Recent Submissions

  • Male and female politicians on Twitter: A machine learning approach 

    Beltran Jorba, Javier; Gallego Dobón, Aina; Huidobro Torres, Alba; Romero Merino, Enrique; Padró, Lluís (2020-03-17)
    Article
    Restricted access - publisher's policy
    How does the language of male and female politicians differ when they communicate directly with the public on social media? Do citizens address them differently? We apply Lasso logistic regression models to identify the ...
  • Red queen dynamics, competition and critical points in a model of RNA virus quasispecies 

    Vicente Solé, Ricardo; Ferrer Cancho, Ramon; González García, Isabel; Quer, Josep; Domingo Solans, Esteban (1999-05-07)
    Article
    Restricted access - publisher's policy
    RNA viruses offer a unique opportunity for the study of evolution at the molecular level. Recent experiments involving clonal populations of RNA viruses have shown that competition among virus strains of approximately equal ...
  • Multiple infection dynamics has pronounced effects on the fitness of RNA viruses 

    Miralles Borrego, Rosario; Ferrer Cancho, Ramon; Vicente Solé, Ricardo; Moya, Andres; Elena, Santiago (2001-07)
    Article
    Restricted access - publisher's policy
    Several factors play a role during the replication and transmission of RNA viruses. First, as a consequence of their enormous mutation rate, complex mixtures of genomes are generated immediately after infection of a new ...
  • Some word order biases from limited brain resources: A mathematical approach 

    Ferrer Cancho, Ramon (2008)
    Article
    Open Access
    In this paper, we propose a mathematical framework for studying word order optimization. The framework relies on the well-known positive correlation between cognitive cost and the Euclidean distance between the elements ...
  • Some limits of standard linguistic typology: the case of Cysouw's models for the frequencies of the six possible orderings of S, V and O 

    Ferrer Cancho, Ramon (2008)
    Article
    Open Access
    This article is a critical analysis of Michael Cysouw's comment "Linear order as a predictor of word order regularities".
  • The frequency spectrum of finite samples from the intermittent silence process 

    Ferrer Cancho, Ramon; Gavaldà Mestre, Ricard (2009-04)
    Article
    Open Access
    It has been argued that the actual distribution of word frequencies could be reproduced or explained by generating a random sequence of letters and spaces according to the so-called intermittent silence process. The same ...
  • Efficient coding in dolphin surface behavioral patterns 

    Ferrer Cancho, Ramon; Lusseau, David (2009-05)
    Article
    Open Access
    We show that the law of brevity, i.e. the tendency of words to shorten as their frequency increases, is also found in dolphin surface behavioral patterns. As far as we know, this is the first evidence of the law in another ...
  • The self-organization of genomes 

    Ferrer Cancho, Ramon; Forns Fradera, Núria (2010-05)
    Article
    Open Access
    Menzerath-Altmann law is a general law of human language stating, for instance, that the longer a word, the shorter its syllables. With the metaphor that genomes are words and chromosomes are syllables, we examine if genomes ...
  • Constant conditional entropy and related hypotheses 

    Ferrer Cancho, Ramon; Debowski, Lukasz; Moscoso del Prado Martín, Fermín (Institute of Physics (IOP), 2013-07-04)
    Article
    Open Access
    Constant entropy rate (conditional entropies must remain constant as the sequence length increases) and uniform information density (conditional probabilities must remain constant as the sequence length increases) are two ...
  • The law of brevity in macaque vocal communication is not an artifact of analysing mean call durations 

    Semple, Stuart; Hsu, Minna J.; Agoramoorthy, Govindasamy; Ferrer Cancho, Ramon (2013-07-04)
    Article
    Open Access
    Words follow the law of brevity, i.e. more frequent words tend to be shorter. From a statistical point of view, this qualitative definition of the law states that word length and word frequency are negatively correlated. ...
  • The span of correlations in dolphin whistle sequences 

    Ferrer Cancho, Ramon; McCowan, Brenda (Institute of Physics (IOP), 2012-06-11)
    Article
    Open Access
    Long-range correlations are found in symbolic sequences from human language, music and DNA. Determining the span of correlations in dolphin whistle sequences is crucial for shedding light on their communicative complexity. ...
  • Hubiness, length, crossings and their relationships in dependency trees 

    Ferrer Cancho, Ramon (RAM-Verlag, 2013-05-29)
    Article
    Open Access
    Here tree dependency structures are studied from three different perspectives: their degree variance (hubiness), the mean dependency length and the number of dependency crossings. Bounds that reveal pairwise dependencies ...

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