Programa de Doctorat en Tecnologies de la Informació i les Comunicacions: Recent submissions
Now showing items 21-40 of 389
Multilingual adaptative text simplification
Reading is an essential skill that plays a crucial role in our daily lives. It allows us to access information, gain knowledge, expand our understanding of the world around us, and build the foundation for learning, ...
Towards a comprenhension of spatiotemporal brain dymamics in psychotic disorders a whole-brain computational perspective based on fMRI
Psychotic disorders are highly heterogeneous, complicating diagnosis and treatment. The mechanisms underlying these disorders are still unclear, and bridging the gap between neural properties and impairments remains a ...
Interpretable deep-learning models for sound event detection and classification
Deep-learning models have revolutionized state-of-the-art technologies in many research areas, but their black-box structure makes it difficult to understand their inner workings and the rationale behind their predictions. ...
Multilingual retrieval of crisis-relevant information from social media
Social media is a valuable platform for sharing real-time perspectives and insights, particularly during dynamic events. Extracting relevant information from social media during emergencies can be challenging, especially ...
Proximal junctional failure stratification in adult spine surgery using 3D patient-specific finite element models
Adult Spine Deformity (ASD) leads to abnormal spine curvature causing imbalance, pain, and fall risk. Spinal surgery is common but carries the risk of Mechanical Complications (MC), notably Proximal Junctional Failure ...
Information fusion and learning from diverse clinical cohorts and heterogeneus data
This PhD thesis explores how data science can be leveraged to learn from diverse cohorts and fuse information from heterogeneous data, aiming to advance understanding and improve prediction in healthcare settings. It covers ...
Information propagation in the cortex across the sleep-wake cycle: a computational study
During the deep phases of sleep we do not normally wake up by a thunder, but we nevertheless notice it when awake. The exact same sound gets to our ears and cortex through the thalamus and still, it triggers two very ...
Constraints and rewards in behavior and optimal decision making
The idea of optimal decision-making presupposes certain features about the agent and their environment. This thesis examines two common assumptions in disciplines that study natural and artificial behavior: perfect ...
Representation learning for hierarchical reinforcement learning
Hierarchical Reinforcement Learning (HRL) has the potential to simplify the solution of environments with long horizons and sparse rewards. The idea behind HRL is to decompose a complex decision-making problem into ...
Complexity changes in neuroimaging signals point to mechanisms of neuropsychiatric disease
The past decade has seen several attempts to employ the entropy of neuroimaging signals as a potential biomarker for cognitive decline or traumatic brain injury (C. Y. Liu et al. 2013; Adhikari et al. 2017; Li et al. 2018). ...
Re-thinking large scale hate speech identification: beyond common NLP conventions and supervised machine learning
The detection of hate speech in online spaces is traditionally conceptualized as a classification task that uses Machine Learning (ML)-driven Natural Language Processing (NLP) techniques. In accordance with this ...
Towards efficient audio-visual source separation and synthesis
Nuestro cerebro tiene la habilidad innata de aislar diferentes sonidos en ambientes ruidosos (Efecto de fiesta de coctel), así como de entender la relación entre aquello que vemos y oímos. Esta tesis tiene como objetivo ...
Improvements to incentives in incentive-driven blockchain technologies
In this thesis, we present a set of protocols in areas at the core of current blockchain technology literature; consensus, decentralized finance and distributed computing. These areas are bound by a critical dependency ...
Toward empathic systems: implicit understanding and modulation of human cognitive and affective states
Emotions are a fundamental part of human life. They play a critical role in how we think, behave, and implicitly understand each other. However, although computing devices are increasingly consequential in our world, they ...
Zero-knowledge proofs for self-sovereign identities in decentralized services
Telecommunication systems such as mobile communications are evolving over time, and thanks to that, many digital services have arisen in the last decade. Usually, these services ask their users to provide sensitive information ...
Assessing the digital well-being of educational technologies supported by learning analytics
The accelerating adoption of digital technologies creates a direct relationship between the status of individual and societal well-being on one hand, and the state of the digital technologies that underpin human life ...
Automatic characterization and generation of music loops and instrument samples for electronic music production
Repurposing audio material to create new music - also known as sampling - was a foundation of electronic music and is a fundamental component of this practice. Currently, large-scale databases of audio offer vast collections ...
Assessing the impact of music recommendation diversity on listeners
This thesis focuses on assessing the impact that music recommendation diversity may have on listeners. In the music domain, diversity is one of the values that recommender systems should preserve, because the world music ...
Risk assessment in complex data settings: algorithmic fairness and causal inference
We try to address some challenges in structured risk assessment tools in two application areas of recidivism risk in criminal justice and dropout risk in higher education domain. Using Machine Learning (ML) methods, we ...
Brain states in health and disease: insights from neuroimaging and theoretical neuroscience
Spontaneous brain activity persists and transitions between brain states, such as from wakefulness to sleep, from development to ageing, or it may transition to pathological states such as coma. Nevertheless, a consensual ...
