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AMC
2011
15 years 1 months ago
Approximate inverse-free preconditioners for Toeplitz matrices
In this paper, we propose approximate inverse-free preconditioners for solving Toeplitz systems. The preconditioners are constructed based on the famous Gohberg-Sememcul formula. ...
You-Wei Wen, Wai-Ki Ching, Michael Ng
SMA
2010
ACM
181views Solid Modeling» more  SMA 2010»
15 years 1 months ago
Threshold selection in jump-discriminant filter for discretely observed jump processes
Threshold estimation is one of the useful techniques in the inference for jump-type stochastic processes from discrete observations. In this method, a jump-discriminant filter is ...
Yasutaka Shimizu
ASIACRYPT
2009
Springer
16 years 1 months ago
Smooth Projective Hashing and Password-Based Authenticated Key Exchange from Lattices
Abstract. We describe a public-key encryption scheme based on lattices — specifically, based on the hardness of the learning with error (LWE) problem — that is secure against ...
Jonathan Katz, Vinod Vaikuntanathan
CGI
2004
IEEE
15 years 10 months ago
BlobTree Trees
In recent years several methods for modeling botanical trees have been proposed. The geometry and topology of tree skeletons can be well described by L-systems; however, there are...
Callum Galbraith, Peter MacMurchy, Brian Wyvill
ISPD
2006
ACM
158views Hardware» more  ISPD 2006»
16 years 17 days ago
Effective linear programming based placement methods
Linear programming (LP) based methods are attractive for solving the placement problem because of their ability to model Half-Perimeter Wirelength (HPWL) and timing. However, it h...
Sherief Reda, Amit Chowdhary