Matemàtiques i Informàtica

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Els materials de recerca de la Universitat de Barcelona (UB) a RECERCAT s'obtenen de les col·leccions de Recerca del Dipòsit Digital de la UB.
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Política d’accés obert a la UB


Publicacions en accés obert derivades de l'activitat investigadora del professorat de la Universitat de Barcelona.

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Llista ítems afegits recenment

A review of evaluation approaches for explainable AI with applications in cardiology 

Salih, Ahmed M.; Boscolo Galazzo, Ilaria; Rauseo, Elisa; Lee, Aaron Mark; Lekadir, Karim, 1977-; Radeva, Petia; Petersen, Steffen E.; Menegaz, Gloria; Gkontra, Polyxeni (Publication date: 2026-03-03)

Explainable artificial intelligence (XAI) elucidates the decision-making process of complex AI models and is important in building trust in model predictions. XAI explanations themselves require evaluation as to accuracy ...

Homemade algebraic geometry: celebrating Enrique Arrondo’s 60th birthday 

Marchesi, Simone; Tocino, Alicia (Publication date: 2026-03-03)

In this survey we recognize Enrique Arrondo’s contributions over the whole of his career, recalling his professional history and collecting the results of his mathematical production.

An assessment of the European Patient Summary for clinical research: a case study in cardiology 

Laleci Erturkmen, Gokce Banu; Sinaci, Ali Anil; Tuncay Namli; Boonstra, Machteld J.; Lekadir, Karim, 1977-; Gkontra, Polyxeni; Chronaki, Catherine; Facile, Rhonda; Baker, Rebecca; Kush, Rebecca (Publication date: 2026-03-03)

Introduction: The European Health Data Space (EHDS) initiative was launched to create a unified framework for health data exchange across Europe. Central to this initiative is the European Electronic Health Record Exchange ...

New imaging signatures of cardiac alterations in ischaemic heart disease and cerebrovascular disease using CMR radiomics 

Rauseo, Elisa; Izquierdo Morcillo, Cristian; Raisi-Estabragh, Zahra; Gkontra, Polyxeni; Aung, Nay; Lekadir, Karim, 1977-; Petersen, Steffen E. (Publication date: 2026-02-27)

Background: Ischaemic heart disease (IHD) and cerebrovascular disease are two closely inter-related clinical entities. Cardiovascular magnetic resonance (CMR) radiomics may capture subtle cardiac changes associated with ...

Cardiac magnetic resonance radiomics reveal differential impact of sex, age, and vascular risk factors on cardiac structure and myocardial tissue 

Raisi-Estabragh, Zahra; Jaggi, Akshay; Gkontra, Polyxeni; McCracken, Celeste; Aung, Nay; Munroe, Patricia B.; Neubauer, Stefan; Harvey, Nicholas C.; Lekadir, Karim, 1977-; Petersen, Steffen E. (Publication date: 2026-02-27)

Background: Cardiovascular magnetic resonance (CMR) radiomics analysis provides multiple quantifiers of ventricular shape and myocardial texture, which may be used for detailed cardiovascular phenotyping. Objectives: We ...

Girth in GF(q)-representable matroids. 

Davies, James; Hatzel, Melke; Knauer, Kolja; McCarty, Rose; Ueckerdt, Torsten (Publication date: 2026-02-23)

We prove a conjecture of Geelen, Gerards, and Whittle that for any finite field GF $(q)$ and any integer $t$, every cosimple GF ( $q$ )-representable matroid with sufficiently large girth contains either $M\left(K_t\right)$ ...

Boundedness for proper conflict-free and odd colorings. 

Jiménez, Andrea; Knauer, Kolja; Lintzmayer, Carla Negri; Matamala, Martín; Peña, Juan Pablo; Quiroz, Daniel A.; Sambinelli, Maycon; Wakabayashi, Yoshiko; Yu, Weiqiang; Zamora, José (Publication date: 2026-02-23)

The proper conflict-free chromatic number, $\chi_{\mathrm{pcf}}(G)$, of a graph $G$ is the least positive integer $k$ such that $G$ has a proper $k$-coloring in which for each non-isolated vertex there is a color appearing ...

Higher rank prioritary bundles on ruled surfaces and their global sections 

Costa Farràs, Laura; Macías Tarrío, Irene (Publication date: 2026-02-23)

Let $X$ be a ruled surface over a nonsingular curve $C$ of genus $g \geq 0$. The main goal of this paper is to construct simple prioritary vector bundles of any rank $r$ on $X$ and to give effective bounds for the dimension ...

Vascular surgery study of the CGuard MicroNet-covered stent in patients with indication to carotid revascularization: POLGUARD 

Bedkowski, Lukasz; Szkolka, Lukasz; Lyko-Morawska, Dorota; Balocco, Simone; Buczek, Michal; Medon, Ewa; Wolkowski, Maciej; Dryjski, Maciej; Kuczmik, Waclaw (Publication date: 2026-02-20)

BACKGROUND: In a recent randomized study, MicroNet-covered stent (CGuard) significantly reduced procedural and post-procedural cerebral embolism in relation to a single-layer CREST study carotid stent, but real-life clinical ...

