Results 91 to 100 of about 11,601,754 (180)
Large Covariance Matrix Estimation by Penalized Log‐Det Heuristics
Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 5, October 2026.ABSTRACT We study covariance estimation in high‐dimensional approximate factor models with a sparse residual covariance. The estimator combines a log‐det loss with nuclear‐norm and off‐diagonal ℓ1$$ {\mathrm{\ell}}_1 $$ penalties on a sample‐normalized covariance scale.
Enrico Bernardi, Matteo Farnè
wiley +1 more source
TAXON, Volume 75, Issue 5, October 2026.Abstract Scilla s.l. (Asparagaceae: Scilloideae) represents a notable Mediterranean geophyte radiation, yet genus delimitation in subtribe Hyacinthinae has long suffered from inconsistent and conflicting generic concepts. A limited set of informative morphological characters and recurrent shifts in circumscription have repeatedly hindered progress ...
Tim Böhnert +6 more
wiley +1 more source
An Ensemble Kalman Smoother for Online Paleoclimate Data Assimilation
Journal of Advances in Modeling Earth Systems, Volume 18, Issue 10, October 2026.Abstract An integrated hybrid ensemble Kalman smoother (IHEnKS) is proposed to optimally utilize proxy data from the past to the future for paleoclimate data assimilation (PDA). As an extension of the integrated hybrid ensemble Kalman filter, IHEnKS assimilates future proxies through cross‐time error covariances, which are estimated from an online PDA ...
Haohao Sun +4 more
wiley +1 more source
Physical disability in the workplace: A career life cycle review
Applied Psychology, Volume 75, Issue 5, October 2026.Abstract This review examines how individuals with physical disabilities experience the career life cycle, with a central focus on how variability in physical disability visibility shapes the accommodations provided to these individuals and their broader career experiences.
Sophia R. Thomas +2 more
wiley +1 more source
Political Psychology, Volume 47, Issue 5, October 2026.Abstract Systematic differences of electoral participation between various social groups indicate crucial constraints of comprehensive democratic inclusion. Yet, there is a dearth of research on electoral participation among individuals with intellectual disability (ID), whose participation rates are considerably lower than among non‐ID citizens.
Björn Boman +2 more
wiley +1 more source
Lipschitz‐free spaces over uniformly discrete metric spaces are 3‐Schur
Bulletin of the London Mathematical Society, Volume 58, Issue 10, October 2026.Abstract We prove that the Lipschitz‐free space over any uniformly discrete metric space has the 3‐Schur property.
Marek Cúth, Ondřej F. K. Kalenda
wiley +1 more source
Hybrid Coupling With Operator Inference and the Overlapping Schwarz Alternating Method
International Journal for Numerical Methods in Engineering, Volume 127, Issue 17, 15 September 2026.ABSTRACT This paper presents a hybrid approach for coupling subdomain‐local, nonintrusive Operator Inference (OpInf) reduced order models (ROMs) with each other and with subdomain‐local, high‐fidelity full order models (FOMs) using the overlapping Schwarz alternating method (O‐SAM).
Irina Tezaur +5 more
wiley +1 more source
Skew-Linked Partitions and a Representation-Theoretic Model for k-Schur Functions [PDF]
, 2010 In 2001, Lapointe, Lascoux, and Morse discovered a class of symmetric functions called k-Schur functions. These functions have many properties similar to Schur functions and were motivated by a conjectured refinement of the Macdonald positivity ...
Chen, Li-Chung
core +1 more source
ON SOME FACTORIZATION FORMULAS OF $K$-$k$-SCHUR FUNCTIONS (Combinatorics of Lie Type) [PDF]
, 2017 We give some new formulas about factorizations of K-ksim Schur functions g_{$lambda$}^{(k)}, analogous to the k-rectangle factorization formula s_{(t^{k+1-mathrm{t}})cup $lambda$}^{(k)}= s_{(t^{k+1-t})}^{(k)}s_{$lambda$}^{(k)} of k-Schur functions ...
Takigiku, Motoki
core
A Pieri-type formula and a factorization formula for sums of $K$-$k$-Schur functions
, 2018 33 pages, revised thoroughly, results ...
openaire +2 more sources