Results 31 to 40 of about 1,280 (91)

A Tree‐Based Model for Addressing Sparsity and Taxa Covariance in Microbiome Compositional Count Data

Statistics in Medicine, Volume 45, Issue 10-12, May 2026.
ABSTRACT Microbiome compositional data are often high‐dimensional, sparse, and exhibit pervasive cross‐sample heterogeneity. We introduce the “logistic‐tree normal” (LTN) model, a generative model that allows flexible covariance among the microbiome taxa, enables scalable computation, and effectively captures other key characteristics of microbiome ...
Zhuoqun Wang, Jialiang Mao, Li Ma
wiley   +1 more source

Non‐Migrating Thermal Tides in the Martian Lower Atmosphere Observed by EMM/EMIRS

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Thermal tides significantly influence Martian atmospheric dynamics and radiative transfer. However, the excitation mechanisms of non‐migrating tides, exhibiting diverse spatial structures, remain poorly understood due to the limited number of observations.
Cong Sun, Siteng Fan, François Forget, Michael D. Smith, Sandrine Guerlet, Tao Li, Chengyun Yang, Lulu Li, Khalid M. Badri, Samuel A. Atwood, Christopher S. Edwards, Justin Deighan, Hessa R. Al Matroushi, Ehouarn Millour   +13 more
wiley   +1 more source

Glass bead games: enumeration of possible polytypes based on two stacking vectors and applications to the iron‐ore sinter phases SFCA and SFCA‐I

Acta Crystallographica Section A, Volume 82, Issue 3, Page 145-162, May 2026.
General formulas are presented that allow for the enumeration of polytypes based on translationally equivalent layers and two equivalent arrangements of adjacent layers involving distinct possible stacking vectors, t1 and t2. The results have been applied to the polytypism among two different polysomes of the family of so‐called silico‐ferrites of ...
Michael Francesco Salzmann, Volker Kahlenberg, Hannes Krüger, Tim Netzer   +3 more
wiley   +1 more source

Moving Sum Procedure for Multiple Change Point Detection in Large Factor Models

Journal of Time Series Analysis, Volume 47, Issue 3, Page 450-464, May 2026.
ABSTRACT This paper proposes a moving sum methodology for detecting multiple change points in high‐dimensional time series under a factor model, where changes are attributed to those in loadings as well as emergence or disappearance of factors. We establish the asymptotic null distribution of the proposed test for family‐wise error control and show the
Matteo Barigozzi, Haeran Cho, Lorenzo Trapani   +2 more
wiley   +1 more source

On the exceptional set in Littlewood's discrete conjecture

Bulletin of the London Mathematical Society, Volume 58, Issue 5, May 2026.
Abstract We consider a discrete analogue of the well‐known Littlewood conjecture on Diophantine approximations and obtain a strong upper bound for the number of exceptional vectors in this conjecture.
I. D. Shkredov
wiley   +1 more source

Critical points and syzygies for Feynman integrals. [PDF]

J High Energy Phys
Page B, Song Q.
europepmc   +1 more source

Interpretation drift in explainable AI under label noise. [PDF]

Sci Rep
Raikovskaia A, Rakhimzhanov N, Pianykh OS.   +2 more
europepmc   +1 more source

NONLINEAR GLOBAL FRÉCHET REGRESSION FOR RANDOM OBJECTS VIA WEAK CONDITIONAL EXPECTATION. [PDF]

Ann Stat
Bhattacharjee S, Li B, Xue L.
europepmc   +1 more source

<i>P</i>-adic <i>L</i>-functions for GL ( 3 ). [PDF]

Math Ann
Loeffler D, Williams C.
europepmc   +1 more source

Realizing Shor's algorithm with topological acoustic phase bits. [PDF]

Commun Eng
Kuk I, Djordjevic IB, Runge K, Gabitov IR, Deymier PA.   +4 more
europepmc   +1 more source