
14 years 5 months ago
2001
Springer
Consider a scenario where an l-bit secret has been distributed among n players by an honest dealer using some secret sharing scheme. Then, if all players behave honestly, the secre...
CDC
2009
IEEE
14 years 5 months ago
2009
IEEE
Abstract— Despite its simplicity (two controllers and otherwise LQG), Witsenhausen’s counterexample is one of the long-standing open problems in stochastic distributed control....
ESA
2003
Springer
14 years 5 months ago
2003
Springer
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
IPTPS
2005
Springer
14 years 6 months ago
2005
Springer
In Peer-to-Peer networks based on consistent hashing and ring topology each server is responsible for an interval chosen (pseudo-)randomly on a circle. The topology of the network...