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CRYPTO
2010
Springer
110views Cryptology» more  CRYPTO 2010»
14 years 11 months ago
An Efficient and Parallel Gaussian Sampler for Lattices
At the heart of many recent lattice-based cryptographic schemes is a polynomial-time algorithm that, given a `high-quality' basis, generates a lattice point according to a Ga...
Chris Peikert
ICASSP
2010
IEEE
14 years 10 months ago
Near-field adaptive beamforming and source localization in the spacetime frequency domain
We revisit the topics of near-field adaptive beamforming and source localization following an alternative approach based on a spatiotemporal spectral representation of the acoust...
Francisco Pinto, Martin Vetterli
CORR
2006
Springer
151views Education» more  CORR 2006»
14 years 10 months ago
Graph Laplacians and their convergence on random neighborhood graphs
Given a sample from a probability measure with support on a submanifold in Euclidean space one can construct a neighborhood graph which can be seen as an approximation of the subm...
Matthias Hein, Jean-Yves Audibert, Ulrike von Luxb...
CGF
2005
121views more  CGF 2005»
14 years 10 months ago
Efficient Rendering of Local Subsurface Scattering
A novel approach is presented to efficiently render local subsurface scattering effects. We introduce an importance sampling scheme for a practical subsurface scattering model. It...
Tom Mertens, Jan Kautz, Philippe Bekaert, Frank Va...
TSP
2008
178views more  TSP 2008»
14 years 10 months ago
Digital Computation of Linear Canonical Transforms
Abstract--We deal with the problem of efficient and accurate digital computation of the samples of the linear canonical transform (LCT) of a function, from the samples of the origi...
A. Koc, Haldun M. Özaktas, Cagatay Candan, M....