Sciweavers

ICASSP
2011
IEEE
13 years 3 months ago
POMDP concept policies and task structures for hybrid dialog management
We address several challenges for applying statistical dialog managers based on Partially Observable Markov Models to real world problems: to deal with large numbers of concepts, ...
Sebastian Varges, Giuseppe Riccardi, Silvia Quarte...
ICASSP
2011
IEEE
13 years 3 months ago
Fast network querying algorithm for searching large-scale biological networks
Network querying aims to search a large network for subnetwork regions that are similar to a given query network. In this paper, we propose a novel algorithm for querying large sc...
Sayed Mohammad Ebrahim Sahraeian, Byung-Jun Yoon
ICASSP
2011
IEEE
13 years 3 months ago
A conditional model for triggering understanding actions in a speech understanding system
A conditional model is introduced for triggering understanding actions that correct errors of frame hypothesization and composition. Experimental evidence is provided using the Fr...
Frédéric Duvert, Renato de Mori
ICASSP
2011
IEEE
13 years 3 months ago
A variable step size evolutionary affine projection algorithm
It is well known that the affine projection algorithm (APA) offers a good tradeoff between convergence rate/tracking and computational complexity. Recently, the evolutionary APA (...
Felix Albu, Constantin Paleologu, Jacob Benesty
ICASSP
2011
IEEE
13 years 3 months ago
2D Markovian SS codes flatten time-frequency distribution of signals in asynchronous Gabor division CDMA systems
We propose a Gabor division (GD)-CDMA system which permits time and frequency offsets. Negatively correlated time- and frequency-domain spreading codes have shown to reduce the va...
Tohru Kohda, Yutaka Jitsumatsu, Kazuyuki Aihara
ICASSP
2011
IEEE
13 years 3 months ago
Generating avatar's facial expressions from emotional states in daily conversation
A framework for generating facial expressions from emotional states in daily conversation is described. The framework allows avatars to express the speaker’s state not just prot...
Hiroki Mori, Ko Oshima, Makoto Nakamura
ICASSP
2011
IEEE
13 years 3 months ago
An optimal filtering for unmasked noise prevention
A new estimator, optimal in the frequency domain with respect to the masking properties of the human auditory system, is proposed. This new filtering technique prevents the emerg...
Asmaa Amehraye, Lionel Fillatre, Dominique Pastor
ICASSP
2011
IEEE
13 years 3 months ago
Error exponents for decentralized detection in feedback architectures
We consider the decentralized Bayesian binary hypothesis testing problem in feedback architectures, in which the fusion center broadcasts information based on the messages of some...
Wee-Peng Tay, John N. Tsitsiklis
ICASSP
2011
IEEE
13 years 3 months ago
Multiple speaker tracking using a microphone array by combining auditory processing and a gaussian mixture cardinalized probabil
Tracking speakers is an important application in smart environments. Acoustic tracking using microphone arrays is a challenging task due to two major reasons: On the one hand, mul...
Axel Plinge, Daniel Hauschildt, Marius H. Hennecke...
ICASSP
2011
IEEE
13 years 3 months ago
Gaussian approximation of the LLR distribution for the ML and partial marginalization MIMO detectors
We derive a Gaussian approximation of the LLR distribution conditioned on the transmitted signal and the channel matrix for the soft-output via partial marginalization MIMO detect...
Mirsad Cirkic, Daniel Persson, Erik G. Larsson, Ja...