Zobrazeno 1 - 10
of 15 256
pro vyhledávání: '"HALLBERG, A."'
This paper addresses a significant gap in explainable AI: the necessity of interpreting epistemic uncertainty in model explanations. Although current methods mainly focus on explaining predictions, with some including uncertainty, they fail to provid
Externí odkaz:
http://arxiv.org/abs/2410.05479
Autor:
Szabadváry, Johan Hallberg
Publikováno v:
The conference version was published in Proceedings of Machine Learning Research, 230:250-263, 2024 (COPA 2024)
The aim of this paper is to propose an adaptation of the well known adaptive conformal inference (ACI) algorithm to achieve finite-sample coverage guarantees in multi-step ahead time-series forecasting in the online setting. ACI dynamically adjusts s
Externí odkaz:
http://arxiv.org/abs/2409.14792
Autor:
Szabadváry, Johan Hallberg
Conformal prediction (CP) is a robust framework for distribution-free uncertainty quantification, but it requires exchangeable data to ensure valid prediction sets at a user-specified significance level. When this assumption is violated, as in time-s
Externí odkaz:
http://arxiv.org/abs/2409.15548
The XXZ spin-half chain has Heisenberg exchange interactions $J_z$ ($J_\perp$) in the $z$ ($x,y$) direction. The model has a transition from the spin-fluid phase for $-J_\perp < J_z < J_\perp$ to the N\'{e}el phase for $J_z > J_\perp >0$. When bond a
Externí odkaz:
http://arxiv.org/abs/2406.01760
Publikováno v:
Phys. Rev. B 109, 085122 (2024)
We study the non-degenerate one dimensional two-orbital Hubbard model with interorbital Coulomb interaction. By means of the density-matrix renormalization group technique, we calculate the local single-particle density of states and the optical cond
Externí odkaz:
http://arxiv.org/abs/2312.08284
We study fermions on a finite chain, interacting repulsively when residing on the same and on nearest-neighbor sites, and subjected to a Wannier-Stark linearly-varying potential. Using the density matrix renormalization-group numerical technique to s
Externí odkaz:
http://arxiv.org/abs/2310.00291
We calculate the charge gap $\Delta E_C$ and the spin gap $\Delta E_S$ of the ionic Hubbard chain including electron-hole symmetric density-dependent hopping. The vanishing of $\Delta E_C$ ($\Delta E_S$) signals a quantum critical point (QCP) in the
Externí odkaz:
http://arxiv.org/abs/2309.10126
Autor:
Ahmet Yalcinkaya, Marco Cavalli, Maribel Aranda-Guillén, Axel Cederholm, Almira Güner, Isabel Rietrae, Hedvig Mildner, Anish Behere, Oskar Eriksson, Laura Gonzalez, Constantin Habimana Mugabo, Anette Johnsson, Tadepally Lakshmikanth, Petter Brodin, Mia Wadelius, Pär Hallberg, Nils Landegren
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract While Coronavirus disease 2019 (COVID-19) vaccines have proven to be both effective and generally safe, rare but severe adverse events following immunization (AEFIs) are described. Autoantibodies to platelet factor-4 are associated with cata
Externí odkaz:
https://doaj.org/article/b3f0daac9c2541ba8d790503c67ed99b
Autor:
Annie Svensson, Anna Svensson-Raskh, Linda Holmström, Carl Hallberg, Lucian Bezuidenhout, David Moulaee Conradsson, Marcus Ståhlberg, Judith Bruchfeld, Artur Fedorowski, Malin Nygren-Bonnier
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Postural orthostatic tachycardia syndrome (POTS) occurs in approximately 30% of people with highly symptomatic post-COVID-19 condition (PCC). It involves several symptoms that limit physical and psychological functions and cause reduced qual
Externí odkaz:
https://doaj.org/article/6cf1a959def74eb7a8c3d37379370872
Publikováno v:
Phys. Rev. B 107, 085128 (2023)
Starting from \textit{ab-initio} calculations, we derive a five-band Hubbard model to describe the CuO$_2$ chains of LiCu$_2$O$_2$. This model is further simplified to a low-energy effective Heisenberg model with nearest-neighbor (NN) $J_1$, and next
Externí odkaz:
http://arxiv.org/abs/2212.03318