Reports de recerca
Recent Submissions
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Interpreting machine learning models for survival analysis: a study of cutaneous melanoma using the SEER database
(2023-06-15)
Research report
Open AccessIn this study, we train and compare three types of machine learning algorithms for Survival Analysis: Random Survival Forest, DeepSurv and DeepHit, using the SEER database to model cutaneous malignant melanoma. Additionally, ... -
Analysing gender equality in Barcelona through (spatiotemporal) segmentation
(2022-07-19)
Research report
Open AccessCitizens 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 ... -
Alimentación de un modelo de simulación mediante una conexión entre un sistema de información, R y SDLPS
(2022-02-28)
Research report
Open AccessEste 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
(2021-02-01)
Research report
Open AccessS’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
(2021-12)
Research report
Open AccessA 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
(2021-12)
Research report
Open AccessMultiple 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
(2020-10)
Research report
Restricted access - author's decisionDynamic 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
(2020-06)
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)
Research report
Open Access -
Introducing spaced mosaic plots
(2014-09-01)
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)
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)
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 ...
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