Now showing items 1-20 of 33

  • A fast CTA method without the complicating binary decisions 

    Castro Pérez, Jordi; González Alastrué, José Antonio (2013)
    Conference report
    Open Access
  • A linear optimization based method for data privacy in statistical tabular data 

    Castro Pérez, Jordi; González Alastrué, José Antonio (2017-05-23)
    External research report
    Open Access
    National Statistical Agencies routinely disseminate large amounts of data. Prior to dissemination these data have to be protected to avoid releasing confidential information. Controlled tabular adjustment (CTA) is one of ...
  • A linear optimization based method for data privacy in statistical tabular data 

    Castro Pérez, Jordi; González Alastrué, José Antonio (2017-06-15)
    Article
    Open Access
    National Statistical Agencies routinely disseminate large amount of data. Prior to dissemination these data have to be protected to avoid releasing confidential information. Controlled tabular adjustment (CTA) is one of ...
  • Aspectos estocásticos en la coordinación hidrotérmica a largo plazo 

    González Alastrué, José Antonio (Universitat Politècnica de Catalunya, 1997-12-19)
    Doctoral thesis
    Open Access
    El proyecto de tesis titulado "Aspectos estocásticos en la coordinación hidrotérmica a largo plazo" es el resultado de un trabajo de investigación enmarcado en el campo de la generación de electricidad y trata, más ...
  • Assessing Shiny apps through student feedback: recommendations from a qualitative study 

    González Alastrué, José Antonio; Lopez, Mireia; Cobo Valeri, Erik; Cortés Martínez, Jordi (2018-09)
    Article
    Restricted access - publisher's policy
    Teaching statistics has benefited from Java applets, the successful technology that appeared in the late 90s and which allowed real interactivity on an Internet browser. Combining dynamic functionality with the web provides ...
  • A tool for analyzing and fixing infeasible RCTA instances 

    Castro Pérez, Jordi; González Alastrué, José Antonio (2010-09)
    Article
    Restricted access - publisher's policy
    Minimum-distance controlled tabular adjustment methods (CTA), and its restricted variants (RCTA), is a recent perturbative approach for tabular data protection. Given a table to be protected, the purpose of RCTA is to find ...
  • A web-based learning tool improves student performance in statistics: a randomized masked trial 

    González Alastrué, José Antonio; Jover, Lluís; Cobo Valeri, Erik; Muñoz Gracia, María del Pilar (2010-03)
    Article
    Open Access
    Background: e-status is a web-based tool able to generate different statistical exercises and to provide immediate feedback to students’ answers. Although the use of Information and Communication Technologies (ICTs) is ...
  • Block coordinate descent decomposition for statistical data protection using controlled tabular adjustment 

    González Alastrué, José Antonio; Castro Pérez, Jordi (2009-10)
    External research report
    Restricted access - confidentiality agreement
    Tabular data is routinely released by national statistical agencies (NSA) to disseminate aggregated information from some particular microdata. Prior to publication, these tables have to be treated to preserve information ...
  • Calidad y transparencia de Fisioterapia mediante guías de publicación 

    Cobo Valeri, Erik; Moher, David; Boutron, Isabelle; González Alastrué, José Antonio (2015-05-01)
    Article
    Restricted access - publisher's policy
  • E-status: a web tool for learning by doing exercises 

    González Alastrué, José Antonio; Muñoz Gracia, María del Pilar (University of Creta, 2002)
    Conference report
    Open Access
    The paper introduces the project led by a team of teachers to assist students learn statistics. The goal is to build a tool able to present mathematical problems and to correct the students´ answers. The problems may include ...
  • E-status: entorno web para la generación y resolución de problemas numéricos 

    González Alastrué, José Antonio; Muñoz Gracia, María del Pilar; Cobo Valeri, Erik; Martí Recober, Manuel (2005-02)
    Conference report
    Open Access
    Se presenta un sistema basado en plataformas web que pretende ayudar a los estudiantes a aprender estadística mediante la generación de problemas individualizados de tipo numérico con corrección instantánea. Como los ...
  • Fix-and-relax approaches for controlled tabular adjustment 

