Results 31 to 40 of about 345,147 (195)

Addressing Discontinuous Root-Finding for Subsequent Differentiability in Machine Learning, Inverse Problems, and Control

open access: yesJournal of Computational Physics, 2023
There are many physical processes that have inherent discontinuities in their mathematical formulations. This paper is motivated by the specific case of collisions between two rigid or deformable bodies and the intrinsic nature of that discontinuity. The impulse response to a collision is discontinuous with the lack of any response when no collision ...
Johnson, Daniel, Fedkiw, Ronald
openaire   +3 more sources

A back propagation neural network-based approach for inverting layered seabed acoustic parameters in shallow waters

open access: yesFrontiers in Marine Science
IntroductionExisting methods primarily focus on earth acoustic parameters inversion under specific layered structures. However, they face challenges with experimental data from unknown seabed stratification, hindering accurate parameter inversion ...
Jiahui Wang   +5 more
doaj   +1 more source

Topological multiband photonic superlattices

open access: yes, 2018
A one-dimensional discrete lattice of dimers is known to possess topologically protected edge states when interdimer coupling is stronger than intradimer coupling.
Feng, Liang, Midya, Bikashkali
core   +1 more source

Television program avoidance and personality [PDF]

open access: yes, 2009
Recent communication research indicates that approach and avoidance constitute two separate yet co-existing processes during media exposure. While many studies address TV approach behavior, little is known about TV avoidance behavior.
Andreas Fahr, Mahwah, Tabea Böcking
core   +1 more source

Addressing Constraint Robustness to Torque Errors in Task-Space Inverse Dynamics

open access: yesRobotics: Science and Systems XI, 2015
Task-Space Inverse Dynamics (TSID) is a well-known optimization-based technique for the control of highly-redundant mechanical systems, such as humanoid robots. One of its main flaws is that it does not take into account any of the uncertainties affecting these systems: poor torque tracking, sensor noises, delays and model uncertainties.
del Prete, Andrea, Mansard, Nicolas
openaire   +3 more sources

A new technique inversion Time-Domain electromagnetic data

open access: yesHeliyon, 2023
Time-Domain Electromagnetic (TDEM) data modeling, especially for central-loop configurations, is often achieved through 1D inversion models. This study aims to enhance the accuracy and efficiency of TDEM data inversion by employing the Born Approximation
Widodo
doaj   +1 more source

Inversion symmetry breaking induced triply degenerate points in orderly arranged PtSeTe family materials

open access: yes, 2018
$k$ paths exactly with $C_{3v}$ symmetry allow to find triply degenerate points (TDPs) in band structures. The paths that host the type-II Dirac points in PtSe$_2$ family materials also have the $C_{3v}$ spatial symmetry.
Cheung, C. H.   +5 more
core   +1 more source

Tensor and Matrix Inversions with Applications [PDF]

open access: yes, 2011
Higher order tensor inversion is possible for even order. We have shown that a tensor group endowed with the Einstein (contracted) product is isomorphic to the general linear group of degree $n$.
Brazell, Michael   +3 more
core  

Ensemble Kalman filter for neural network based one-shot inversion

open access: yes, 2020
We study the use of novel techniques arising in machine learning for inverse problems. Our approach replaces the complex forward model by a neural network, which is trained simultaneously in a one-shot sense when estimating the unknown parameters from ...
Guth, Philipp A.   +2 more
core   +1 more source

One‐Fit‐All Transformer for Multimodal Geophysical Inversion: Method and Application

open access: yesJournal of Geophysical Research: Machine Learning and Computation
The increasing variety of geophysical data sets enhances inversion constraints but also poses significant challenges for conventional methods in terms of precision and efficiency due to factors like non‐linearity and limited observation coverage.
Yiran Jiang   +5 more
doaj   +1 more source

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