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SIAMJO
2008
93views more  SIAMJO 2008»
13 years 11 months ago
Recursive Trust-Region Methods for Multiscale Nonlinear Optimization
A class of trust-region methods is presented for solving unconstrained nonlinear and possibly nonconvex discretized optimization problems, like those arising in systems governed by...
Serge Gratton, Annick Sartenaer, Philippe L. Toint
SPEECH
1998
171views more  SPEECH 1998»
13 years 10 months ago
Heteroscedastic discriminant analysis and reduced rank HMMs for improved speech recognition
We present the theory for heteroscedastic discriminant analysis (HDA), a model-based generalization of linear discriminant analysis (LDA) derived in the maximum-likelihood framewo...
Nagendra Kumar, Andreas G. Andreou
SIAMCO
2002
124views more  SIAMCO 2002»
13 years 10 months ago
On Reachability Under Uncertainty
The paper studies the problem of reachability for linear systems in the presence of uncertain input disturbances that may also be interpreted as the action of an adversary in a ga...
Alexander B. Kurzhanski, Pravin Varaiya
JSAC
2008
95views more  JSAC 2008»
13 years 9 months ago
Cognitive Medium Access: Constraining Interference Based on Experimental Models
In this paper we design a cognitive radio that can coexist with multiple parallel WLAN channels while abiding by an interference constraint. The interaction between both systems is...
Stefan Geirhofer, Lang Tong, Brian M. Sadler
PAMI
2010
143views more  PAMI 2010»
13 years 9 months ago
Iris Recognition: On the Segmentation of Degraded Images Acquired in the Visible Wavelength
—Iris recognition imaging constraints are receiving increasing attention. There are several proposals to develop systems that operate in the visible wavelength and in less constr...
Hugo Proença