LARCA - Laboratori d'Algorísmia Relacional, Complexitat i Aprenentatge: Enviaments recents

Ara es mostren els items 25-36 de 337

    • Zipf’s laws of meaning in Catalan 

      Catala Roig, Neus; Baixeries i Juvillà, Jaume; Ferrer Cancho, Ramon; Padró, Lluís; Hernández Fernández, Antonio (Public Library of Science (PLOS), 2021-12-16)
      Article
      Accés obert
      In his pioneering research, G. K. Zipf formulated a couple of statistical laws on the relationship between the frequency of a word with its number of meanings: the law of meaning distribution, relating the frequency of a ...

    • Minimum projective linearizations of trees in linear time 

      Alemany Puig, Lluís; Esteban Ángeles, Juan Luis; Ferrer Cancho, Ramon (2022-03)
      Article
      Accés obert
      The Minimum Linear Arrangement problem (MLA) consists of finding a mapping π from vertices of a graph to distinct integers that minimizes {u,v}∈E |π(u) − π(v)|. In that setting, vertices are often assumed to lie on a ...

    • Infographics, a better medium than plain text for increasing knowledge 

      Hernández Fernández, Antonio; Morera Vidal, Francesc (2022)
      Article
      Accés obert
      Infographics in social networks present more elaborate proposals than simple text. In this study we analyze the general patterns of Twitter infographic messages to determine its main characteristics. Subsequently, we ...

    • Can Menzerath’s law be a criterion of complexity in communication? 

      González Torre, Ivan; Debowski, Lukasz; Hernández Fernández, Antonio (Public Library of Science (PLOS), 2021-08-20)
      Article
      Accés obert
      Menzerath’s law is a quantitative linguistic law which states that, on average, the longer is a linguistic construct, the shorter are its constituents. In contrast, Menzerath-Altmann’s law (MAL) is a precise mathematical ...

    • Fostering sustainability and critical thinking through debate: a case study 

      Rodríguez Dono, Alfonso; Hernández Fernández, Antonio (2021-06)
      Article
      Accés obert
      Transversal competences such as sustainability or critical thinking have become more important in the last decades in University teaching. The objective of this article is to assess the effectiveness of debate as a teaching ...

    • Qualitative and quantitative examples of natural and artificial phenomena 

      Hernández Fernández, Antonio (2021-08)
      Article
      Accés obert
      The dichotomy between the qualitative and the quantitative has been a classic throughout the history of science. As will be seen, this dichotomy permeates all ontological levels of reality. In this work, phenomenological ...

    • Knowledge-based segmentation to improve accuracy and explainability in non-technical losses detection 

      Calvo Ibáñez, Albert; Coma Puig, Bernat; Carmona Vargas, Josep; Arias Vicente, Marta (2020-10-30)
      Article
      Accés obert
      Utility companies have a great interest in identifying energy losses. Here, we focus on Non-Technical Losses (NTL), which refer to losses caused by utility theft or meter errors. Typically, utility companies resort to ...

    • Bounds of the sum of edge lengths in linear arrangements of trees 

      Ferrer Cancho, Ramon; Gómez Rodríguez, Carlos; Esteban Ángeles, Juan Luis (Institute of Physics (IOP), 2021-02-11)
      Article
      Accés obert
      A fundamental problem in network science is the normalization of the topological or physical distance between vertices, which requires understanding the range of variation of the unnormalized distances. Here we investigate ...

    • Distinct flavors of Zipf's law and its maximum likelihood fitting: Rank-size and size-distribution representations 

      Corral Cano, Álvaro; Serra Mochales, Isabel; Ferrer Cancho, Ramon (American Institute of Physics (AIP), 2020-11-10)
      Article
      Accés obert
      In recent years, researchers have realized the difficulties of fitting power-law distributions properly. These difficulties are higher in Zipfian systems, due to the discreteness of the variables and to the existence of ...

    • Reappraising the distribution of the number of edge crossings of graphs on a sphere 

      Alemany Puig, Lluís; Mora Giné, Mercè; Ferrer Cancho, Ramon (Institute of Physics (IOP), 2020-08-01)
      Article
      Accés obert
      Many real transportation and mobility networks have their vertices placed on the surface of the Earth. In such embeddings, the edges laid on that surface may cross. In his pioneering research, Moon analyzed the distribution ...

    • Speech pause distribution as an early marker for Alzheimer’s disease 

      Pastoriza-Domínguez, Patricia; González Torre, Ivan; Diéguez-Vide, Faustino; Gómez Ruiz, María Isabel; Geladó Muñoz, Sandra; Bello-López, Joan; Ávila-Rivera, Asunción; Matías-Guiu, Jordi; Pytel Córdoba, Vanesa; Hernández Fernández, Antonio (2021-01)
      Report de recerca
      Accés obert
      Background: Pause duration analysis is a common feature in the study of discourse in Alzheimer’s disease (AD) and may also be helpful for its early detection. However, studies involving patients at the preclinical stage ...

    • Weak-type and end-point norm estimates for Hardy operators 

      Boza Rocho, Santiago; Soria de Diego, Francisco Javier (2020-11)
      Article
      Accés obert
      We explicitly calculate the best constants for weak-type and other end-point estimates for the Hardy operator and its adjoint. In particular, we find the right value for decreasing power weights, fixing some previously ...