Enviaments recents

  • Selection of correction candidates for the normalization of Spanish user generated content 

    Melero, Maite; Ruiz Costa-Jussà, Marta; Lambert, Patrik; Quixal, Martí (2016-01-01)
    Article
    Accés obert
    We present research aiming to build tools for the normalization of User-Generated Content (UGC). We argue that processing this type of text requires the revisiting of the initial steps of Natural Language Processing, since ...
  • Assessment of the effect of the financial crisis on agents’ expectations through symbolic regression 

    Claveria, Oscar; Monte Moreno, Enrique; Torra Porras, Salvador (2016-12-16)
    Article
    Accés restringit per política de l'editorial
    Agents’ perceptions on the state of the economy can be affected during economic crises. Tendency surveys are the main source of agents’ expectations. The main objective of this study is to assess the impact of the 2008 ...
  • Modelling tourism demand to Spain with machine learning techniques. The impact of forecast horizon on model selection 

    Claveria, Oscar; Torra Porras, Salvador; Monte Moreno, Enrique (2016-12-01)
    Article
    Accés obert
    This study assesses the influence of the forecast horizon on the forecasting performance of several machine learning techniques. We compare the fo recastaccuracy of Support Vector Regression (SVR) to Neural Network (NN) ...
  • The AXIOM software layers 

    Álvarez, Carlos; Ayguadé Parra, Eduard; Bosch Pons, Jaume; Bueno Hedo, Javier; Cherkashin, Artem; Filgueras Izquierdo, Antonio; Jiménez González, Daniel; Martorell Bofill, Xavier; Navarro, Nacho; Vidal, Miquel; Theodoropoulos, Dimitris; Pnevmatikatos, Dionisis; Catani, Davide; Oro Garcia, David; Fernandez Prades, Carles; Segura, Carlos; Rodriguez Saeta, Javier; Hernando Pericás, Francisco Javier; Scordino, Claudio; Gai, Paolo; Passera, Pierluigi; Pomella, Alberto; Bettin, Nicola; Rizzo, Antonio; Giorgi, Roberto (2016-11-01)
    Article
    Accés restringit per política de l'editorial
    AXIOM project aims at developing a heterogeneous computing board (SMP-FPGA).The Software Layers developed at the AXIOM project are explained.OmpSs provides an easy way to execute heterogeneous codes in multiple cores. ...
  • Type 2 diabetes screening test by means of a pulse oximeter 

    Monte Moreno, Enrique; Anyo Luján, María José; Torres Rusiñol, Montse; Juarez Fernández, Paqui; Núñez Manrique, Pilar; Aragón Triviño, Cristina; Pedrosa Miquel, Magda; Álvarez-Rodríguez, Marife; González-Burguillos, María José (2016-04-20)
    Article
    Accés obert
    In this paper, we propose a method for screening for the presence of type 2 diabetes by means of the signal obtained from a pulse oximeter. The screening system consists of two parts; the first analyses the signal ...
  • Blind multiuser detection with array observations 

    Rodríguez Fonollosa, Javier; Zvonar, Z; Rodríguez Fonollosa, José Adrián; Catala, J (1998-01)
    Article
    Accés obert
    Cochannel interference is usually a major limitation to the performance of mobile wireless systems. Examples of different forms of cochannel interference include multi-access interference in CDMA systems and cochannel ...
  • Filtering the time sequences of spectral parameters for speech recognition 

    Nadeu Camprubí, Climent; Paches, Pau; Biing-Hwang, Juang (1997-09)
    Article
    Accés restringit per política de l'editorial
    In automatic speech recognition, the signal is usually represented by a set of time sequences of spectral parameters (TSSPs) that model the temporal evolution of the spectral envelope frame-to-frame. Those sequences are ...
  • Speech recognition in a noisy car environment based on LP of the one-sided autocorrelation sequence and robust similarity measuring techniques 

    Hernando Pericás, Francisco Javier; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo (1997-02)
    Article
    Accés restringit per política de l'editorial
    The performance of the existing speech recognition systems degrades rapidly in the presence of background noise. A novel representation of the speech signal, which is based on Linear Prediction of the One-Sided Autocorrelation ...
  • Adaptive blind system identification using weighted cumulant slices 

    Vidal Manzano, José; Rodríguez Fonollosa, José Adrián (1996-03)
    Article
    Accés restringit per política de l'editorial
    Many linear methods have been proposed in the literature to blindly estimate the ARMA parameters of a time series using HOS. Nevertheless, they are mainly off-line and not much has been done in the adaptive case. The method ...
  • Automatic speech recognition with deep neural networks for impaired speech 

    España-i-Bonet, Cristina; Rodríguez Fonollosa, José Adrián (2016-11-23)
    Article
    Accés restringit per política de l'editorial
    Automatic Speech Recognition has reached almost human performance in some controlled scenarios. However, recognition of impaired speech is a difficult task for two main reasons: data is (i) scarce and (ii) heterogeneous. ...

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