Search Results - "SPARSE approximations"

Graph-based Square-Root Estimation for Sparse Linear Regression.

Authors: Li, Peili Li, Zhuomei Xiao, Yunhai et al.

Source: Journal of Computational & Graphical Statistics. Oct2025, p1-30. 30p. 3 Illustrations.

Subject Terms: *DATA structures, SPARSE approximations, SPARSE graphs, MINIMUM variance estimation, ROOT-mean-squares, STATISTICAL models, RIDGE regression (Statistics), OPTIMIZATION algorithms

Sparse identification of nonlinear dynamics applied to the acoustic levitation of acoustically large objects.

Authors: Akbarzadeh, Mehdi Halkon, Benjamin Oberst, Sebastian

Source: Scientific Reports. 11/19/2025, Vol. 15 Issue 1, p1-10. 10p.

Subject Terms: *ACOUSTIC radiation force, *SPARSE approximations, *TIME-resolved measurements, *NONLINEAR mechanics, *BIFURCATION diagrams, *VISCOSITY

A novel Variable Fractional delay filter design with sparsity within and across groups for wideband beamforming.

Authors: Zhou, Wenjing Xu, Min Shen, Mingwei

Source: Remote Sensing Letters. Oct2025, Vol. 16 Issue 10, p1046-1056. 11p.

Subject Terms: *BEAMFORMING, *SPARSE approximations, *FINITE impulse response filters, *ENGINEERING design, *COST functions, *ELECTRIC filters, *SIGNAL processing

SEMIPARAMETRIC ESTIMATION AND VARIABLE SELECTION FOR SPARSE SINGLE INDEX MODELS IN INCREASING DIMENSION.

Authors: Dong, Chaohua Tu, Yundong

Source: Econometric Theory. Jun2025, Vol. 41 Issue 3, p617-659. 43p.

Subject Terms: FEATURE selection, SPARSE approximations, RIDGE regression (Statistics), STATISTICAL models, HERMITE polynomials, ASYMPTOTIC normality, NONPARAMETRIC estimation

Computing One-Bit Compressive Sensing via Alternating Proximal Algorithm.

Authors: Wang, Jin-Jiang Hu, Yan-Hong

Source: Mathematics (2227-7390). Sep2025, Vol. 13 Issue 18, p2926. 15p.

Subject Terms: *COMPRESSED sensing, *SPARSE approximations, *OPTIMIZATION algorithms, *ASYMPTOTIC analysis, *NONSMOOTH optimization

A Unified Theoretical Analysis of Geometric Representation Forms in Descriptive Geometry and Sparse Representation Theory.

Authors: Mei, Shuli¹ (AUTHOR)

Source: Mathematics (2227-7390). Sep2025, Vol. 13 Issue 17, p2737. 23p.

Subject Terms: *MATHEMATICAL optimization, *SPARSE approximations, *MATHEMATICAL models, *ENGINEERING design, *SIGNAL reconstruction, *GEOMETRIC shapes, *INTERDISCIPLINARY education, *TECHNICAL drawing

Non-Convex Sparse Regularization Image Restoration via Atan Function.

Authors: Zhijun Luo Zhibin Zhu Lirong Wang et al.

Source: IAENG International Journal of Applied Mathematics. Aug2025, Vol. 55 Issue 8, p2521-2527. 7p.

Subject Terms: *IMAGE reconstruction, *SPARSE approximations, *MATHEMATICAL programming, *MULTIPLIERS (Mathematical analysis), *MATHEMATICAL functions, *NONCONVEX programming

A subspace-based total variation regularization for sparse hyperspectral image unmixing.

Authors: Cai, Yu-Bin Huang, Jie

Source: International Journal of Remote Sensing. Aug2025, Vol. 46 Issue 15, p5673-5694. 22p.

Subject Terms: *HYPERSPECTRAL imaging systems, *SPARSE approximations, *DIMENSIONAL reduction algorithms, *ITERATIVE methods (Mathematics), *MATHEMATICAL regularization, *IMAGE processing

An Efficient Sparse Twin Parametric Insensitive Support Vector Regression Model.

Authors: Qu, Shuanghong Guo, Yushan De Leone, Renato et al.

Source: Mathematics (2227-7390). Jul2025, Vol. 13 Issue 13, p2206. 29p.

Subject Terms: *SPARSE approximations, *GENERALIZATION, *SUPPORT vector machines, *DESIGN, *FORECASTING, *MATHEMATICAL optimization

A Reassessment of Likelihood Approximation by Integration on Sparse Grids.

Authors: Madaras, Szilárd Sándor, Zsolt

Source: Journal of Applied Econometrics. Mar2025, Vol. 40 Issue 2, p237-245. 9p.

