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ICASSP
2011
IEEE
14 years 10 months ago
Maximum likelihood ICA of quaternion Gaussian vectors
This work considers the independent component analysis (ICA) of quaternion random vectors. In particular, we focus on the Gaussian case, and therefore the ICA problem is solved by...
Javier Vía, Daniel P. Palomar, Luis Vielva,...
ICASSP
2011
IEEE
14 years 10 months ago
Named entity recognition from Conversational Telephone Speech leveraging Word Confusion Networks for training and recognition
Named Entity (NE) recognition from the results of Automatic Speech Recognition (ASR) is challenging because of ASR errors. To detect NEs, one of the options is to use a statistica...
Gakuto Kurata, Nobuyasu Itoh, Masafumi Nishimura, ...
ICASSP
2011
IEEE
14 years 10 months ago
Azimuth-elevation direction finding using power measurements from single antenna
This paper considers the problem of extending the single antenna power measurements based direction finding to the two-dimensional (2D) case, and proposes a method to estimate th...
Joni Polili Lie, Thierry Blu, Chong Meng Samson Se...
BILDMED
2011
225views Algorithms» more  BILDMED 2011»
14 years 10 months ago
Using Power Watersheds to Segment Benign Thyroid Nodules in Ultrasound Image Data
Thyroid nodule segmentation is a hard task due to different echo structures, textures and echogenicities in ultrasound (US) images as well as speckle noise. Currently, a typical c...
Eva N. K. Kollorz, Elli Angelopoulou, Michael Beck...
CORR
2011
Springer
172views Education» more  CORR 2011»
14 years 10 months ago
Uncovering the Temporal Dynamics of Diffusion Networks
Time plays an essential role in the diffusion of information, influence and disease over networks. In many cases we only observe when a node copies information, makes a decision ...
Manuel Gomez-Rodriguez, David Balduzzi, Bernhard S...