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SAT
2010
Springer
178views Hardware» more  SAT 2010»
14 years 3 months ago
Proof Complexity of Propositional Default Logic
Default logic is one of the most popular and successful formalisms for non-monotonic reasoning. In 2002, Bonatti and Olivetti introduced several sequent calculi for credulous and s...
Olaf Beyersdorff, Arne Meier, Sebastian Mülle...
PODC
2010
ACM
14 years 3 months ago
Group mutual exclusion in O(log n) RMR
We present an algorithm to solve the GROUP MUTUAL EXCLUSION problem in the cache-coherent (CC) model. For the same problem in the distributed shared memory (DSM) model, Danek and ...
Vibhor Bhatt, Chien-Chung Huang
PKC
2010
Springer
126views Cryptology» more  PKC 2010»
14 years 3 months ago
Multi-query Computationally-Private Information Retrieval with Constant Communication Rate
A fundamental privacy problem in the client-server setting is the retrieval of a record from a database maintained by a server so that the computationally bounded server remains ob...
Jens Groth, Aggelos Kiayias, Helger Lipmaa
APPROX
2007
Springer
80views Algorithms» more  APPROX 2007»
14 years 3 months ago
Coarse Differentiation and Multi-flows in Planar Graphs
We show that the multi-commodity max-flow/min-cut gap for series-parallel graphs can be as bad as 2, matching a recent upper bound [8] for this class, and resolving one side of a ...
James R. Lee, Prasad Raghavendra
SWAT
1994
Springer
117views Algorithms» more  SWAT 1994»
14 years 4 months ago
Lower Bounds for Dynamic Algorithms
We study the complexity of the dynamic partial sum problem in the cell-probe model. We give the model access to nondeterministic queries and prove that the problem remains hard. We...
Michael L. Fredman
SPAA
1993
ACM
14 years 4 months ago
Asymptotically Tight Bounds for Performing BMMC Permutations on Parallel Disk Systems
d Abstract) Thomas H. Cormen Leonard F. Wisniewski Department of Mathematics and Computer Science Dartmouth College We give asymptotically equal lower and upper bounds for the num...
Thomas H. Cormen, Leonard F. Wisniewski
ICALP
1992
Springer
14 years 4 months ago
Lower Bounds on the Complexity of Simplex Range Reporting on a Pointer Machine
Abstract Bernard Chazelle Department of Computer Science Princeton University Burton Rosenberg Department of Mathematics and Computer Science Dartmouth College We give a lower bou...
Bernard Chazelle, Burton Rosenberg
COMPGEOM
1992
ACM
14 years 4 months ago
On-Line Steiner Trees in the Euclidean Plane
Suppose we are given a sequence of n points in the Euclidean plane, and our objective is to construct, on-line, a connected graph that connects all of them, trying to minimize the...
Noga Alon, Yossi Azar
ICALP
1994
Springer
14 years 4 months ago
On the Cost of Recomputing: Tight Bounds on Pebbling with Faults
We introduce a formal framework to study the time and space complexity of computing with faulty memory. For the fault-free case, time and space complexities were studied using the...
Yonatan Aumann, Judit Bar-Ilan, Uriel Feige
VLDB
1997
ACM
97views Database» more  VLDB 1997»
14 years 4 months ago
The Complexity of Transformation-Based Join Enumeration
Query optimizers that explore a search space exhaustively using transformation rules usually apply all possible rules on each alternative, and stop when no new information is prod...
Arjan Pellenkoft, César A. Galindo-Legaria,...