Documents de Congressos: Enviaments recents
Ara mostrant els elements 81-100 de 174
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Improving the Quality of EEG Data in Patients With Alzheimers Disease Using ICA
(2008)Does Independent Component Analysis (ICA) denature EEG signals? We applied ICA to two groups of subjects (mild Alzheimer patients and control subjects). The aim of this study was to examine whether ... -
Reducción del vector de características de reconocimiento facial
(2008)In this present work, we are proposing a characteristics reduction system for a facial biometric identification system, using transformed domains such as discrete cosine transformed (DCT) and discrete ... -
Improved Sparse Bump Modeling for Electrophysiological Data
(2008)Bump modeling is a method used to extract oscillatory bursts in electrophysiological signals, who are most likely to be representative of local synchronies. In this paper we present an improved sparse ... -
An Evolutionary Approach for Blind Inversion of Wiener Systems
(2007)The problem of blind inversion of Wiener systems can be considered as a special case of blind separation of post-nonlinear instantaneous mixtures. In this paper, we present an approach for nonlinear ... -
Estimación de funciones no lineales en mezclas post-no lineales
(2007)This paper proposes a new method for blindly inverting a nonlinear mapping which transforms a sum of random variables. This is the case of post-nonlinear (PNL) source separation mixtures. The importance ... -
EEG Windowed statitical wavelet deviation for estimation of muscular artifacts
(2007)Electroencephalographic (EEG) recordings are, most of the times, corrupted by spurious artifacts, which should be rejected or cleaned by the practitioner. As human scalp EEG screening is error-prone, ... -
Speaker recognition improvement using blind inversion of distortions
(2004)In this paper we propose the inversion of nonlinear distortions in order to improve the recognition rates of a speaker recognizer system. We study the effect of saturations on the test signals, trying ... -
Blind source separation for solid-state chemical Sensors Arrays
(2004)Electronic noses and tongues are two recent examples in chemical sensing that employ statistical array techniques in order to overcome the intrinsic limitations of current solid-state chemical sensors ... -
Improving algorithm speed in PNL mixture separation and Wiener system inversion
(2003)This paper proposes a very simple method for increasing the algorithm speed for separating sources from PNL mixtures or invertingWiener systems. The method is based on a pertinent initialization of ... -
Algoritmos interactivos para la separación de fuentes y deconvolución de canal mediante Java
(2000)El objetivo de estos programas es crear una herramienta que nos permita, de una manera fácil, entender mejor la separación de fuentes y la deconvolución de canal . Por eso se presenta el diseño, ... -
A Gradient based algorithm for blind inversion of Wiener System using multi-variate score functions
(2003)A Wiener system is a linear time-invariant filter, followed by an invertible nonlinear distortion. Assuming that the input signal is an independent and identically distributed (iid) sequence, we ... -
Blind Inversion of Wiener System using a minimization-projection (MP) approach
(2003)In this paper, a new algorithm for blind inversion of Wiener systems is presented. The algorithm is based on minimization of mutual information of the output samples. This minimization is done through ... -
Simulated Annealing, High-Order Statistics and Mutual Information for Separation of Sources
(2001)In this article, the fusion of a stochastic metaheuristic as Simulated Annealing (SA) with classical criteria for convergence of Blind Separation of Sources (BSS), is shown. Although the topic of ... -
Source separation techniques applied to linear prediction
(2000)The prediction filters are well known models for signal estimation, in communications, control and many others areas. The classical method for deriving linear prediction coding (LPC) filters is often ... -
Aprendizagem baseada em Jogos Digitais Entrevistas com professores que utilizam jogos digitais em suas práticas educativas
(2013)In contrast to other media like TV or cinema, digital games are unique and different because they offer a persuasive rhetoric. This investigation introduces the cases of two primary school teachers ... -
Juegos digitales y alfabetización digital: Entrevistas con profesores de primaria que utilizan juegos en la práctica Educativa
(2013)A diferencia de otros medios como la televisión o el cine, los juegos digitales se presentan como un medio único y diferente que proporcionan una nueva forma de retórica persuasiva. En este trabajo, se ... -
Acercamiento a las características de los videojuegos y sus beneficios en el aprendizaje
(2013)En este artículo se presenta una aproximación hacia algunas de las características implícitas en los videojuegos que pueden ayudar a desarrollar beneficios en los procesos de aprendizaje: reglas, metas ... -
A Simple Approximation for Fast Nonlinear Deconvolution
(2011)When dealing with nonlinear blind deconvolution, complex mathematical estimations must be done giving as a result very slow algorithms. This is the case, for example, in speech processing or in microarray ... -
EEG based user recognition using BUMP modelling
(2013)In this paper the use of electroencephalogram (EEG) as biometric identifier is investigated. The use of EEG within the biometric framework has already been introduced in the recent past although it has ...