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MFCS
2009
Springer
14 years 1 months ago
Branching Programs for Tree Evaluation
We introduce the tree evaluation problem, show that it is in LogDCFL (and hence in P), and study its branching program complexity in the hope of eventually proving a superlogarith...
Mark Braverman, Stephen A. Cook, Pierre McKenzie, ...
WDAG
1999
Springer
88views Algorithms» more  WDAG 1999»
13 years 11 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
MFCS
2009
Springer
13 years 11 months ago
An Improved Approximation Bound for Spanning Star Forest and Color Saving
We present a simple algorithm for the maximum spanning star forest problem. We take advantage of the fact that the problem is a special case of complementary set cover and we adapt...
Stavros Athanassopoulos, Ioannis Caragiannis, Chri...
SIROCCO
2007
13 years 8 months ago
Optimal Conclusive Sets for Comparator Networks
A set of input vectors S is conclusive if correct functionality for all input vectors is implied by correct functionality over vectors in S. We consider four functionalities of co...
Guy Even, Tamir Levi, Ami Litman
FOCS
2006
IEEE
14 years 23 days ago
On the Quantum Query Complexity of Local Search in Two and Three Dimensions
The quantum query complexity of searching for local optima has been a subject of much interest in the recent literature. For the d-dimensional grid graphs, the complexity has been...
Xiaoming Sun, Andrew Chi-Chih Yao