Results 121 to 130 of about 1,368 (203)
Information Flow in Geophysical Systems
Journal of Advances in Modeling Earth Systems, Volume 18, Issue 6, June 2026.Abstract We present a new framework for analyzing the evolution of information in geophysical systems. Understanding how information, and its counterpart, uncertainty, propagates is central to predictability studies and has significant implications for applications such as forecast uncertainty quantification and risk management. It also offers valuable
P. J. van Leeuwen
wiley +1 more source
Validation of machine learning based scenario generators
Journal of Risk and Insurance, Volume 93, Issue 2, Page 508-533, June 2026.Abstract Machine learning (ML) methods are becoming increasingly important for designing economic scenario generators for internal models. Validating data‐driven models requires different methods than validating classical, theory‐based models. We discuss two novel aspects of such validation: first, checking the multivariate distribution of risk factors,
Gero Junike, Solveig Flaig, Ralf Werner
wiley +1 more source
Nonparametric Cure Models Through Extreme‐Value Tail Estimation
Scandinavian Journal of Statistics, Volume 53, Issue 2, Page 984-1000, June 2026.ABSTRACT In survival analysis, the estimation of the proportion of subjects who will never experience the event of interest, termed the cure rate, has received considerable attention recently. Its estimation can be a particularly difficult task when follow‐up is not sufficient, that is, when the censoring mechanism has a smaller support than the ...
Jan Beirlant +2 more
wiley +1 more source
A characterization of metaplectic time–frequency representations
Bulletin of the London Mathematical Society, Volume 58, Issue 6, June 2026.Abstract We characterize all time–frequency representations that satisfy a general covariance property: any weak*‐continuous bilinear mapping that intertwines time–frequency shifts on the configuration space with time–frequency shifts on phase space is a multiple of a metaplectic time–frequency representation. This characterization offers an intrinsic,
Karlheinz Gröchenig, Irina Shafkulovska
wiley +1 more source
Stable factorization of the Calderón problem via the Born approximation
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract In this article, we prove the existence of the Born approximation in the context of the radial Calderón problem for Schrödinger operators. The Born approximation naturally appears as the linear component of a factorization of the Calderón problem; we show that the nonlinear part, obtaining the potential from the Born approximation, enjoys ...
Thierry Daudé +3 more
wiley +1 more source
Dynamical systems are one of the interesting concepts where iteration algorithms and chaos can be considered together. In iteration algorithms, one of the basic concepts of fixed point theory, it is well known that the behavior of the iteration mechanism
Sekman, Derya, Karakaya, Vatan
core +1 more source
, 2019 © Published under licence by IOP Publishing Ltd. The geometrically nonlinear problem of bending of sandwich plates with a transversally soft core in a one-dimensional statement is considered.
Badriev I. +3 more
core
FRÉCHET DERIVATIVES FOR SOME BILINEAR INVERSE PROBLEMS
, 2008 . In many inverse problems a functional of u is given by measurements where u solves a partial differential equation of the type L(p)u + Su = q. Here, q is a known source term and L(p), S are operators with p as unknown parameter of the inverse problem ...
Thomas Dierkes +3 more
core
Ordinary Differential Equation Modeling and a Novel Zubair-Fréchet Distribution for Cholera in Ghana With Control Strategies. [PDF]
Health Sci RepNyamekye KA +5 more
europepmc +1 more source
Long-time behaviour and bifurcation analysis of a two-species aggregation-diffusion system on the torus. [PDF]
Calc Var Partial Differ EquCarrillo JA, Salmaniw Y.
europepmc +1 more source