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  • Real-time interpolation of global ionospheric maps by means of sparse representation 

    Yang, Heng; Monte Moreno, Enrique; Hernández Pajares, Manuel; Roma Dollase, David (2021-06-12)
    Article
    Restricted access - publisher's policy
    In this paper, we propose a method for the generation of real-time global ionospheric map (RT-GIM) of vertical total electron content (VTEC) from GNSS measurements. The need for interpolation arises from the fact that the ...

  • Multilingual natural language processing: Towards universal translation 

    Ruiz Costa-Jussà, Marta (Springer Nature, 2021-05)
    Article
    Restricted access - publisher's policy
    State of the art neural network approaches enable massive multilingual translation. How close are we to universal translation in any language?

  • An analysis of gender bias studies in natural language processing 

    Ruiz Costa-Jussà, Marta (Springer Science and Business Media LLC, 2019-10-14)
    Article
    Open Access
    Artificial intelligence systems copy and amplify existing societal biases, a problem that by now is widely acknowledged and studied. But is current research of gender bias in natural language processing actually moving ...

  • Polar electron content from GPS data-based global ionospheric maps: assessment, case studies, and climatology 

    Lyu, Haixia; Hernández Pajares, Manuel; Aragón Ángel, Maria Angeles; Monte Moreno, Enrique; An, Jiachun; Liu, Jingbin (2020-04-22)
    Article
    Open Access
    The electron content distribution of the north and south polar ionosphere from 2001 to the beginning of 2019 is analyzed by using the UQRG global ionospheric map (GIM) of vertical total electron content (VTEC), computed ...

  • Estimation of polar depletion regions by VTEC contrast and watershed enhancing 

    Monte Moreno, Enrique; Hernández Pajares, Manuel; Lyu, Haixia; Yang, Heng; Aragon-Angel, Angela (Institute of Electrical and Electronics Engineers (IEEE), 2021)
    Article
    Open Access
    This article presents a method for determining near-Pole ionization depletion regions and troughs from global navigation satellite system (GNSS) vertical total electron content (VTEC) maps. To define the regions, we use ...

  • Frequency domain analysis and filtering of business and consumer survey expectations 

    Claveria González, Oscar; Monte Moreno, Enrique; Torra Porras, Salvador (Elsevier, 2021-08)
    Article
    Restricted access - publisher's policy
    The main objective of this study is two-fold. First, we aim to detect the underlying existing periodicities in business and consumer survey expectations by means of spectral analysis. We use the Welch method to extract the ...

  • From bilingual to multilingual neural-based machine translation by incremental training 

    Escolano Peinado, Carlos; Ruiz Costa-Jussà, Marta; Rodríguez Fonollosa, José Adrián (2020-08-02)
    Article
    Open Access
    A common intermediate language representation in neural machine translation can be used to extend bilingual systems by incremental training. We propose a new architecture based on introducing an interlingual loss as an ...

  • Converses al voltant de la intel·ligència artificial en clau catalana 

    Ruiz Costa-Jussà, Marta; Melero Nogues, Maite (2020-12)
    Article
    Open Access
    La intel·ligència artificial mou milions d’euros i ocupa una part important de les agendes polítiques i estratègiques dels governs. En aquest article reflexionem sobre aquest concepte difús i ho fem a través de tres ...

  • AMALEU: una representación universal del lenguaje basada en aprendizaje automático 

    Ruiz Costa-Jussà, Marta (2020-09)
    Article
    Open Access
    El objetivo del proyecto AMALEU es aprender una representación común para diferentes idiomas. Se pretende tener una representación común para la lengua oral y una para la lengua escrita. AMALEU, de dos años de duración, ...

  • Multilingual and interlingual semantic representations for natural language processing: a brief introduction 

    Ruiz Costa-Jussà, Marta; España-Bonet, Cristina; Fung, Pascale; Smith, Noah (2020)
    Article
    Open Access
    We introduce the Computational Linguistics special issue on Multilingual and Interlingual Semantic Representations for Natural Language Processing. We situate the special issue’s five articles in the context of our ...

  • A genetic programming approach for estimating economic sentiment in the Baltic countries and the European Union 

    Claveria González, Oscar; Monte Moreno, Enrique; Torra Porras, Salvador (2021-01-18)
    Article
    Open Access
    In this study, we introduce a sentiment construction method based on the evolution of survey-based indicators. We make use of genetic algorithms to evolve qualitative expectations in order to generate country-specific ...

  • Work-efficient parallel non-maximum suppression kernels 

    Oro García, David; Fernandez Tena, Carles; Martorell Bofill, Xavier; Hernando Pericás, Francisco Javier (Wiley Heyden, 2020-08-21)
    Article
    Restricted access - publisher's policy
    In the context of object detection, sliding-window classifiers and single-shot convolutional neural network (CNN) meta-architectures typically yield multiple overlapping candidate windows with similar high scores around ...

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