Results 231 to 240 of about 18,335 (312)

On the Cheeger Inequality in Carnot-Carathéodory Spaces. [PDF]

J Geom Anal
Kluitenberg M.
europepmc   +1 more source

An Extended Krylov Subspace Method for Decoding Edge‐Based Compressed Images by Homogeneous Diffusion

Numerical Linear Algebra with Applications, Volume 33, Issue 1, February 2026.
ABSTRACT The heat equation is often used to inpaint dropped data in inpainting‐based lossy compression schemes. We propose an alternative way to numerically solve the heat equation by an extended Krylov subspace method. The method is very efficient with respect to the computation of the solution of the heat equation at large times.
Volker Grimm, Kevin Liang
wiley   +1 more source

Gaussian Versus Mean-Field Models: Contradictory Predictions for the Casimir Force Under Dirichlet-Neumann Boundary Conditions. [PDF]

Entropy (Basel)
Dantchev D, Vassilev V, Rudnick J.
europepmc   +1 more source

Clustering of Longitudinal Data: A Tutorial on a Variety of Approaches

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 1, February 2026.
ABSTRACT During the past two decades, methods for identifying groups with different trends in longitudinal data involving a single numeric outcome have become of increasing interest across many areas of research. To support researchers, we summarize the guidance from literature regarding the clustering of such data.
N. G. P. Den Teuling, S. C. Pauws, E. R. van den Heuvel   +2 more
wiley   +1 more source

Stabilizing Inference in Dirichlet Regression via Ridge‐Penalized Model

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 1, February 2026.
ABSTRACT We propose a penalized Dirichlet regression framework for modeling compositional data, using a softmax link to ensure that the mean vector lies on the simplex and to avoid log‐ratio transformations or zero replacement. The model is formulated in a GLM‐like setting and incorporates an ℓ2$$ {\mathrm{\ell}}_2 $$ (ridge) penalty on the regression ...
Andrea Nigri
wiley   +1 more source

Model-based clustering of time-dependent observations with common structural changes. [PDF]

Stat Comput
Corradin R, Danese L, KhudaBukhsh WR, Ongaro A.   +3 more
europepmc   +1 more source

Contribution of non‐orthogonal multiple access signalling to practical multibeam satellite deployments

International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 73-88, January/February 2026.
The potential gains of NOMA were evaluated in a satellite system with heterogeneous receivers, after considering the use of specific DVB‐S2X MODCODs, along with the impact of non‐linearities. It was concluded that a judicious power allocation in NOMA, jointly optimized with the IBO of the PAs, can yield significant sum‐rate gains.
Tomás Ramírez, Carlos Mosquera
wiley   +1 more source

Improving ulcerative colitis prospects through fecal microbiota transfer: atypical donor microbiota can boost success rate. [PDF]

Gut Microbes
van de Guchte M, Mondot S, Cadiou J, Raghuvanshi R, Rous C, Doré J.   +5 more
europepmc   +1 more source

Are less hierarchical firms organized around stronger cultures? Evidence from big data

Strategic Management Journal, Volume 47, Issue 2, Page 463-493, February 2026.
Abstract Research Summary Are less hierarchical firms organized around stronger cultures instead? We analyze 1.5 million employee reviews on Glassdoor.com from 23,000 US‐based firms, alongside data on managerial hierarchy estimated from 42 million professional social media profiles.
Arianna Marchetti, Phanish Puranam
wiley   +1 more source