Recent Submissions

  • Analysing gender equality in Barcelona through (spatiotemporal) segmentation 

    Montero Mercadé, Lídia; Mejía-Dorantes, Lucía; Barceló Bugeda, Jaime (2022-07-19)
    Research report
    Open Access
    Citizens take part in different activities to satisfy their needs, to invest in their socio-economic progress, participate in social and health activities that improve their well-being. However, activity participation is ...
  • Redacción de un paper 

    Leiva Olmos, Jorge Rodrigo; Fonseca Casas, Pau; Ocaña Rebull, Jordi (2022-02-28)
    Research report
    Open Access
    Este trabajo desarrolla una metodología para alimentar de forma más automatizada un modelo de simulación. Para ello se generó un código de programación hecho con el lenguaje R que: 1) se conecta con base de datos; 2) valida ...
  • 5È. Audit clínic de l'ictus. Catalunya 2018/19 

    Salvat Plana, Mercè; Pérez de la Ossa, Natalia; Cortés Martínez, Jordi; Ayesta, Mercè; Gallofré, Guillem (2021-02-01)
    Research report
    Open Access
    S’han auditat 4.008 casos ingressats per ictus agut entre 2018 i 2019. El període d’estudi s’ha ampliat a 6 mesos, en períodes de 1 mes i mig al llarg de 12 mesos, similars per a tots els centres. L’obtenció prospectiva ...
  • On solving large-scale multistage stochastic problems with a new specialized interior-point approach 

    Castro Pérez, Jordi; Escudero Bueno, Laureano F.; Monge Ivars, Juan Francisco (2021-12)
    Research report
    Open Access
    A novel approach based on a specialized interior-point method (IPM) is presented for solving large-scale stochastic multistage continuous optimization problems, which represent the uncertainty in strategic multistage and ...
  • New interior-point approach for one- and two-class linear support vector machines using multiple variable splitting 

    Castro Pérez, Jordi (2021-12)
    Research report
    Open Access
    Multiple variable splitting is a general technique for decomposing problems by using copies of variables and additional linking constraints that equate their values. The resulting large optimization problem can be solved ...
  • Transport analytics approaches to the dynamic origin-destination estimation problem 

    Ros Roca, Xavier; Montero Mercadé, Lídia; Barceló Bugeda, Jaime; Noëkel, Klaus; Gentile, Guido (2020-10)
    Research report
    Restricted access - author's decision
    Dynamic traffic models require dynamic inputs, and one of the main inputs are the Dynamic Origin-Destinations (OD) matrices describing the variability over time of the trip patterns across the network. The Dynamic OD Matrix ...
  • An algorithm for the microaggregation problem using column generation 

    Gentile, Claudio; Spagnolo Arrizabalaga, Enric; Castro Pérez, Jordi (2020-06)
    Research report
    Open Access
    The field of Statistical Disclosure Control aims at reducing the risk of re-identification of an individualwhen disseminating data, and it is one of the main concerns of national statistical agencies. OperationsResearch ...
  • Introducing spaced mosaic plots 

    Fernández Martínez, Daniel; Arnold, Richard; Pledger, Shirley (2014-09-01)
    Research report
    Open Access
    Recent research has developed a group of likelihood-based finite mixture mod- els for a data matrix with ordinal data, establishing likelihood-based multivari- ate methods which applies fuzzy clustering via finite mixtures ...
  • Un compilador per l'UPCLISP 

    Riaño Ramos, David; Gibert, Karina; Torra Reventos, Vicenc; Cortés García, Claudio Ulises (1990)
    Research report
    Open Access
    El report recull el desenvolupament d'un compilador per a una versió de LISP pròpia de la UPC, l'UPCLISP. El procés de compilació va prenent una a una les funcions i després per a cadascuna d'elles fa una anàlisi de tipus ...
  • A new interior-point approach for large two-stage stochastic problems 

    Castro Pérez, Jordi; Lama Zubirán, Paula de la (2020-04)
    Research report
    Open Access
    Two-stage stochastic models give rise to very large optimization problems. Several approaches havebeen devised for efficiently solving them, including interior-point methods (IPMs). However, usingIPMs, the linking columns ...
  • Using interior point solvers for optimizing progressive lens models with spherical coordinates 

    Casanellas Peñalver, Glòria; Castro Pérez, Jordi (2019-05)
    Research report
    Open Access
    Designing progressive lenses is a complex problem that has beenpreviously solved by formulating an optimization model based on Cartesiancoordinates. In this work a new progressive lens model using spherical co-ordinates ...

View more