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We develop a new compressive sensing (CS) inversion algorithm by utilizing the Gaussian mixture model (GMM). While the compressive sensing is performed globally on the entire image as implemented in our lensless camera, a low-rank GMM is…

机器学习 · 统计学 2015-08-28 Xin Yuan , Hong Jiang , Gang Huang , Paul A. Wilford

Traditional volumetric noise control typically relies on multipoint error minimization to suppress sound energy across a region, but offers limited flexibility in shaping spatial responses. This paper introduces a time domain formulation…

声音 · 计算机科学 2025-09-19 Manan Mittal , Ryan M. Corey , Andrew C. Singer

To realize mmWave massive MIMO systems in practice, Beamspace MIMO with beam selection provides an attractive solution at a considerably reduced number of radio frequency (RF) chains. We propose low-complexity beam selection algorithms…

信息论 · 计算机科学 2022-07-12 Jinxing Yang , Jihong Yu , Shuai Wang , Hao Liu

This letter introduces a low-complexity beamforming approach for MU-MIMO systems with multiple data streams per user, minimizing inter-user interference and improving spectral efficiency (SE). The Interference-Optimized Singular Vector…

信号处理 · 电气工程与系统科学 2025-01-07 Md Saheed Ullah , Rafid Umayer Murshed , Mohammad Saquib , Md. Forkan Uddin

In this paper, we consider a novel optimization design for multi-waveguide pinching-antenna systems, aiming to maximize the weighted sum rate (WSR) by jointly optimizing beamforming coefficients and antenna position. To handle the…

信息检索 · 计算机科学 2025-06-17 Kang Zhou , Weixi Zhou , Donghong Cai , Xianfu Lei , Yanqing Xu , Zhiguo Ding , Pingzhi Fan

It is well-known that the high computational complexity and the insufficient samples in large-scale array signal processing restrict the real-world applications of the conventional full-dimensional adaptive beamforming (sample matrix…

信息论 · 计算机科学 2014-05-20 Hu Xie , Da-Zheng Feng , Ming-Dong Yuan

Latent Factor Model (LFM) is one of the most successful methods for Collaborative filtering (CF) in the recommendation system, in which both users and items are projected into a joint latent factor space. Base on matrix factorization…

信息检索 · 计算机科学 2021-05-19 Jiansheng Fang , Xiaoqing Zhang , Yan Hu , Yanwu Xu , Ming Yang , Jiang Liu

The Recently proposed Vector Approximate Message Passing (VAMP) algorithm demonstrates a great reconstruction potential at solving compressed sensing related linear inverse problems. VAMP provides high per-iteration improvement, can utilize…

信息论 · 计算机科学 2024-10-30 Nikolajs Skuratovs , Michael Davies

In this paper, adaptive hybrid beamforming methods are proposed for millimeter-wave range massive multiple-input-multiple-output (MIMO) systems considering single carrier wideband transmission in uplink data mode. A statistical analog…

信息论 · 计算机科学 2020-07-02 Anil Kurt , Gokhan Muzaffer Guvensen

This paper exploits Geometric (Clifford) Algebra (GA) theory in order to devise and introduce a new adaptive filtering strategy. From a least-squares cost function, the gradient is calculated following results from Geometric Calculus (GC),…

计算机视觉与模式识别 · 计算机科学 2016-05-25 Wilder B. Lopes , Anas Al-Nuaimi , Cassio G. Lopes

Convolutional beamformers integrate the multichannel linear prediction model into beamformers, which provide good performance and optimality for joint dereverberation and noise reduction tasks. While longer filters are required to model…

音频与语音处理 · 电气工程与系统科学 2021-07-15 Sebastian Braun , Ivan Tashev

Estimation and counterfactual experiments in dynamic discrete choice models with large state spaces pose computational difficulties. This paper proposes a model-adaptive approach, based on the conjugate gradient (CG) method, to solve the…

计量经济学 · 经济学 2026-03-18 Ertian Chen

Probing beam measurement (PBM)-based hybrid beamforming provides a feasible solution for cell-free MIMO. In this letter, we propose a novel probing beam optimization framework where three collaborative modules respectively realize PBM…

信息论 · 计算机科学 2024-09-23 Cheng Zhang , Shuangbo Xiong , Mengqing He , Lan Wei , Yongming Huang , Wei Zhang

The Conjugate Gradient method (CGM) is known to be the fastest generic iterative method for solving linear systems with symmetric sign definite matrices. In this paper, we modify this method so that it could find fundamental solitary waves…

斑图形成与孤子 · 物理学 2015-05-13 Taras I. Lakoba

Due to their high computational complexity, deep neural networks are still limited to powerful processing units. To promote a reduced model complexity by dint of low-bit fixed-point quantization, we propose a gradient-based optimization…

机器学习 · 计算机科学 2019-07-18 Lukas Enderich , Fabian Timm , Lars Rosenbaum , Wolfram Burgard

We introduce a new method to determine galaxy cluster membership based solely on photometric properties. We adopt a machine learning approach to recover a cluster membership probability from galaxy photometric parameters and finally derive…

宇宙学与河外天体物理 · 物理学 2020-02-26 P. A. A. Lopes , A. L. B. Ribeiro

This paper presents a seamless algorithm for the application of the multilevel Monte Carlo (MLMC) method to the ensemble transform particle filter (ETPF). The algorithm uses a combination of optimal coupling transformations between coarse…

数值分析 · 数学 2017-06-15 Alastair Gregory , Colin Cotter

We present a numerically efficient Nonlinear Model Predictive Control (NMPC) approach, called Set Membership based NMPC (SM-NMPC). In particular, a Set Membership method is used to derive from data an approximation and tight bounds on the…

系统与控制 · 电气工程与系统科学 2023-02-01 Mattia Boggio , Carlo Novara , Michele Taragna

In this paper, we propose low-complexity robust adaptive beamforming (RAB) techniques that based on shrinkage methods. The only prior knowledge required by the proposed algorithms are the angular sector in which the actual steering vector…

信息论 · 计算机科学 2015-05-27 H. Ruan , R. C. de Lamare

Mixtures of linear mixed models (MLMMs) are useful for clustering grouped data and can be estimated by likelihood maximization through the EM algorithm. The conventional approach to determining a suitable number of components is to compare…

应用统计 · 统计学 2014-05-26 Siew Li Tan , David J. Nott