Reports de recerca: Recent submissions
Now showing items 1-12 of 83
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An algorithm for the microaggregation problem using column generation
(2020-06)
External research report
Open AccessThe 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 ... -
KLASS: estudi d'un sistema d'ajuda al tractament estadístic de grans bases de dades (Master Thesis)
(1991-03)
External research report
Open Access -
Introducing spaced mosaic plots
(2014-09-01)
External research report
Open AccessRecent 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
(1990)
External research report
Open AccessEl 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
(2020-04)
External research report
Open AccessTwo-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
(2019-05)
External research report
Open AccessDesigning 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 ... -
An assigment free data driven approach to the dynamic origin destination matrix estimation problem
(2020-02-05)
External research report
Open AccessDynamic 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 ... -
Simulació de la mobilitat pel pas del tramvia per l’avinguda Diagonal (Francesc Macià – Pl. de les Glòries)
(2017-05)
External research report
Open AccessL’1 de març de 2016, l’Ajuntament de Barcelona i la Generalitat van signar el protocol de col·laboració per impulsar la connexió de les dues xarxes de tramvia, que estableix que l’Ajuntament determinarà el traçat de la ... -
A specialized interior-point algorithm for huge minimum convex cost flows in bipartite networks
(2019-01-28)
External research report
Open AccessThe computation of the Newton direction is the most time consuming step of interior-point methods. This direction was efficiently computed by a combination of Cholesky factorizations and conjugate gradients in a specialized ... -
MEET-UP: Suport als estudiants amb TEA en estadis inicials a la UPC
(2019-01-22)
External research report
Open AccessL’objectiu és posar en marxa un pilot anomenat Meet-Up per acollir a partir del Juliol del 2017 a nous estudiants de la UPC afectats de TEA, mitjançant una sessió d’acollida inicial, amb explicació de la plataforma Moodle ... -
Notes on the measure of the structural similarity of OD matrices
(2018-12-07)
External research report
Open Access -
A specialized interior-point algorithm for huge minimum convex cost flows in bipartite networks
(2018-11)
External research report
Open Access
