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ICALP
2009
Springer
14 years 9 months ago
Revisiting the Direct Sum Theorem and Space Lower Bounds in Random Order Streams
Estimating frequency moments and Lp distances are well studied problems in the adversarial data stream model and tight space bounds are known for these two problems. There has been...
Sudipto Guha, Zhiyi Huang
ICIP
2004
IEEE
14 years 10 months ago
Fast alignment of digital images using a lower bound on an entropy metric
We propose a registration algorithm based on successively refined quantization and an alignment metric derived from a minimal spanning tree entropy estimate. The metric favors edg...
Mert R. Sabuncu, Peter J. Ramadge
DFG
1992
Springer
14 years 27 days ago
Complexity of Boolean Functions on PRAMs - Lower Bound Techniques
Determining time necessary for computing important functions on parallel machines is one of the most important problems in complexity theory for parallel algorithms. Recently, a s...
Miroslaw Kutylowski
EOR
2007
76views more  EOR 2007»
13 years 8 months ago
Lower bounds and heuristics for the Windy Rural Postman Problem
In this paper we present several heuristic algorithms and a cutting-plane algorithm for the Windy Rural Postman Problem. This problem contains a big number of important Arc Routin...
Enrique Benavent, Alessandro Carrotta, Angel Corbe...
CORR
2002
Springer
102views Education» more  CORR 2002»
13 years 8 months ago
Quantum Lower Bound for Recursive Fourier Sampling
One of the earliest quantum algorithms was discovered by Bernstein and Vazirani, for a problem called Recursive Fourier Sampling. This paper shows that the Bernstein-Vazirani algo...
Scott Aaronson