Browsing by Author "Baeza-Yates, Ricardo"

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  • Graells-Garrido, Eduardo (Universitat Pompeu Fabra, 2015-05-25)
    Las tendencias actuales en la Web apuntan hacia la personalización de contenido, lo que no sería un problema en un mundo uniforme y sin sesgos, pero nuestro mundo no es ni uniforme ni libre de sesgos. En esta tesis planteamos ...
  • Martin, David; Aiello, Luca Maria; Grabowicz, Przemyslaw; Jaimes Larrarte, Alejandro; Baeza-Yates, Ricardo (SpringerOpen, 2014)
    Social groups play a crucial role in online social media because they form the basis for user participation and engagement. Although widely studied in their static and evolutionary aspects, no much attention has been devoted ...
  • Chiarandini, Luca (Universitat Pompeu Fabra, 2014-10-13)
    This thesis focuses on the analysis and modeling of web sessions, groups of requests made by a single user for a single navigation purpose. Understanding how people browse through websites is important, helping us to improve ...
  • Rello, Luz (Universitat Pompeu Fabra, 2014-06-27)
    Worldwide, 10% of the population has dyslexia, a cognitive disability that reduces readability and comprehension of written information. The goal of this thesis is to make text more accessible for people with dyslexia by ...
  • Rauschenberger, Maria (Universitat Pompeu Fabra, 2019-10-11)
    Els nens amb dislèxia tenen dificultats per aprendre a llegir i escriure. Sovint se'ls diagnostica després de fallar a l'escola, encara que la dislèxia no estigui relacionada amb la intel·ligència general. En aquesta tesi, ...
  • Trevisiol, Michele (Universitat Pompeu Fabra, 2014-10-15)
    This thesis explores in depth how to use the user browsing behavior, and in particular the referrer URL, in order to understand the interest of the users. The aim is, first, to understand the preferences of the users from ...
  • Zehlike, Meike; Bonchi, Francesco; Castillo, Carlos; Hajian, Sara; Megahed, Mohamed; Baeza-Yates, Ricardo (ACM Association for Computer Machinery, 2017)
    In this work, we define and solve the Fair Top-k Ranking problem, in which we want to determine a subset of k candidates from a large pool of n>>k candidates, maximizing utility (i.e., select the “best” candidates) subject ...
  • Sáez-Trumper, Diego (Universitat Pompeu Fabra, 2013-12-05)
    The objective of this thesis is to develop novel techniques to find relevant people in Online Social Networks (OSN). To that end, we consider different notions of relevance, taking the point of view of the OSN providers ...
  • Lehmann, Janette (Universitat Pompeu Fabra, 2015-02-26)
    L’objetiu d’aquesta tesi és aprofundir en el concepte de participació i compromís dels usuaris en pàgines web i analitzar com mesurar aquesta interacció. Comencem estudiant les mètriques del comportament online, les quals ...
  • Aslay, Çiğdem (Universitat Pompeu Fabra, 2016-12-16)
    This thesis constitutes one of the first investigations that lie at the intersection of social influence propagation, viral marketing, and social advertising. The objective of this thesis is to take the algorithmic aspects ...
  • Olivares Ríos, Ximena (Universitat Pompeu Fabra, 2011-03-02)
    Los sistemas online para compartir fotos proporcionan una valiosa fuente de contenidos generado por el usuario (UGC). La mayor a de los sistemas de re- cuperaci on de im agenes Web utilizan las anotaciones textuales para ...
  • Mehmood, Yasir (Universitat Pompeu Fabra, 2016-04-22)
    This thesis studies the roles of individuals and groups in the propagation of information in social networks. The primary aim is to investigate how users and groups impact information propagation and vice versa. In order ...
  • Recalde, Lorena (Universitat Pompeu Fabra, 2018-10-11)
    L'objectiu d'aquesta tesi és desenvolupar nous i diversos mètodes per modelar les preferències dels usuaris a les Xarxes Socials Online. Els mètodes proposats tenen com a finalitat ser aplicats en àrees de recerca com la ...
  • Nilo, Ricardo; Saffie, Carlos; Lilley, Kathryn; Baeza-Yates, Ricardo; Cambiazo, Verónica; Campos Vargas, Reinaldo; González, Mauricio; Meisel, Lee A.; Retamales, Julio; Silva, Herman; Orellana, Ariel (BioMed Central, 2010)
    Background: Peach fruit undergoes a rapid softening process that involves a number of metabolic changes. Storing fruit at low temperatures has been widely used to extend its postharvest life. However, this leads to undesired ...
  • Liaghat, Zeinab (Universitat Pompeu Fabra, 2017-03-09)
    Nowadays, the amount of available digital documents is rapidly growing, expanding at a considerable rate and coming from a variety of sources. Sources of unstructured and semi-structured information include the World Wide ...
  • Poblete Labra, Bárbara (Universitat Pompeu Fabra, 2009-10-01)
    El objetivo de esta tesis es estudiar diferentes aplicaciones de la minería de consultas Web para mejorar el ranking en motores de búsqueda, mejorar la recuperación de información en la Web y mejorar los sitios Web. La ...
  • González-Caro, Cristina (Universitat Pompeu Fabra, 2011-09-27)
    As the Web continues to increase both in size and complexity, Web search is a ubiquitous service that allows users to find all kind of information, resources, and activities. However, as the Web evolves so do the needs of ...
  • Tsalouchidou, Ioanna (Universitat Pompeu Fabra, 2018-10-11)
    The objective of this thesis is to provide a temporal analysis of the structural and interaction dynamics of large evolving graphs. In this thesis we propose new definitions of important graph metrics in order to include ...
  • Rauschenberger, Maria; Rello, Luz; Baeza-Yates, Ricardo; Bigham, Jeffrey P. (ACM Association for Computer Machinery, 2018)
    Detecting dyslexia is important because early intervention is key to avoid the negative e ects of dyslexia such as school failure. Most of the current approaches to detect dyslexia require expensive personnel (i.e. ...
  • Calderón-Benavides, Liliana (Universitat Pompeu Fabra, 2011-09-27)
    This doctoral work focuses on identifying and understanding the intents that motivate a user to perform a search on the Web. To this end, we apply machine learning models that do not require more information than the one ...