Results 91 to 100 of about 3,425 (184)
A Preconditioned Majorization‐Minimization Method for ℓ2$$ {\ell}^2 $$‐ℓq$$ {\ell}^q $$ Minimization
Numerical Linear Algebra with Applications, Volume 33, Issue 3, June 2026.ABSTRACT The need to minimize a linear combination of an expression that involves an ℓq$$ {\ell}^q $$‐norm of a linear transformation of the computed solution and the ℓ2$$ {\ell}^2 $$‐norm of the residual error arises in image restoration as well as in statistics.
A. Buccini +3 more
wiley +1 more source
An Augmented Lagrangian Preconditioner for Navier–Stokes Equations With Runge–Kutta in Time
Numerical Linear Algebra with Applications, Volume 33, Issue 3, June 2026.ABSTRACT We consider an implicit Runge–Kutta method for the numerical time integration of the nonstationary incompressible Navier–Stokes equations. This yields a sequence of nonlinear problems to be solved for the stages of the Runge–Kutta method. The resulting nonlinear system of differential equations is discretized using a finite element method.
Santolo Leveque +2 more
wiley +1 more source
Gram Decay and Intrinsic Dimensions of Krylov Subspaces
Numerical Linear Algebra with Applications, Volume 33, Issue 3, June 2026.ABSTRACT Krylov subspace methods solve large sparse linear systems Ax=b$$ Ax=b $$ by building a sequence of polynomial approximations to A−1b$$ {A}^{-1}b $$ from successive matrix‐vector products. In finite precision, the number of numerically independent directions that can be extracted from this sequence is bounded by the intrinsic information ...
Stephen J. Thomas
wiley +1 more source
Interval methods for non-linear systems [PDF]
, 2018 In numerical mathematics, there is a need for methods which provide a user with the solution to his problem without requiring him to understand the mathematics underlying the method of solution.
Shearer, J. M.
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CPT: Pharmacometrics &Systems Pharmacology, Volume 15, Issue 6, June 2026.ABSTRACT Traditional pharmacokinetic‐pharmacodynamic models assume cellular homogeneity, yet clinical observations reveal substantial response variability even among patients with similar plasma exposure. We hypothesized that cellular heterogeneity in drug transporter expression, coupled with nonlinear dose–response relationships, can amplify ...
Nhung Hong‐Thi Duong +4 more
wiley +1 more source
EQUATIONS AND INTERVAL COMPUTATIONS FOR SOME FRACTALS
, 2018 International audienceVery few characteristic functions, or equations, are reported so far for fractals. Such functions, called Rvachev functions in function-based modeling, are zero on the boundary, negative for inside points and positive for outside ...
Michelucci, Dominique +5 more
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Computationally Efficient Approach to Operational Prior Specification in Phase I Clinical Trials
Statistics in Medicine, Volume 45, Issue 13-14, June 2026.ABSTRACT The increased interest in the combination of drug agents and/or schedules requires more flexible model‐based designs for Phase I clinical trials. The models often involve more design parameters, which have to be specified before starting the trial.
Weishi Chen, Pavel Mozgunov
wiley +1 more source
Covariance Estimation for Wide Data
WIREs Computational Statistics, Volume 18, Issue 2, June 2026.Covariance matrix estimation is fundamental to multivariate analysis, with applications spanning finance, genomics, climate science, and signal processing. This review synthesizes recent advances in high‐dimensional covariance estimation‐thresholding, linear and nonlinear shrinkage, graphical models, and random matrix theory‐under a unifying framework ...
Eran Raviv
wiley +1 more source
An HHT–ANN Framework for Short‐Term Kp Forecasting
Space Weather, Volume 24, Issue 6, June 2026.Abstract The geomagnetic activity index Kp is an important indicator of solar wind–magnetosphere coupling, and accurate 3‐hr‐ahead forecasting is important for space‐weather monitoring and warning. Because upstream solar wind and interplanetary magnetic field (IMF) signals are strongly nonlinear and nonstationary, methods based only on conventional ...
P. Yang +5 more
wiley +1 more source
An adaptive Kriging based optimisation altorithm for interval and fuzzy FRF analysis
, 2008 The finite element method is a useful tool to predict the behaviour of a structure under static and dynamic loads. Reliable finite element analyses can reduce the need for prototype testing and reduce the design validation cost and time.
Vandepitte, Dirk +3 more
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