Results 91 to 100 of about 96,224 (213)
scSCC: A swapped contrastive learning‐based clustering method for single‐cell gene expression data
Quantitative Biology, Volume 13, Issue 2, June 2025.Abstract Cell clustering plays a pivotal role in deciphering the intricacies of cell types, facilitating subsequent cell annotation endeavors within scRNA‐seq data analysis. In this paper, we propose a novel swapped contrastive clustering algorithm for scRNA‐seq data called scSCC.
Xiang Wang, Sansheng Yang, Hongwei Li
wiley +1 more source
Randomly pivoted Cholesky: Practical approximation of a kernel matrix with few entry evaluations
Communications on Pure and Applied Mathematics, Volume 78, Issue 5, Page 995-1041, May 2025.Abstract The randomly pivoted Cholesky algorithm (RPCholesky) computes a factorized rank‐k$k$ approximation of an N×N$N \times N$ positive‐semidefinite (psd) matrix. RPCholesky requires only (k+1)N$(k + 1)N$ entry evaluations and O(k2N)$\mathcal {O}(k^2 N)$ additional arithmetic operations, and it can be implemented with just a few lines of code.
Yifan Chen +3 more
wiley +1 more source
An Inertia Correction Scheme for Hydrodynamic Lubrication Problems
International Journal for Numerical Methods in Fluids, Volume 97, Issue 5, Page 830-839, May 2025.A new numerical approach for accurately calculating the bearing pressure distribution in hydrodynamic lubrication problems, including convective fluid inertia and film discontinuities is presented. Two approaches to estimating the pressure correction due to fluid inertia are discussed: the Bernoulli effect and the averaged inertia.
Seyhan Ozen, C. Oktay Azeloglu
wiley +1 more source
Restart Perturbations for Reversible Markov Chains: Trichotomy and Pre‐Cutoff Equivalence
Random Structures &Algorithms, Volume 66, Issue 3, May 2025.ABSTRACT Given a reversible Markov chain Pn$$ {P}_n $$ on n$$ n $$ states, and another chain P˜n$$ {\tilde{P}}_n $$ obtained by perturbing each row of Pn$$ {P}_n $$ by at most αn$$ {\alpha}_n $$ in total variation, we study the total variation distance between the two stationary distributions, ‖πn−π˜n‖$$ \left\Vert {\pi}_n-{\tilde{\pi}}_n\right\Vert $$.
Daniel Vial, Vijay Subramanian
wiley +1 more source
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 105, Issue 5, May 2025.Abstract The unique mechanical properties and versatile applications of curved nanobeams have gained significant attention among researchers, as understanding their mechanical behavior is essential for precise control at the atomic scale. In this study, the out‐of‐plane static behavior of curved nanobeams resting on an elastic foundation is ...
Reha Artan, Ayşegül Tepe
wiley +1 more source
Frequency‐adjusted borders ordinal forest: A novel tree ensemble method for ordinal prediction
British Journal of Mathematical and Statistical Psychology, Volume 78, Issue 2, Page 594-616, May 2025.Abstract Ordinal responses commonly occur in psychology, e.g., through school grades or rating scales. Where traditionally parametric statistical models like the proportional odds model have been used, machine learning (ML) methods such as random forest (RF) are increasingly employed for ordinal prediction.
Philip Buczak
wiley +1 more source
Testing covariance separability for continuous functional data
Journal of Time Series Analysis, Volume 46, Issue 3, Page 402-420, May 2025.Analyzing the covariance structure of data is a fundamental task of statistics. While this task is simple for low‐dimensional observations, it becomes challenging for more intricate objects, such as multi‐variate functions. Here, the covariance can be so complex that just saving a non‐parametric estimate is impractical and structural assumptions are ...
Holger Dette +2 more
wiley +1 more source
Ecology and Evolution, Volume 15, Issue 4, April 2025.Regional extinction rates can be higher or lower than local rates. Using simulations, we investigate the ecological mechanisms behind this apparent paradox. Specifically, we show that when the mortality of individuals decreases with population density, regional extinction rates are higher than local ones, and vice versa. ABSTRACT Assessment of the rate
Petr Keil +3 more
wiley +1 more source
A Curriculum Integrating STEAM and Maker Education Promotes Pupils' Learning Motivation, Self-Efficacy, and Interdisciplinary Knowledge Acquisition. [PDF]
Front Psychol, 2021 Jia Y, Zhou B, Zheng X.
europepmc +1 more source
Engineering Reports, Volume 7, Issue 4, April 2025.ABSTRACT Advancements in modern engineering design require materials that maintain thermal and mechanical stability under diverse conditions. To promote sustainability and eco‐friendliness, researchers are increasingly exploring natural alternatives to synthetic fibers.
Md Atiqur Rahman +3 more
wiley +1 more source