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Property (NL) for group actions on hyperbolic spaces
(2022)arXivWe introduce Property (NL), which indicates that a group does not admit any (isometric) action on a hyperbolic space with loxodromic elements. In other words, such a group $G$ can only admit elliptic or horocyclic hyperbolic actions, and consequently its poset of hyperbolic structures $\mathcal{H}(G)$ is trivial. It turns out that many groups satisfy this property; and we initiate the formal study of this phenomenon. Of particular importance ...Working Paper -
Beyond islands: A free probabilistic approach
(2022)arXivWe give a free probabilistic proposal to compute the fine-grained radiation entropy for an arbitrary bulk radiation state, in the context of the Penington-Shenker-Stanford-Yang (PSSY) model where the gravitational path integral can be implemented with full control. We observe that the replica trick gravitational path integral is combinatorially matching the free multiplicative convolution between the spectra of the gravitational sector ...Working Paper -
Understanding Stereotypes in Language Models: Towards Robust Measurement and Zero-Shot Debiasing
(2022)arXivGenerated texts from large pretrained language models have been shown to exhibit a variety of harmful, human-like biases about various demographics. These findings prompted large efforts aiming to understand and measure such effects, with the goal of providing benchmarks that can guide the development of techniques mitigating these stereotypical associations. However, as recent research has pointed out, the current benchmarks lack a robust ...Working Paper -
Introduction to Machine Learning for Physicians: A Survival Guide for Data Deluge
(2022)Many modern research fields increasingly rely on collecting and analysing massive, often unstructured, and unwieldy datasets. Consequently, there is growing interest in machine learning and artificial intelligence applications that can harness this `data deluge'. This broad nontechnical overview provides a gentle introduction to machine learning with a specific focus on medical and biological applications. We explain the common types of ...Working Paper -
Machine Learning in Paediatrics and the Childs's Right to An Open Future
(2022)SSRNMachine Learning (ML)-driven diagnostic systems for mental and behavioural paediatric conditions can have profound implications for child development, children’s image of themselves and their prospects for social integration.Working Paper -
Multi-location trials and population-based genotyping reveal high diversity and adaptation to breeding environments in a large collection of red clover
(2022)bioRxivRed clover (Trifolium pratense L.) is an outcrossing forage legume that has adapted to a wide range of climatic and growing conditions across Europe. Red clover is valued for its high yield potential and forage quality. The high amount of genetic diversity present in red clover provides an invaluable, but often poorly characterized resource to improve key traits such as yield, quality, and resistance to biotic and abiotic stresses. In ...Working Paper -
Concentration bounds for quantum states and limitations on the QAOA from polynomial approximations
(2022)arXivWe prove concentration bounds for the following classes of quantum states: (i) output states of shallow quantum circuits, answering an open question from [DPMRF22]; (ii) injective matrix product states; (iii) output states of dense Hamiltonian evolution, i.e. states of the form eιH(p)⋯eιH(1)|ψ0⟩ for any n-qubit product state |ψ0⟩, where each H(i) can be any local commuting Hamiltonian satisfying a norm constraint, including dense Hamiltonians ...Working Paper -
The protooncogene Ski regulates the neuron-glia switch during development of the mammalian cerebral cortex
(2022)bioRxivThe brain is the most complex organ in mammals and understanding the origin of this complexity is a major challenge for developmental biologists. Crucial to the size and morphology of the cortex is the timing and transition of neural stem cell (NSC) fate. An interesting candidate for modulating and fine tuning these processes is the transcriptional regulator Ski, a protooncogene expressed in cortical cells. Ski is involved in diverse ...Working Paper -
High quality organic resources are most efficient in stabilizing soil organic carbon: Evidence from four long-term experiments in Kenya
(2022)EGUsphereIn sub-Saharan Africa, long-term maize cropping with low external inputs has been associated with the loss of soil fertility. While adding high-quality organic resources combined with mineral fertilizer has been proposed to counteract this fertility loss, the long-term effectiveness and interactions with site properties still require more understanding. This study used repeated measurements over time to assess the effect of different ...Working Paper -
Bridging POMDPs and Bayesian decision making for robust maintenance planning under model uncertainty: An application to railway systems
(2022)arXivStructural Health Monitoring (SHM) describes a process for inferring quantifiable metrics of structural condition, which can serve as input to support decisions on the operation and maintenance of infrastructure assets. Given the long lifespan of critical structures, this problem can be cast as a sequential decision making problem over prescribed horizons. Partially Observable Markov Decision Processes (POMDPs) offer a formal framework ...Working Paper