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- Fernando D. Lorenzo-García, Antonio G. Ravelo-García, Juan L. Navarro-Mesa, Sofía I. Martín-González, Pedro J. Quintana-Morales, Eduardo Hernández-Pérez
- 2006 IEEE International Conference on Acoustics…
- 2006

We present a new method for improving the classification score in the problem of binary hypothesis testing where the classes are modeled by a Gaussian mixture. We define a cost function which is based on the Chernoff distance and from it a transformation matrix is estimated that maximizes the separation between the classes. Once defined the cost function we… (More)

- Eduardo Hernández-Pérez, Juan L. Navarro-Mesa, Sofía I. Martín-González, Pedro J. Quintana-Morales, Antonio G. Ravelo-García
- 2011 19th European Signal Processing Conference
- 2011

We address the problem of estimating the path loss factor and its integration in RSS-based localization algorithms with wireless sensor networks. We propose an algorithm that relies on a stochastic characterization of the uncertainties in the propagation model. Due to that the path loss factor is unknown and the localization is only based on RSS… (More)

- Antonio G. Ravelo-García, Juan L. Navarro-Mesa, +5 authors Eduardo Hernández-Pérez
- Entropy
- 2015

In this paper the permutation entropy (PE) obtained from heart rate variability (HRV) is analyzed in a statistical model. In this model we also integrate other feature extraction techniques, the cepstrum coefficients derived from the same HRV and a set of band powers obtained from the electrocardiogram derived respiratory (EDR) signal. The aim of the model… (More)

- Antonio G. Ravelo-García, Juan L. Navarro-Mesa, +5 authors Gabriel Juliá-Serdá
- EUROCAST
- 2013

- Sofía I. Martín-González, Juan L. Navarro-Mesa, Gabriel Juliá-Serdá, Jan F. Kraemer, Niels Wessel, Antonio G. Ravelo-García
- Computers in biology and medicine
- 2017

We introduce a sleep apnea characterization and classification approach based on a Heart Rate Variability (HRV) feature selection process, thus focusing on the characterization of the underlying process from a cardiac rate point of view. Therefore, we introduce linear and nonlinear variables, namely Cepstrum Coefficients (CC), Filterbanks (Fbank) and… (More)

- Juan Luis Navarro Mesa, Eduardo Hernández-Pérez, Antonio G. Ravelo-García, Pedro J. Quintana-Morales, Sofía I. Martín-González
- 2012 IEEE 7th Sensor Array and Multichannel…
- 2012

We present a new method for DOA estimation that relies on the assumption that the sources can be modelled as ARMA. A matrix formulation is introduced in the frequency domain so that the available information from the sources can be incorporated thus allowing the DOA estimation with a few sensors and achieve good estimates with acceptable computational… (More)

We address the problem of improving the classification score in Bayesian binary hypothesis tests. We propose two methods to perform a dimensionality reduction by means of a linear matrix transformation from an original feature space to a new one. The criteria of the two methods is expressed in two different cost functions. The first function is based on the… (More)

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