Results 61 to 70 of about 109,420 (245)

Adaptive Importance Sampling for Deep Ritz

open access: yesCommunications on Applied Mathematics and Computation
We introduce an adaptive sampling method for the Deep Ritz method aimed at solving partial differential equations (PDEs). Two deep neural networks are used. One network is employed to approximate the solution of PDEs, while the other one is a deep generative model used to generate new collocation points to refine the training set. The adaptive sampling
Xiaoliang Wan, Tao Zhou, Yuancheng Zhou
openaire   +3 more sources

Predicting the Future Burden of Renal Replacement Therapy in Türkiye Using National Registry Data and Comparative Modeling Approaches

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül   +2 more
wiley   +1 more source

Bayesian autoregressive adaptive refined descriptive sampling algorithm in the Monte Carlo simulation

open access: yesStatistical Theory and Related Fields, 2023
This paper deals with the Monte Carlo Simulation in a Bayesian framework. It shows the importance of the use of Monte Carlo experiments through refined descriptive sampling within the autoregressive model $ X_{t}=\rho X_{t-1}+Y_{t} $ , where $ 0 \lt \rho
Djoweyda Ghouil, Megdouda Ourbih-Tari
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Improvement of low level bark beetle damage estimates with adaptive cluster sampling

open access: yesSilva Fennica, 2010
Detection of low level infestation in forest stands is of principle importance to determine effective control strategies before the attack spread to large areas.
Coggins, Sam   +2 more
doaj   +1 more source

Self-Adaptive Priority Correction for Prioritized Experience Replay

open access: yesApplied Sciences, 2020
Deep Reinforcement Learning (DRL) is a promising approach for general artificial intelligence. However, most DRL methods suffer from the problem of data inefficiency.
Hongjie Zhang   +3 more
doaj   +1 more source

Tree pyramidal adaptive importance sampling

open access: yes, 2019
20 pages + 13 pages of additional result plots and evaluation ...
Felip, Javier   +2 more
openaire   +2 more sources

Representativity for Robust and Adaptive Multiple Importance Sampling [PDF]

open access: yesIEEE Transactions on Visualization and Computer Graphics, 2011
We present a general method enhancing the robustness of estimators based on multiple importance sampling (MIS) in a numerical integration context. MIS minimizes variance of estimators for a given sampling configuration, but when this configuration is less adapted to the integrand, the resulting estimator suffers from extra variance.
Pajot, Anthony   +3 more
openaire   +3 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

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