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COR
2006
98views more  COR 2006»
15 years 22 days ago
Exploiting semidefinite relaxations in constraint programming
Constraint programming uses enumeration and search tree pruning to solve combinatorial optimization problems. In order to speed up this solution process, we investigate the use of...
Willem Jan van Hoeve
ADHOCNOW
2004
Springer
15 years 6 months ago
Analysis of the Information Propagation Time Among Mobile Hosts
Consider k particles, 1 red and k −1 white, chasing each other on the nodes of a graph G. If the red one catches one of the white, it “infects” it with its color. The newly ...
Tassos Dimitriou, Sotiris E. Nikoletseas, Paul G. ...
STOC
2001
ACM
151views Algorithms» more  STOC 2001»
16 years 1 months ago
On the cell probe complexity of membership and perfect hashing
We study two fundamental static data structure problems, membership and perfect hashing, in Yao's cell probe model. The first space and bit probe optimal worst case upper bou...
Rasmus Pagh
97
Voted
WDAG
1999
Springer
88views Algorithms» more  WDAG 1999»
15 years 5 months ago
Generic Broadcast
This short paper establishes lower bounds on the time complexity of algorithms solving the generic broadcast problem. The paper shows that (a) to deliver messages in one round, no...
Fernando Pedone, André Schiper
SODA
2007
ACM
106views Algorithms» more  SODA 2007»
15 years 2 months ago
Embedding metrics into ultrametrics and graphs into spanning trees with constant average distortion
This paper addresses the basic question of how well can a tree approximate distances of a metric space or a graph. Given a graph, the problem of constructing a spanning tree in a ...
Ittai Abraham, Yair Bartal, Ofer Neiman