DeBasher: a flow-based programming bash extension for the implementation of complex and interactive workflows with stateful processes 

Ortiz Martínez, Daniel (Publication date: 2026-02-19)

Background: Bioinformatics data analysis faces significant challenges. As data analysis often takes the form of pipelines or workflows, workflow managers (WfMs) have become essential. Data flow programming constitutes the ...

Enhancing point cloud semantic segmentation via scalable domain adaptation with LoRA-enabled PointNet++ 

Carós, Mariona; Just, Ariadna; Seguí Mesquida, Santi; Vitrià i Marca, Jordi (Publication date: 2026-02-19)

Semantic segmentation of airborne LiDAR point clouds enables a broad range of urban and environmental applications. However, domain shifts between training and operational data, as well asthefrequentemergenceofnewsemanti ...

Strict rearrangement inequalities: nonexpansivity and periodic Gagliardo semi-norms 

Csató, Gyula; Mas Blesa, Albert (Publication date: 2026-02-19)

This paper deals with the behavior of the periodic Gagliardo seminorm under two types of rearrangements, namely under a periodic, and respectively a cylindrical, symmetric decreasing rearrangement. Our two main results are ...

Inter-and Intraobserver Variability in Bowel Preparation Scoring for Colon Capsule Endoscopy: Impact of AI-Assisted Assessment Feasibility Study 

Io Lei, Ian; Gaya, Daniel R.; Robertson, Alexander; Schelde-Olesen, Benedicte; Mapiye, Alice; Bhandare, Anirudh; Lui, Bei Bei; Shekhar, Chander; Valentiner, Ursula; Gilabert Roca, Pere; Laiz Treceño, Pablo; Seguí Mesquida, Santi; Parsons, Nicholas; Huhulea, Cristiana; Wenzek, Hagen; White, Elizabeth; Koulaouzidis, Anastasios; Arasaradnam, Ramesh P. (Publication date: 2026-02-16)

This study assessed the reliability of AI-assisted bowel cleansing scoring in colon capsule endoscopy using the CC-CLEAR scale. While interobserver agreement was excellent with manual scoring among experienced readers, ...

Periodic solutions to integro-differential equations: variational formulation, symmetry, and regularity 

Cabré Vilagut, Xavier; Csató, Gyula; Mas Blesa, Albert (Publication date: 2026-02-12)

We consider nonconstant periodic constrained minimizers of semilinear elliptic equations for integro-differential operators in $\mathbb{R}$. We prove that, after an appropriate translation, each of them is necessarily an ...

Ulrich bundles 

Costa Farràs, Laura; Miró-Roig, Rosa M. (Rosa Maria); Pons Llopis, Joan (Publication date: 2026-02-06)

On the Arnold Diffusion Mechanism in Medium Earth Orbit 

Alessi, Elisa Maria; Baldomá Barraca, Inmaculada; Giralt Miron, Mar; Guàrdia Munárriz, Marcel (Publication date: 2026-01-29)

Space debris mitigation guidelines represent the most effective method to preserve the circumterrestrial environment. Among them, end-of-life disposal solutions play a key role. In this regard, effective strategies should ...

On the Paraconsistent Companions of Involutive Fuzzy Logics that Preserve Non-falsity 

Esteva Massaguer, Francesc; Gispert Brasó, Joan; Godo i Lacasa, Lluís (Publication date: 2026-01-26)

<p>It is known that most systems of fuzzy logic trivialise in the</p><p>presence of contradictory information of the type {φ, ¬φ}, since with the</p><p>standard truth-preserving [0, 1]-valued semantics, there is no ...

Instanton bundles vs Ulrich bundles on projective spaces 

Costa Farràs, Laura; Miró-Roig, Rosa M. (Rosa Maria) (Publication date: 2026-01-26)

We relate the existence of rank $r$ Ulrich bundles on a Veronese 3-fold $\left(\mathbb{P}^3, \mathcal{O}_{\mathbb{P}^3}(d)\right)$ with the existence of rank $r$ instanton bundles on $\mathbb{P}^3$. This relation will allow ...

Clifford's theorem for coherent systems on surfaces with Kodaira dimension $\kappa \leq 0$ 

Costa Farràs, Laura; Macías Tarrío, Irene; Roa-Leguizamón, Leonardo (Publication date: 2026-01-19)

Let $X$ be a smooth irreducible projective surface with Kodaira dimension $\kappa \leq 0$. The aim of this paper is to establish a version of Clifford's theorem for coherent systems on $X$.

Brill-Noether theory of stable vector bundles on ruled surfaces 

Costa Farràs, Laura; Macías Tarrío, Irene (Publication date: 2026-01-15)

Let $X$ be a ruled surface over a nonsingular curve $C$ of genus $g \geq 0$. Let $M_H:=M_{X, H}\left(2 ; c_1, c_2\right)$ be the moduli space of $H$-stable rank 2 vector bundles $E$ on $X$ with fixed Chern classes $c_i:=c_i(E)$ ...

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