Enviaments recents

  • Acoustic sequences in non-human animals: a tutorial review and prospectus 

    Kershenbaum, Arik; Blumstein, Daniel T.; Roch, Marie A.; Ferrer Cancho, Ramon (2016-02)
    Article
    Accés obert
    Animal acoustic communication often takes the form of complex sequences, made up of multiple distinct acoustic units. Apart from the well-known example of birdsong, other animals such as insects, amphibians, and mammals ...
  • The optimality of attaching unlinked labels to unlinked meanings 

    Ferrer Cancho, Ramon (2017-01-09)
    Article
    Accés obert
    Vocabulary learning by children can be characterized by many biases. When encountering a new word, children as well as adults, are biased towards assuming that it means something totally different from the words that ...
  • Emergence of linguistic laws in human voice 

    González Torre, Iván; Luque Serrano, Bartolo; Lacasa, Lucas; Luque, Jordi; Hernández Fernández, Antonio (Macmillan Publishers, 2017-03-08)
    Article
    Accés obert
    Linguistic laws constitute one of the quantitative cornerstones of modern cognitive sciences and have been routinely investigated in written corpora, or in the equivalent transcription of oral corpora. This means that ...
  • A construction of continuous-time ARMA models by iterations of Ornstein-Uhlenbeck processes 

    Arratia Quesada, Argimiro Alejandro; Cabaña, Ana Alejandra; Cabaña Perez, Enrique (Institut d'Estadística de Catalunya, 2016-12)
    Article
    Accés obert
    We present a construction of a family of continuous-time ARMA processes based on p iterations of the linear operator that maps a Lévy process onto an Ornstein-Uhlenbeck process. The construction resembles the procedure to ...
  • Simplicity, relativizations, and nondeterminism 

    Balcázar Navarro, José Luis (1985-05)
    Article
    Accés obert
    Relativizations of complexity classes in which simple sets exist are considered. A recursive oracle is constructed relative to which a simple set exists for NP. Some other general theorems are proven, showing that the time ...
  • Learning definite Horn formulas from closure queries 

    Arias Vicente, Marta; Balcázar Navarro, José Luis; Tîrnauca, Cristina (2017-01-07)
    Article
    Accés obert
    A definite Horn theory is a set of n-dimensional Boolean vectors whose characteristic function is expressible as a definite Horn formula, that is, as conjunction of definite Horn clauses. The class of definite Horn theories ...
  • Compression and the origins of Zipf's law for word frequencies 

    Ferrer Cancho, Ramon (2016-11-01)
    Article
    Accés obert
    Here we sketch a new derivation of Zipf's law for word frequencies based on optimal coding. The structure of the derivation is reminiscent of Mandelbrot's random typing model but it has multiple advantages over random ...
  • Crossings as a side effect of dependency lengths 

    Ferrer Cancho, Ramon; Gómez Rodríguez, Carlos (2016-11-01)
    Article
    Accés obert
    The syntactic structure of sentences exhibits a striking regularity: dependencies tend to not cross when drawn above the sentence. We investigate two competing explanations. The traditional hypothesis is that this trend ...
  • The infochemical core 

    Hernández Fernández, Antonio; Ferrer Cancho, Ramon (2016-06-07)
    Article
    Accés restringit per política de l'editorial
    Vocalizations, and less often gestures, have been the object of linguistic research for decades. However, the development of a general theory of communication with human language as a particular case requires a clear ...
  • A reply to Kubota and Levine on gapping 

    Valentín Fernández Gallart, José Oriol; Morrill, Glyn (2017-02)
    Article
    Accés restringit per política de l'editorial
    In a series of papers Kubota and Levine give an account of gapping and determiner gapping in terms of hybrid type logical grammar, including anomalous scopal interactions with auxiliaries and negative quantifiers. We make ...

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