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In this paper, we introduce an Adaptive Graph Signal Processing with Dynamic Semantic Alignment (AGSP DSA) framework to perform robust multimodal data fusion over heterogeneous sources, including text, audio, and images. The requested…

计算机视觉与模式识别 · 计算机科学 2026-01-27 KV Karthikeya , Ashok Kumar Das , Shantanu Pal , Vivekananda Bhat K , Arun Sekar Rajasekaran

In this paper, we propose a novel Dual Inexact Splitting Algorithm (DISA) for distributed convex composite optimization problems, where the local loss function consists of a smooth term and a possibly nonsmooth term composed with a linear…

最优化与控制 · 数学 2023-04-25 Luyao Guo , Xinli Shi , Shaofu Yang , Jinde Cao

The problem of detecting and measuring the repetitiveness of one-dimensional strings has been extensively studied in data compression and text indexing. Our understanding of these issues has been significantly improved by the introduction…

数据结构与算法 · 计算机科学 2025-05-19 Lorenzo Carfagna , Giovanni Manzini , Giuseppe Romana , Marinella Sciortino , Cristian Urbina

The incremental aggregated gradient algorithm is popular in network optimization and machine learning research. However, the current convergence results require the objective function to be strongly convex. And the existing convergence…

最优化与控制 · 数学 2019-10-14 Tao Sun , Yuejiao Sun , Dongsheng Li , Qing Liao

Stochastic approximation (SA) is a powerful class of iterative algorithms for nonlinear root-finding that can be used for minimizing a loss function, $L(\boldsymbol{\theta})$, with respect to a parameter vector $\boldsymbol{\theta}$, when…

最优化与控制 · 数学 2017-07-24 Karla Hernández Cuevas

Domain Generalized Semantic Segmentation (DGSS) seeks to utilize source domain data exclusively to enhance the generalization of semantic segmentation across unknown target domains. Prevailing studies predominantly concentrate on feature…

计算机视觉与模式识别 · 计算机科学 2024-12-17 Hongwei Niu , Linhuang Xie , Jianghang Lin , Shengchuan Zhang

An estimation problem of fundamental interest is that of phase synchronization, in which the goal is to recover a collection of phases using noisy measurements of relative phases. It is known that in the Gaussian noise setting, the maximum…

最优化与控制 · 数学 2016-11-02 Huikang Liu , Man-Chung Yue , Anthony Man-Cho So

Grad-div stabilization is a classical remedy in conforming mixed finite element methods for incompressible flow problems, for mitigating velocity errors that are sometimes called poor mass conservation. Such errors arise due to the…

数值分析 · 数学 2019-04-12 Mine Akbas , Alexander Linke , Leo G. Rebholz , Philipp W. Schroeder

This paper intends to apply the sample-average-approximation (SAA) scheme to solve a system of stochastic equations (SSE), which has many applications in a variety of fields. The SAA is an effective paradigm to address risks and uncertainty…

数值分析 · 数学 2024-03-04 Peixuan Li , Chuangyin Dang , Yang Zhan

Stochastic Gradient Descent (SGD) is the key learning algorithm for many machine learning tasks. Because of its computational costs, there is a growing interest in accelerating SGD on HPC resources like GPU clusters. However, the…

机器学习 · 计算机科学 2021-01-20 Peng Jiang , Gagan Agrawal

Digital subtraction angiography (DSA) is a key imaging technique for the auxiliary diagnosis and treatment of cerebrovascular diseases. Recent advancements in gaussian splatting and dynamic neural representations have enabled robust 3D…

计算机视觉与模式识别 · 计算机科学 2026-03-06 Shiyu Zhang , Zhicong Wu , Huangxuan Zhao , Zhentao Liu , Lei Chen , Yong Luo , Lefei Zhang , Zhiming Cui , Ziwen Ke , Bo Du

Machine learning models trained with \emph{stochastic} gradient descent (SGD) can generalize better than those trained with deterministic gradient descent (GD). In this work, we study SGD's impact on generalization through the lens of the…

机器学习 · 计算机科学 2025-12-09 Hongjian Lan , Yucong Liu , Florian Schäfer

Generative Adversarial Networks (GANs) based semi-supervised learning (SSL) approaches are shown to improve classification performance by utilizing a large number of unlabeled samples in conjunction with limited labeled samples. However,…

机器学习 · 计算机科学 2020-09-16 Zexi Chen , Bharathkumar Ramachandra , Ranga Raju Vatsavai

Decentralized optimization algorithms have recently attracted increasing attention due to its wide applications in all areas of science and engineering. In these algorithms, a collection of agents collaborate to minimize the average of a…

最优化与控制 · 数学 2024-09-18 Shujing Feng , Xin Jiang

Algorithms for convex feasibility find or approximate a point in the intersection of given closed convex sets. Typically there are only finitely many convex sets, but the case of infinitely many convex sets also has some applications. In…

最优化与控制 · 数学 2019-05-22 T. Yung Kong , Homeira Pajoohesh , Gabor T. Herman

In this work, we study decentralized convex constrained optimization problems in networks. We focus on the dual averaging-based algorithmic framework that is well-documented to be superior in handling constraints and complex communication…

最优化与控制 · 数学 2022-08-16 Changxin Liu , Yang Shi , Huiping Li , Wenli Du

Sequence alignment algorithms are a basic and critical component of many bioinformatics fields. With rapid development of sequencing technology, the fast growing reference database volumes and longer length of query sequence become new…

分布式、并行与集群计算 · 计算机科学 2017-01-09 Bo Xu , Changlong Li , Hang Zhuang , Jiali Wang , Qingfeng Wang , Jinhong Zhou , Xuehai Zhou

Self-supervised learning (SSL) has recently shown notable success in various visual tasks. However, in terms of discriminability, SSL is still not on par with supervised learning (SL). This paper identifies a key issue, the ``crowding…

计算机视觉与模式识别 · 计算机科学 2025-08-05 Zeen Song , Wenwen Qiang , Changwen Zheng , Fuchun Sun , Hui Xiong

Speaker diarization based on bottom-up clustering of speech segments by acoustic similarity is often highly sensitive to the choice of hyperparameters, such as the initial number of clusters and feature weighting. Optimizing these…

计算与语言 · 计算机科学 2022-02-22 Andreas Stolcke

The generalized persistence diagram (GPD) is a natural extension of the classical persistence barcode to the setting of multi-parameter persistence and beyond. The GPD is defined as an integer-valued function whose domain is the set of…

代数拓扑 · 数学 2025-04-07 Mathieu Carrière , Seunghyun Kim , Woojin Kim