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EJASP
2010
92views more  EJASP 2010»
15 years 1 months ago
Optimized Paraunitary Filter Banks for Time-Frequency Channel Diagonalization
We adopt the concept of channel diagonalization to time-frequency signal expansions obtained by DFT filter banks. As a generalization of the frequency domain channel representatio...
Ziyang Ju, Thomas Hunziker, Dirk Dahlhaus
193
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JAIR
2010
130views more  JAIR 2010»
15 years 29 days ago
Interactive Cost Configuration Over Decision Diagrams
In many AI domains such as product configuration, a user should interactively specify a solution that must satisfy a set of constraints. In such scenarios, offline compilation of ...
Henrik Reif Andersen, Tarik Hadzic, David Pisinger
213
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JMLR
2010
148views more  JMLR 2010»
15 years 28 days ago
Approximate Inference on Planar Graphs using Loop Calculus and Belief Propagation
We introduce novel results for approximate inference on planar graphical models using the loop calculus framework. The loop calculus (Chertkov and Chernyak, 2006b) allows to expre...
Vicenç Gómez, Hilbert J. Kappen, Mic...
133
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JMLR
2010
112views more  JMLR 2010»
15 years 28 days ago
Reduced-Rank Hidden Markov Models
Hsu et al. (2009) recently proposed an efficient, accurate spectral learning algorithm for Hidden Markov Models (HMMs). In this paper we relax their assumptions and prove a tighte...
Sajid M. Siddiqi, Byron Boots, Geoffrey J. Gordon
SIAMMA
2010
43views more  SIAMMA 2010»
15 years 27 days ago
Nonlinear Stability of Semidiscrete Shocks for Two-Sided Schemes
The nonlinear stability of travelling Lax shocks in semidiscrete conservation laws involving general spatial forward-backward discretization schemes is considered. It is shown tha...
Margaret Beck, Hermen Jan Hupkes, Björn Sands...