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» On generalized Frame-Stewart numbers
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MLDM
2010
Springer
15 years 1 months ago
Fast Algorithms for Constant Approximation k-Means Clustering
In this paper we study the k-means clustering problem. It is well-known that the general version of this problem is NP-hard. Numerous approximation algorithms have been proposed fo...
Mingjun Song, Sanguthevar Rajasekaran
MOC
2010
15 years 1 months ago
Sharpness in rates of convergence for the symmetric Lanczos method
The Lanczos method is often used to solve a large and sparse symmetric matrix eigenvalue problem. There is a well-established convergence theory that produces bounds to predict the...
Ren-Cang Li
QUESTA
2010
86views more  QUESTA 2010»
15 years 1 months ago
Tandem queues with subexponential service times and finite buffers
We focus on tandem queues with subexponential service time distributions. We assume that number of customers in front of the first station is infinite and there is infinite room f...
Jung-Kyung Kim, Hayriye Ayhan
SIAMMAX
2010
123views more  SIAMMAX 2010»
15 years 1 months ago
Joint Spectral Characteristics of Matrices: A Conic Programming Approach
We propose a new approach to estimate the joint spectral radius and the joint spectral subradius of an arbitrary set of matrices. We first restrict our attention to matrices that ...
Vladimir Protasov, Raphaël M. Jungers, Vincen...
TSP
2010
15 years 1 months ago
Design of regular wavelets using a three-step lifting scheme
We propose structural multidimensional multi-channel filter banks with desirable numbers of vanishing moments for the analysis and synthesis banks. For a two-channel filter bank, w...
Ramin Eslami, Hayder Radha