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We introduce a new linearly constrained minimum variance (LCMV) beamformer that combines the set-membership (SM) technique with the conjugate gradient (CG) method, and develop a low-complexity adaptive filtering algorithm for beamforming.…

信息论 · 计算机科学 2013-03-06 Lei Wang , Rodrigo C. de Lamare

Inference of gene regulatory networks (GRNs) based on experimental data is a challenging task in bioinformatics. In this paper, we present a bi-objective minimization model (BoMM) for inference of GRNs, where one objective is the fitting…

计算工程、金融与科学 · 计算机科学 2015-12-17 Yu Chen , Xiufen Zou

Likelihood-based deep generative models (DGMs) have gained significant attention for their ability to approximate the distributions of high-dimensional data. However, these models lack a performance guarantee in assigning higher likelihood…

机器学习 · 计算机科学 2025-02-04 Behrooz Montazeran , Ullrich Köthe

Visible-infrared person re-identification (VI-ReID) is a challenging and essential task, which aims to retrieve a set of person images over visible and infrared camera views. In order to mitigate the impact of large modality discrepancy…

计算机视觉与模式识别 · 计算机科学 2023-07-26 Haojie Liu , Daoxun Xia , Wei Jiang , Chao Xu

In economics and social science, network data are regularly observed, and a thorough understanding of the network community structure facilitates the comprehension of economic patterns and activities. Consider an undirected network with $n$…

统计方法学 · 统计学 2022-12-23 Jiashun Jin , Zheng Tracy Ke , Shengming Luo

Mixed membership community detection is a challenging problem. In this paper, to detect mixed memberships, we propose a new method Mixed-SLIM which is a spectral clustering method on the symmetrized Laplacian inverse matrix under the…

机器学习 · 统计学 2024-04-08 Huan Qing , Jingli Wang

Multimodal learning with incomplete input data (missing modality) is practical and challenging. In this work, we conduct an in-depth analysis of this challenge and find that modality dominance has a significant negative impact on the model…

计算机视觉与模式识别 · 计算机科学 2024-02-27 Hao Wang , Shengda Luo , Guosheng Hu , Jianguo Zhang

Class imbalance in graph data presents significant challenges for node classification. While existing methods, such as SMOTE-based approaches, partially mitigate this issue, they still exhibit limitations in constructing imbalanced graphs.…

机器学习 · 计算机科学 2024-03-28 Yulan Hu , Sheng Ouyang , Zhirui Yang , Yong Liu

The generalized persistence (GP) model, developed in the context of estimating ``value added'' by individual teachers to their students' current and future test scores, is one of the most flexible value-added models in the literature.…

应用统计 · 统计学 2014-04-01 Andrew T. Karl , Yan Yang , Sharon L. Lohr

The stochastic block model (SBM) is a fundamental tool for community detection in networks, yet the finite-sample performance of inference methods remains underexplored. We evaluate key algorithms-spectral methods, variational inference,…

社会与信息网络 · 计算机科学 2024-12-06 Tianjun Ke , Zhiyu Xu

In single-photon light detection and ranging (SP-LiDAR) systems, the histogram distortion due to hardware dead time fundamentally limits the precision of depth estimation. To compensate for the dead time effects, the photon registration…

信号处理 · 电气工程与系统科学 2024-07-04 Weijian Zhang , Hashan K. Weerasooriya , Prateek Chennuri , Stanley H. Chan

Recent work has shown that finite mixture models with $m$ components are identifiable, while making no assumptions on the mixture components, so long as one has access to groups of samples of size $2m-1$ which are known to come from the…

统计理论 · 数学 2022-07-25 Robert A. Vandermeulen , René Saitenmacher

In this study, a novel machine learning algorithm, restricted Boltzmann machine (RBM), is introduced. The algorithm is applied for the spectral classification in astronomy. RBM is a bipartite generative graphical model with two separate…

机器学习 · 计算机科学 2013-10-15 Fuqiang Chen , Yan Wu , Yude Bu , Guodong Zhao

We introduce a supervised dimensionality reduction methodology for categorical (and discretized mixed-type) data based on a density-matrix construction induced by class-conditional frequencies. Given a labeled dataset encoded in a one-hot…

机器学习 · 统计学 2026-03-03 Raquel Bosch-Romeu , Antonio Falcó , osé-Antonio Rodríguez-Gallego

Singular value decomposition (SVD) is widely used in wireless systems, including multiple-input multiple-output (MIMO) processing and dimension reduction in distributed MIMO (D-MIMO). However, the iterative nature of decomposition methods…

信号处理 · 电气工程与系统科学 2025-09-24 Sijia Cheng , Liang Liu , Ove Edfors , Juan Vidal Alegria

Vision-Language Models (VLMs) have broad potential in privacy-sensitive domains such as healthcare and finance, yet strict data-sharing constraints render centralized training infeasible. Federated Learning mitigates this issue by enabling…

人工智能 · 计算机科学 2026-05-06 Shule Lu , Yujing Wang , Hainan Zhang , Xiaoshan Yang , Hongwei Zheng , Yongxin Tong , Changsheng Xu , Zhiming Zheng

Spectral embedding based on the Singular Value Decomposition (SVD) is a widely used "preprocessing" step in many learning tasks, typically leading to dimensionality reduction by projecting onto a number of dominant singular vectors and…

机器学习 · 统计学 2015-09-29 Dinesh Ramasamy , Upamanyu Madhow

Endmember (EM) spectral variability can greatly impact the performance of standard hyperspectral image analysis algorithms. Extended parametric models have been successfully applied to account for the EM spectral variability. However, these…

计算机视觉与模式识别 · 计算机科学 2019-11-22 Ricardo Augusto Borsoi , Tales Imbiriba , José Carlos Moreira Bermudez

The rapid adoption of synthetic data for training Large Language Models (LLMs) has introduced the technical challenge of "model collapse"-a degenerative process where recursive training on model-generated content leads to a contraction of…

机器学习 · 计算机科学 2026-03-24 Yi Gu , Lingyou Pang , Xiangkun Ye , Tianyu Wang , Jianyu Lin , Carey E. Priebe , Alexander Aue

Accurate monocular depth estimation remains a challenging problem due to the inherent ambiguity that stems from the ill-posed nature of recovering 3D structure from a single view, where multiple plausible depth configurations can produce…

计算机视觉与模式识别 · 计算机科学 2025-08-06 Heng Wu , Qian Zhang , Guixu Zhang