Zobrazeno 1 - 10
of 952
pro vyhledávání: '"Kleppe, P."'
Adapting the step size locally in the no-U-turn sampler (NUTS) is challenging because the step-size and path-length tuning parameters are interdependent. The determination of an optimal path length requires a predefined step size, while the ideal ste
Externí odkaz:
http://arxiv.org/abs/2408.08259
Autor:
Tran, Jimmy Huy, Kleppe, Tore Selland
Three approaches for adaptively tuning diagonal scale matrices for HMC are discussed and compared. The common practice of scaling according to estimated marginal standard deviations is taken as a benchmark. Scaling according to the mean log-target gr
Externí odkaz:
http://arxiv.org/abs/2403.07495
We propose a generic approach for numerically efficient simulation from analytically intractable distributions with constrained support. Our approach relies upon Generalized Randomized Hamiltonian Monte Carlo (GRHMC) processes and combines these with
Externí odkaz:
http://arxiv.org/abs/2311.14492
Autor:
Kleppe, Jan O., Miró-Roig, Rosa M.
Let $\varphi: F\longrightarrow G$ be a graded morphism between free $R$-modules of rank $t$ and $t+c-1$, respectively, and let $I_j(\varphi)$ be the ideal generated by the $j \times j$ minors of a matrix representing $\varphi$. In this short note: (1
Externí odkaz:
http://arxiv.org/abs/2311.08008
Randomized Runge-Kutta-Nystr\'om Methods for Unadjusted Hamiltonian and Kinetic Langevin Monte Carlo
Autor:
Bou-Rabee, Nawaf, Kleppe, Tore Selland
We introduce $5/2$- and $7/2$-order $L^2$-accurate randomized Runge-Kutta-Nystr\"{o}m methods, tailored for approximating Hamiltonian flows within non-reversible Markov chain Monte Carlo samplers, such as unadjusted Hamiltonian Monte Carlo and unadju
Externí odkaz:
http://arxiv.org/abs/2310.07399
Autor:
Cross, Sam, Buhot, Jonathan, Brooks, Annabelle, Thomas, William, Kleppe, Annette, Lord, Oliver, Friedemann, Sven
High-temperature superconductivity has been observed in binary hydrides such as LaH10 at pressures above 150 GPa. Hydrogen cage structures have been identified as a common motif beneficial for high critical temperatures Tc. Efforts are now focused on
Externí odkaz:
http://arxiv.org/abs/2308.02977
Autor:
Joakim Dillner, Laila Sara Arroyo Mühr, Sara Nordqvist Kleppe, Jiangrong Wang, Helena Andersson, Miriam Elfström, Roxana Merino, Karin Sundström
Publikováno v:
Scientific Data, Vol 11, Iss 1, Pp 1-7 (2024)
Abstract The Cervical Screening Cohort enrols women screened for human papillomavirus (HPV) and cervical abnormalities within the capital region of Sweden from the organised screening program and the non-organised testing of cervical samples. The coh
Externí odkaz:
https://doaj.org/article/7402e15cd634498b8c73a20fa3eab49f
Publikováno v:
Acta Odontologica Scandinavica, Vol 83, Iss 1 (2024)
Objective: To elucidate cone-beam computed tomography (CBCT) referral profiles in Western Norway. Materials and methods: In all, 3,031 referrals to oral- and maxillofacial radiologist were reviewed. Patient data were retrieved retrospectively from
Externí odkaz:
https://doaj.org/article/6f73a0f9ba2945c8b08675532ed75333
Autor:
Kleppe, Tore Selland
A metric tensor for Riemann manifold Monte Carlo particularly suited for non-linear Bayesian hierarchical models is proposed. The metric tensor is built from symmetric positive semidefinite log-density gradient covariance (LGC) matrices, which are al
Externí odkaz:
http://arxiv.org/abs/2211.01746
Autor:
Kleiman, Steven L., Kleppe, Jan O.
Macaulay Duality, between quotients of a polynomial ring over a field, annihilated by powers of the variables, and finitely generated submodules of the ring's graded dual, is generalized over any Noetherian ring, and used to provide isomorphisms betw
Externí odkaz:
http://arxiv.org/abs/2210.10934