Sciweavers

43 search results - page 2 / 9
» Lower Bounds for Randomized and Quantum Query Complexity Usi...
Sort
View
CORR
2010
Springer
108views Education» more  CORR 2010»
13 years 4 months ago
Inverting a permutation is as hard as unordered search
We describe a reduction from the problem of unordered search (with a unique solution) to the problem of inverting a permutation. Since there is a straightforward reduction in the ...
Ashwin Nayak
STOC
2000
ACM
97views Algorithms» more  STOC 2000»
13 years 8 months ago
Quantum lower bounds by quantum arguments
We propose a new method for proving lower bounds on quantum query algorithms. Instead of a classical adversary that runs the algorithm with one input and then modifies the input,...
Andris Ambainis
STOC
2007
ACM
98views Algorithms» more  STOC 2007»
14 years 4 months ago
Negative weights make adversaries stronger
The quantum adversary method is one of the most successful techniques for proving lower bounds on quantum query complexity. It gives optimal lower bounds for many problems, has ap...
Peter Høyer, Troy Lee, Robert Spalek
APPROX
2008
Springer
89views Algorithms» more  APPROX 2008»
13 years 6 months ago
Quantum and Randomized Lower Bounds for Local Search on Vertex-Transitive Graphs
We study the problem of local search on a graph. Given a real-valued black-box function f on the graph's vertices, this is the problem of determining a local minimum of f--a v...
Hang Dinh, Alexander Russell
MFCS
1997
Springer
13 years 8 months ago
Resolution Proofs, Exponential Bounds, and Kolmogorov Complexity
We prove an exponential lower bound for the length of any resolution proof for the same set of clauses as the one used by Urquhart [13]. Our contribution is a significant simpli...
Uwe Schöning