Now showing items 21-40 of 43

    • INFORMÀTICA. Control 1. Curs 2018-2019 [Q1] 

      Román Jiménez, José Antonio; Merenciano Saladrigas, Josep Maria; Urmeneta Coletas, Jordi; Baixeries i Juvillà, Jaume; Ortiz Martínez, Daniel; Mata Miquel, Cristian (Universitat Politècnica de Catalunya, 2018-10-31)
      Exam
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    • INFORMÀTICA. Control 2 (Curs 2019-2020) 

      Hernández Gómez, M. Angeles; Román Jiménez, José Antonio; Casas Fernández, Bernardino; Baixeries i Juvillà, Jaume (Universitat Politècnica de Catalunya, 2020-01-09)
      Exam
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    • INFORMÀTICA. Control 2 (Curs 2020-2021) - Q1 

      Román Jiménez, José Antonio; Hernández Gómez, M. Angeles; Baixeries i Juvillà, Jaume; Valls Mancha, Hugo; Bufistov, Dmitry (Universitat Politècnica de Catalunya, 2021-01-14)
      Exam
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    • INFORMÀTICA. Control 2. Curs 2018-2019 [Q1] 

      Mata Miquel, Cristian; Ortiz Martínez, Daniel; Román Jiménez, José Antonio; Merenciano Saladrigas, Josep Maria; Urmeneta Coletas, Jordi; Baixeries i Juvillà, Jaume (Universitat Politècnica de Catalunya, 2019-01-14)
      Exam
      Restricted access to the UPC academic community
    • INFORMÀTICA. Reavaluació / Final extraordinari (Curs 2019-2020) 

      Hernández Gómez, M. Angeles; Casas Fernández, Bernardino; Baixeries i Juvillà, Jaume; Román Jiménez, José Antonio (Universitat Politècnica de Catalunya, 2020-01-24)
      Exam
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    • Interpretable prediction of mortality in liver transplant recipients based on machine learning 

      Zhang, Xiao; Gavaldà Mestre, Ricard; Baixeries i Juvillà, Jaume (Elsevier, 2022-12)
      Article
      Open Access
      Background: Accurate prediction of the mortality of post-liver transplantation is an important but challenging task. It relates to optimizing organ allocation and estimating the risk of possible dysfunction. Existing risk ...
    • New Closure Operators and Lattice Representations for Multivalued Dependencies and Related Expressions 

      Baixeries i Juvillà, Jaume; Balcázar Navarro, José Luis (2005)
      Conference report
      Open Access
      In Database Theory, Multivalued Dependencies are the main tool to define the Fourth Normal Form and, as such, their inference problem has been deeply studied; two related notions appearing in that study are a syntactical ...
    • Pattern Structures and Concept Lattices for Data Mining and Knowledge Processing 

      Kaytoue, Mehdi; Codocedo, Victor; Aleksey, Buzmakov; Baixeries i Juvillà, Jaume (Springer International Publishing, 2015)
      Conference report
      Open Access
      This article aims at presenting recent advances in Formal Concept Analysis (2010-2015), especially when the question is dealing with complex data (numbers, graphs, sequences, etc.) in domains such as databases (functional ...
    • Polysemy and brevity versus frequency in language 

      Casas Fernández, Bernardino; Hernández Fernández, Antonio; Catala Roig, Neus; Ferrer Cancho, Ramon; Baixeries i Juvillà, Jaume (Elsevier, 2019-11-01)
      Article
      Open Access
      The pioneering research of G. K. Zipf on the relationship between word frequency and other word features led to the formulation of various linguistic laws. The most popular is Zipf’s law for word frequencies. Here we focus ...
    • Random models of Menzerath-Altmann law in genomes 

      Baixeries i Juvillà, Jaume; Hernández Fernández, Antonio; Ferrer Cancho, Ramon (2012-03)
      Article
      Open Access
      Recently, a random breakage model has been proposed to explain the negative correlation between mean chromosome length and chromosome number that is found in many groups of species and is consistent with Menzerath–Altmann ...
    • Size of the whole versus number of parts in genomes 