Subject Terms: *DISCRETE choice models, *PROBABILITY theory, SPARSE approximations, INTEGRALS

Chemistry beyond the scale of exact diagonalization on a quantum-centric supercomputer.

Authors: Robledo-Moreno, Javier Motta, Mario Haas, Holger et al.

Source: Science Advances. 6/20/2025, Vol. 11 Issue 25, p1-14. 14p.

Subject Terms: *DISTRIBUTED computing, *SPARSE approximations, *ELECTRONIC structure, *ELECTRONIC equipment, *WAVE functions, *QUANTUM computers

System identification based on sparse approximation of Koopman operator.

Authors: Lu, Tiantian Feng, Jinqian Su, Jin et al.

Source: European Physical Journal: Special Topics. Jun2025, Vol. 234 Issue 3, p571-584. 14p.

Subject Terms: *SPARSE approximations, *SYSTEM identification, *FUNCTION spaces, *NONLINEAR systems, *LINEAR operators

Sampling Recovery on Function Classes with a Structural Condition.

Authors: Solodov, A. P. Temlyakov, V. N.

Source: Mathematical Notes. Apr2025, Vol. 117 Issue 3, p603-616. 14p.

Subject Terms: *SPARSE approximations, *APPROXIMATION theory, *NONLINEAR theories, *CUBES, *MOTIVATION (Psychology), *SMOOTHNESS of functions

Oracle inequalities for weighted group Lasso in high-dimensional Poisson regression model.

Authors: Peng, Ling^1,2 (AUTHOR) pengling@jxufe.edu.cn

Source: Communications in Statistics: Theory & Methods. 2024, Vol. 53 Issue 19, p6891-6917. 27p.

Subject Terms: *REGRESSION analysis, *FORECASTING, SPARSE approximations, POISSON regression

Efficient Algorithms for Regularized Nonnegative Scale-Invariant Low-Rank Approximation Models

Authors: Jeremy E. Cohen Valentin Leplat Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS) et al.

Contributors: Jeremy E. Cohen Valentin Leplat Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS) et al.

Source: SIAM Journal on Mathematics of Data Science. 7:468-494

Subject Terms: FOS: Computer and information sciences, non-convex optimization, Computer Science - Machine Learning, Constrained low-rank approximations, Numerical Analysis (math.NA), sparse approximation, Machine Learning (cs.LG), [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing, Constrained low-rank approximations non-convex optimization sparse approximation, Optimization and Control (math.OC), FOS: Mathematics, Mathematics - Numerical Analysis, Mathematics - Optimization and Control, sparse approximations

Access URL: http://arxiv.org/abs/2403.18517

Hyperspectral image destriping with spectral tensor sparse approximation.

Authors: Liu, Hong Ma, Jie Huang, Zhiyong et al.

Source: Journal of Supercomputing. Mar2025, Vol. 81 Issue 4, p1-39. 39p.

Subject Terms: *SPARSE approximations, *CIRCULANT matrices, *MATRIX inversion, *SPECTRAL reflectance, *SPECTRAL imaging, *SINGULAR value decomposition

Bayesian Functional Region Selection.

Authors: Zhu, Hongxiao Sun, Yizhi Lee, Jaeyoung

Source: Stat. Mar2025, Vol. 14 Issue 1, p1-14. 14p.

Subject Terms: *BAYESIAN analysis, *SPARSE approximations, *FEATURE extraction, *INFERENTIAL statistics, *FUNCTIONAL analysis

Generation of Sparse Antennas and Scatterers Based on Optimal Current Grid Approximation.

Authors: Dang, Tuan Phuong Nguyen, Manh Tuan Hasan, Adnan F. Alhaj et al.

Source: Algorithms. Mar2025, Vol. 18 Issue 3, p171. 37p.

Subject Terms: *SPARSE approximations, *ANTENNAS (Electronics), *ELECTROMAGNETIC devices, *SURFACE scattering, *MOMENTS method (Statistics)

GAUSSIAN PROCESS REGRESSION UNDER COMPUTATIONAL AND EPISTEMIC MISSPECIFICATION.

Authors: SANZ-ALONSO, DANIEL RUIYI YANG

Source: SIAM Journal on Numerical Analysis. 2025, Vol. 63 Issue 2, p495-519. 25p.

Subject Terms: *KRIGING, *SPARSE approximations, *KERNEL functions, *APPROXIMATION error, *INTERPOLATION

Sparse approximation of complex networks.

Authors: De la Cruz Cabrera, Omar Jin, Jiafeng Reichel, Lothar

Source: Applied Numerical Mathematics. Feb2025:Part A, Vol. 208, p170-188. 19p.

Subject Terms: *SPARSE approximations, *NEWTON-Raphson method, *REGULARIZATION parameter, *NOISE, *CONJUGATE gradient methods