    Baena, Daniel; Castro Pérez, Jordi; González Alastrué, José Antonio (2015-06-01)
    Article
    Open Access
    Controlled tabular adjustment (CIA) is a relatively new protection technique for tabular data protection. CTA formulates a mixed integer linear programming problem, which is challenging for tables of moderate size. Even ...
  • Formal assessment of an innovative web-based tool designed to improve student performance in statistics 

    González Alastrué, José Antonio; Jover, Lluís; Cobo Valeri, Erik; Muñoz Gracia, María del Pilar (2006-07)
    Conference report
    Open Access
    We have developed a web-based tool, called e-status, that is able to generate individually different statistical or mathematical problems and to correct the students´ answers. The tool is well appreciated by the students ...
  • Importancia de la potencia y la hipótesis en el valor p 

    Cortés Martínez, Jordi; Casals, Martí; Langohr, Klaus; González Alastrué, José Antonio (Elsevier, 2015-12-09)
    Article
    Open Access
    Los lectores de Medicina Clínica conocen bien la importancia de definir bien el denominador de una proporción para estimar una probabilidad: “No es lo mismo la probabilidad de que un católico sea Papa que la de que un Papa ...
  • Non experimental evaluation of a computer assisted tool 

    Cobo Valeri, Erik; González Alastrué, José Antonio; Muñoz Gracia, María del Pilar; Dieguez, José Manuel; Piñeiro, Martiño (2006)
    Conference lecture
    Restricted access - publisher's policy
    E-status is a web-based tool designed to improve learning in statistics introductory courses. On a separate research (Gonzalez et al, 2006) we present an experimental evaluation on the performance improvement among students ...
  • Plataformes digitals per aprendre activa i cooperativament 

    González Alastrué, José Antonio; Marco Almagro, Lluís; Rodero de Lamo, Lourdes; Sánchez, Josep A.; Clot, Guillem; Silvestre, Antoni (2009-02-12T12:58:16Z)
    Conference lecture / Conference report
    Open Access
    e-status es una plataforma web que propone ejercicios a los estudiantes que se corrigen automáticamente. Un mismo ejercicio puede repetirse todas las veces que se desea, puesto que los datos son diferentes cada vez. Al ...
  • Present and future research on controlled tabular adjustment 

    Castro Pérez, Jordi; González Alastrué, José Antonio (2011)
    Conference report
    Open Access
    Controlled tabular adjustment (CTA) can be classi ed within the group of approaches that perturb output data (i.e., tabular data), unlike other methods that focus on the original microdata. Being a post-tabular data ...
  • Problemas numéricos con corrección automática: qué se puede y qué se debe hacer 

    González Alastrué, José Antonio (Ministerio de Defensa, 2014)
    Conference lecture
    Open Access
    La presente comunicación describe los objetivos, organización, proceso y divulgación de un taller orientado a proporcionar a docentes del campo de la estadística y la investigación operativa (y posiblemente de otros campos) ...
  • Software libre: una oportunidad para los investigadores 

    Rius Carrasco, Roser; González Alastrué, José Antonio (2011)
    Article
    Restricted access - publisher's policy
    El mundo del software está viviendo en el último decenio una peculiar revolución que tiene como principal actor el software libre. El fenómeno es de tal magnitud que recientemente Mark Driver, de la acreditada consultora ...
  • Symmetric vs asymmetric protection levels in SDC methods for tabular data 

    Baena, Daniel; Castro Pérez, Jordi; González Alastrué, José Antonio (Springer, 2018-09)
    Article
    Open Access
    Protection levels on sensitive cells—which are key parameters of any statistical disclosure control method for tabular data—are related to the difficulty of any attacker to recompute a good estimation of the true cell ...