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We introduce a hybrid "Modified Genetic Algorithm-Multilevel Stochastic Gradient Descent" (MGA-MSGD) training algorithm that considerably improves accuracy and efficiency of solving 3D mechanical problems described, in strong-form, by PDEs…

数值分析 · 数学 2021-11-17 Hamidreza Dehghani , Andreas Zilian

A key challenge in federated learning (FL) is the statistical heterogeneity that impairs the generalization of the global model on each client. To address this, we propose a method Federated learning with Adaptive Local Aggregation (FedALA)…

机器学习 · 计算机科学 2023-09-19 Jianqing Zhang , Yang Hua , Hao Wang , Tao Song , Zhengui Xue , Ruhui Ma , Haibing Guan

In this paper, we discuss the convergence of an Algebraic MultiGrid (AMG) method for general symmetric positive-definite matrices. The method relies on an aggregation algorithm, named \emph{coarsening based on compatible weighted matching},…

数值分析 · 数学 2023-07-18 Pasqua D'Ambra , Fabio Durastante , Salvatore Filippone , Ludmil Zikatanov

Several useful variance-reduced stochastic gradient algorithms, such as SVRG, SAGA, Finito, and SAG, have been proposed to minimize empirical risks with linear convergence properties to the exact minimizer. The existing convergence results…

机器学习 · 计算机科学 2018-02-19 Bicheng Ying , Kun Yuan , Ali H. Sayed

We propose a novel framework to study asynchronous federated learning optimization with delays in gradient updates. Our theoretical framework extends the standard FedAvg aggregation scheme by introducing stochastic aggregation weights to…

机器学习 · 计算机科学 2022-06-22 Yann Fraboni , Richard Vidal , Laetitia Kameni , Marco Lorenzi

First-order optimization algorithms have been proven prominent in deep learning. In particular, algorithms such as RMSProp and Adam are extremely popular. However, recent works have pointed out the lack of ``long-term memory" in Adam-like…

机器学习 · 计算机科学 2020-12-01 Haiwen Huang , Chang Wang , Bin Dong

Multimodal medical analysis combining image and tabular data has gained increasing attention. However, effective fusion remains challenging due to cross-modal discrepancies in feature dimensions and modality contributions, as well as the…

计算机视觉与模式识别 · 计算机科学 2025-09-17 Congjing Yu , Jing Ye , Yang Liu , Xiaodong Zhang , Zhiyong Zhang

Visual-based perception is the key module for autonomous driving. Among those visual perception tasks, video object detection is a primary yet challenging one because of feature degradation caused by fast motion or multiple poses. Current…

计算机视觉与模式识别 · 计算机科学 2024-05-30 Yiming Cui , Cheng Han , Dongfang Liu

In the era of large-scale pre-trained models, effectively adapting general knowledge to specific affective computing tasks remains a challenge, particularly regarding computational efficiency and multimodal heterogeneity. While…

人工智能 · 计算机科学 2026-03-20 Yan Li , Yifei Xing , Xiangyuan Lan , Xin Li , Haifeng Chen , Dongmei Jiang

Forward gradient learning computes a noisy directional gradient and is a biologically plausible alternative to backprop for learning deep neural networks. However, the standard forward gradient algorithm, when applied naively, suffers from…

机器学习 · 计算机科学 2023-03-03 Mengye Ren , Simon Kornblith , Renjie Liao , Geoffrey Hinton

Federated Learning using the Federated Averaging algorithm has shown great advantages for large-scale applications that rely on collaborative learning, especially when the training data is either unbalanced or inaccessible due to privacy…

机器学习 · 计算机科学 2021-07-21 Jonatan Reyes , Lisa Di Jorio , Cecile Low-Kam , Marta Kersten-Oertel

Generative recommendation (GR) has emerged as a promising paradigm that replaces fragmented, scenario-specific architectures with unified Transformer-based models, exhibiting scaling-law behavior where recommendation quality improves…

分布式、并行与集群计算 · 计算机科学 2026-05-14 Huichao Chai , Zhixin Wu , Xuemiao Li , Shiqing Fan , Hengfeng Wang , Maojun Peng , Lu Xu , Yaoyuan Wang , Yibo Jin , Wei Guo , Yongxiang Feng

Federated Learning (FL) can be coordinated under the orchestration of a central server to collaboratively build a privacy-preserving model without the need for data exchange. However, participant data heterogeneity leads to local optima…

机器学习 · 计算机科学 2024-08-30 Boyuan Li , Zihao Peng , Yafei Li , Mingliang Xu , Shengbo Chen , Baofeng Ji , Cong Shen

Stochastic gradient-based descent (SGD), have long been central to training large language models (LLMs). However, their effectiveness is increasingly being questioned, particularly in large-scale applications where empirical evidence…

机器学习 · 计算机科学 2025-07-03 Di Zhang , Yihang Zhang

Recent years have witnessed an emerging paradigm shift toward embodied artificial intelligence, in which an agent must learn to solve challenging tasks by interacting with its environment. There are several challenges in solving embodied…

机器人学 · 计算机科学 2022-10-26 Zhiwei Jia , Kaixiang Lin , Yizhou Zhao , Qiaozi Gao , Govind Thattai , Gaurav Sukhatme

Deep learning malware detectors achieve high classification accuracy but suffer from severe interpretability limitations, typically returning probabilistic verdicts that lack forensic context. We introduce AsmRAG, a framework performing…

密码学与安全 · 计算机科学 2026-04-28 ElMouatez Billah Karbab

Selecting the most relevant or informative features is a key issue in actual machine learning problems. Since an exhaustive search is not feasible even for a moderate number of features, an intelligent search strategy must be employed for…

神经与进化计算 · 计算机科学 2026-04-08 Leandro Vignolo , Matias Gerard

The composition of training data mixtures is critical for effectively training large language models (LLMs), as it directly impacts their performance on downstream tasks. Our goal is to identify an optimal data mixture to specialize an LLM…

机器学习 · 计算机科学 2024-10-04 Simin Fan , David Grangier , Pierre Ablin

The paper proposes a new algorithm called SymBa that aims to achieve more biologically plausible learning than Back-Propagation (BP). The algorithm is based on the Forward-Forward (FF) algorithm, which is a BP-free method for training…

计算机视觉与模式识别 · 计算机科学 2023-03-16 Heung-Chang Lee , Jeonggeun Song

We introduce MADGRAD, a novel optimization method in the family of AdaGrad adaptive gradient methods. MADGRAD shows excellent performance on deep learning optimization problems from multiple fields, including classification and…

机器学习 · 计算机科学 2021-08-27 Aaron Defazio , Samy Jelassi