      Hernández Fernández, Antonio; Baixeries i Juvillà, Jaume; Forns, Núria; Ferrer Cancho, Ramon (2011-08)
      Article
      Open Access
      It is known that chromosome number tends to decrease as genome size increases in angiosperm plants. Here the relationship between number of parts (the chromosomes) and size of the whole (the genome) is studied for other ...
    • Testing the robustness of laws of polysemy and brevity versus frequency 

      Hernández Fernández, Antonio; Casas Fernández, Bernardino; Ferrer Cancho, Ramon; Baixeries i Juvillà, Jaume (Springer, 2016)
      Conference report
      Open Access
      The pioneering research of G.K. Zipf on the relationship between word frequency and other word features led to the formulation of various linguistic laws. Here we focus on a couple of them: the meaning-frequency law, i.e. ...
    • The challenges of statistical patterns of language: the case of Menzerath's law in genomes 

      Ferrer Cancho, Ramon; Forns Fradera, Núria; Hernández Fernández, Antonio; Bel Enguix, Gemma; Baixeries i Juvillà, Jaume (2013-01)
      Article
      Open Access
      The importance of statistical patterns of language has been debated over decades. Although Zipf's law is perhaps the most popular case, recently, Menzerath's law has begun to be involved. Menzerath's law manifests in ...
    • The evolution of polysemy in child language 

      Casas Fernández, Bernardino; Catala Roig, Neus; Ferrer Cancho, Ramon; Baixeries i Juvillà, Jaume (World Scientific Publishing Company, 2014)
      Conference report
      Open Access
      It has been hypothesized that early stages of language have left traces of simpler forms of language, for instance, in child language (Bickerton, 1990; Jackendoff, 1999). Word learning biases in children (Saxton, 2010) ...
    • The evolution of the exponent of Zipf's law in language ontogeny 

      Baixeries i Juvillà, Jaume; Elvevag, Brita; Ferrer Cancho, Ramon (2013-03-13)
      Article
      Open Access
      It is well-known that word frequencies arrange themselves according to Zipf's law. However, little is known about the dependency of the parameters of the law and the complexity of a communication system. Many models of the ...
    • The exponent of Zipf’s law in language ontogeny. 

      Baixeries i Juvillà, Jaume; Ferrer Cancho, Ramon (World Scientific Publishing, 2012)
      Conference report
      Open Access
    • The parameters of Menzerath-Altmann law in genomes 

      Baixeries i Juvillà, Jaume; Hernández Fernández, Antonio; Forns Fradera, Núria; Ferrer Cancho, Ramon (Taylor & Francis, 2013)
      Article
      Open Access
      The relationship between the size of the whole and the size of the parts in language and music is known to follow the Menzerath-Altmann law at many levels of description (morphemes, words, sentences, …). Qualitatively, the ...
    • The polysemy of the words that children learn over time 

      Casas Fernández, Bernardino; Catala Roig, Neus; Ferrer Cancho, Ramon; Hernández Fernández, Antonio; Baixeries i Juvillà, Jaume (2018-12)
      Article
      Open Access
      Here we study polysemy as a potential learning bias in vocabulary learning in children. We employ a massive set of transcriptions of conversations between children and adults in English, to analyze the evolution of mean ...
    • Unified characterization of symmetric dependencies with lattices 

      Baixeries i Juvillà, Jaume; Balcázar Navarro, José Luis (2006)
      Conference report
      Restricted access - publisher's policy
      Symmetric dependencies, or MultiValued Dependencies-like, are those dependencies that follow the deduction rules of MultiValued Dependencies (MVD’s). These are MVD-clauses, Degenerate MultiValued Dependencies (DMVD’s), and ...
    • Using concept lattices to mine functional dependencies 

      Baixeries i Juvillà, Jaume (2003-05)
      Research report
      Open Access
      Concept Lattices have been proved to be a valuable tool to represent the knowlegde in a database. In this paper we show how functional dependencies in databases can be extracted using Concept Lattices, not preprocessing ...