Causality without Estimands: from Causal Estimation to Black-Box Introspection 

    Parafita, Álvaro (Date of defense: 2023-05-12)

    [eng] The notion of cause and effect is fundamental to our understanding of the real world; ice cream sales correlate with jellyfish stings (both increase during summer), but a ban on ice cream could hardly stop jellyfishes. ...

    Contribución al estudio de las extensiones galoisianas de grupo diedral 

    Pascual Xufré, Griselda, 1926-2001 (Date of defense: 1975-01-01)

    En esta memoria, nos proponemos dar alguna contribución al estudio de la aritmética de las extensiones de cuerpos, de números, galoisianas, no abelianas, cuyo grupo de Galois G sea de uno de los tipos siguientes: diedral ...

    Deep Learning-based Solutions to Improve Diagnosis in Wireless Capsule Endoscopy 

    Laiz Treceño, Pablo (Date of defense: 2023-12-12)

    [eng] Deep Learning (DL) models have gained extensive attention due to their remarkable performance in a wide range of real-world applications, particularly in computer vision. This achievement, combined with the increase ...

    Degenerate invariant tori in KAM theory 

    Pello García, Juan (Date of defense: 2023-11-22)

    [eng] The thesis develops an incipient methodology to study bifurcations of invariant curves in one-dimensional and quasiperiodic discrete systems, based on translated curve theorems and KAM theory.The (extended) phase ...

    Discurso sobre la teoria general del movimiento en las máquinas : desarrollado por D. Lauro Clariana en el ejercicio del doctorado correspondiente a la sección de Ciencias exactas 

    Clariana Ricart, Lauro, 1842-1916 (Date of defense: 1873-01-01)

    Lauro Clariana Ricart (Barcelona, 1842-1916) fue un matemático e ingeniero industrial español. Obtuvo en 1873 la cátedra de matemáticas del Instituto de Tarragona. Ese mismo año se graduó de doctor en Ciencias Exactas. ...

    Diseño de arquitecturas de aprendizaje profundo para la determinación de cubiertas sobre el territorio y el estudio de series temporales 

    García Rodríguez, Carlos (Date of defense: 2023-07-04)

    [spa] Las cubiertas del suelo son el resultado de factores naturales, socioeconómicos y de su utilización por parte de las personas en el tiempo y en el espacio. La información sobre las dinámicas del territorio es esencial ...

    Energy and random point processes on two-point homogeneous manifolds 

    Torre Estévez, Víctor de la (Date of defense: 2023-11-24)

    [eng] We study discrete energy minimization problems on two-point homogeneous manifolds. Since finding N-point configurations with optimal energy is highly challenging, recent approaches have involved examining random point ...

    Estudi sobre la dinàmica dels sistemes estel·lars amb simetria cilíndrica 

    Sala Mirabet, Ferran (Date of defense: 1986-01-01)

    Se ha desarrollado un modelo galáctico no estacionario con simetria cilíndrica basado en las hipótesis de Chandrasekhar, habiéndose caracterizado las funciones que lo determinan. La forma obtenida para el potencial ha ...

    Fundamentos de geometría pseudoconforme en "n" dimensiones 

    Planas Corbella, José María, 1910-1936 (Date of defense: 1934-06-16)

    En una serie de recientes trabajos, donde se estudian a fondo muchos problemas esenciales de la moderna teoría de las funciones de dos variables complejas, F. SEVERI ha establecido las bases de una fundamentación geométrica ...

    Generalizability in multi-centre cardiac image analysis with machine learning 

    Campello Román, Víctor Manuel (Date of defense: 2023-12-15)

    [eng] The field of Artificial Intelligence (AI) has undergone a revolution in recent years with the advent of more efficient computing hardware and well-documented software for model development. Many fields are being ...

    Optimization of neural networks for deep learning and applications to CT image segmentation 

    Pezzano, Giuseppe (Date of defense: 2023-07-27)

    [eng] During the last few years, AI development in deep learning has been going so fast that even important researchers, politicians, and entrepreneurs are signing petitions to try to slow it down. The newest methods for ...

    Reinforcement Learning for Value Alignment 

    Rodríguez Soto, Manel (Date of defense: 2023-06-26)

    [eng] As autonomous agents become increasingly sophisticated and we allow them to perform more complex tasks, it is of utmost importance to guarantee that they will act in alignment with human values. This problem has ...

    Sobre la distribución de los valores de una función representada por una serie de Dirichlet lagunar 

    Sunyer i Balaguer, Ferran, 1912-1967 (Date of defense: 1962-10-23)

    En una serie de Notas y Memorias, el autor de ésta demostró que cuando la serie de Taylor, que representa una función entera u holomorfa en el círculo unidad, es suficiente lagunar, la función toma la totalidad de los ...

    Sobre la parte p-fundamental del grupo de Brauer 

    Vaquer i Timoner, Josep, 1928-2020 (Date of defense: 2020-01-01)

    Según un conocido teorema de Wedderburn, toda álgebra normal y simple es el producto directo (tensorial) de un álgebra total de matrices y un álgebra de división. A partir de aquí R. Brauer divide las álgebras normales y ...

    Towards Efficient and Realistic Animation of 3D Garments with Deep Learning 

    Bertiche Argila, Hugo (Date of defense: 2022-11-17)

    [eng] Machine learning has experienced a soar thanks to the proliferation of deep learning based methodologies. 3D vision is one of the many fields that benefited from this trend. Within this domain, I focused my research ...

    Towards Video Transformers for Automatic Human Analysis 

    Selva Castelló, Javier (Date of defense: 2023-12-19)

    [eng] With the aim of creating artificial systems capable of mirroring the nuanced understanding and interpretative powers inherent to human cognition, this thesis embarks on an exploration of the intersection between human ...

    Un concepto generalizado de conjugación : aplicación a las funciones quasiconvexas 

    Martínez Legaz, Juan Enrique (Date of defense: 1981-10-29)

    En este trabajo se definen y estudian los conceptos de H-convexidad y H-conjugación, siendo H una familia de funciones reales de variable real cerrada para el supremo puntual de tal manera que coinciden con los clásicos ...

    Uncertainty, interpretability and dataset limitations in Deep Learning 

    Pascual i Guinovart, Guillem (Date of defense: 2023-02-17)

    [eng] Deep Learning (DL) has gained traction in the last years thanks to the exponential increase in compute power. New techniques and methods are published at a daily basis, and records are being set across multiple ...

    Vector bundles and sheaves on toric varieties 

    Salat Moltó, Martí (Date of defense: 2022-11-15)

    [eng] Framed within the areas of algebraic geometry and commutative algebra, this thesis contributes to the study of sheaves and vector bundles on toric varieties. From different perspectives, we take advantage of the ...