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Graph based clustering is one of the major clustering methods. Most of it work in three separate steps: similarity graph construction, clustering label relaxing and label discretization with k-means. Such common practice has three…

机器学习 · 计算机科学 2019-04-26 Yudong Han , Lei Zhu , Zhiyong Cheng , Jingjing Li , Xiaobai Liu

This paper proposes the Doubly Compressed Momentum-assisted stochastic gradient tracking algorithm $\texttt{DoCoM}$ for communication-efficient decentralized optimization. The algorithm features two main ingredients to achieve a…

机器学习 · 计算机科学 2023-08-01 Chung-Yiu Yau , Hoi-To Wai

Column Generation (CG) is an iterative algorithm for solving linear programs (LPs) with an extremely large number of variables (columns). CG is the workhorse for tackling large-scale \textit{integer} linear programs, which rely on CG to…

最优化与控制 · 数学 2023-01-16 Cheng Chi , Amine Mohamed Aboussalah , Elias B. Khalil , Juyoung Wang , Zoha Sherkat-Masoumi

Column generation is often used to solve multi-commodity flow problems. A program for column generation always includes a module that solves a linear equation. In this paper, we address three major issues in solving linear problem during…

最优化与控制 · 数学 2019-03-19 Liyun Dai , Hengjun Zhao , Zhiming Liu

Distributionally robust optimization (DRO) can improve the robustness and fairness of learning methods. In this paper, we devise stochastic algorithms for a class of DRO problems including group DRO, subpopulation fairness, and empirical…

机器学习 · 计算机科学 2025-02-03 Tasuku Soma , Khashayar Gatmiry , Sharut Gupta , Stefanie Jegelka

In this paper, we focus on Dynamic Execution techniques that optimize the computation flow based on input. This aims to identify simpler problems that can be solved using fewer resources, similar to human cognition. The techniques discussed…

机器学习 · 计算机科学 2024-11-05 Haim Barad , Jascha Achterberg , Tien Pei Chou , Jean Yu

The proportional fair resource allocation problem is a major problem studied in flow control of networks, operations research, and economic theory, where it has found numerous applications. This problem, defined as the constrained…

最优化与控制 · 数学 2022-11-29 Francisco Criado , David Martínez-Rubio , Sebastian Pokutta

Adapting large-scale foundation flow and diffusion generative models to optimize task-specific objectives while preserving prior information is crucial for real-world applications such as molecular design, protein docking, and creative…

机器学习 · 计算机科学 2025-12-01 Riccardo De Santi , Marin Vlastelica , Ya-Ping Hsieh , Zebang Shen , Niao He , Andreas Krause

Deep neural networks enable real-time monitoring of in-vehicle drivers, facilitating the timely prediction of distractions, fatigue, and potential hazards. This technology is now integral to intelligent transportation systems. Recent…

计算机视觉与模式识别 · 计算机科学 2025-01-06 Cong Duan , Zixuan Liu , Jiahao Xia , Minghai Zhang , Jiacai Liao , Libo Cao

The construction of robust solvers for linear systems obtained from the discretization of partial differential equations using Isogeometric Analysis is challenging since the condition number of the system matrix not only grows with the…

数值分析 · 数学 2025-12-24 Monica Montardini , Stefan Takacs , Mattia Tani

Conventional class-guided diffusion models generally succeed in generating images with correct semantic content, but often struggle with texture details. This limitation stems from the usage of class priors, which only provide coarse and…

计算机视觉与模式识别 · 计算机科学 2024-10-14 Xiaoyu Yue , Zidong Wang , Zeyu Lu , Shuyang Sun , Meng Wei , Wanli Ouyang , Lei Bai , Luping Zhou

In this paper, we propose $FastDoc$ (Fast Continual Pre-training Technique using Document Level Metadata and Taxonomy), a novel, compute-efficient framework that utilizes Document metadata and Domain-Specific Taxonomy as supervision signals…

计算与语言 · 计算机科学 2024-11-04 Abhilash Nandy , Manav Nitin Kapadnis , Sohan Patnaik , Yash Parag Butala , Pawan Goyal , Niloy Ganguly

Decision trees are highly interpretable models for solving classification problems in machine learning (ML). The standard ML algorithms for training decision trees are fast but generate suboptimal trees in terms of accuracy. Other discrete…

机器学习 · 计算机科学 2024-01-24 Krunal Kishor Patel , Guy Desaulniers , Andrea Lodi

We propose a randomized method for solving linear programs with a large number of columns but a relatively small number of constraints. Since enumerating all the columns is usually unrealistic, such linear programs are commonly solved by…

最优化与控制 · 数学 2023-11-29 Yi-Chun Akchen , Velibor V. Mišić

Document expansion (DE) via query generation tackles vocabulary mismatch in sparse retrieval, yet faces limitations: uncontrolled generation producing hallucinated or redundant queries with low diversity; poor generalization from in-domain…

信息检索 · 计算机科学 2025-10-14 Tzu-Lin Kuo , Wei-Ning Chiu , Wei-Yun Ma , Pu-Jen Cheng

The so-called fast inertial relaxation engine is a first-order method for unconstrained smooth optimization problems. It updates the search direction by a linear combination of the past search direction, the current gradient and the…

最优化与控制 · 数学 2019-05-17 Yifei Wang , Zeyu Jia , Zaiwen Wen

In this work, we present direction-of-arrival (DoA) estimation algorithms based on the Krylov subspace that effectively exploit prior knowledge of the signals that impinge on a sensor array. The proposed multi-step knowledge-aided iterative…

信号处理 · 电气工程与系统科学 2018-12-19 S. Pinto , R. C. de Lamare

Data imputation has been extensively explored to solve the missing data problem. The dramatically increasing volume of incomplete data makes the imputation models computationally infeasible in many real-life applications. In this paper, we…

机器学习 · 计算机科学 2022-01-11 Yangyang Wu , Jun Wang , Xiaoye Miao , Wenjia Wang , Jianwei Yin

Diffusion probabilistic models (DPMs) have shown remarkable performance in visual synthesis but are computationally expensive due to the need for multiple evaluations during the sampling. Recent predictor-corrector diffusion samplers have…

计算机视觉与模式识别 · 计算机科学 2024-09-06 Wenliang Zhao , Haolin Wang , Jie Zhou , Jiwen Lu

Generative retrieval (GR) reformulates the Information Retrieval (IR) task as the generation of document identifiers (docIDs). Despite its promise, existing GR models exhibit poor generalization to newly added documents, often failing to…

信息检索 · 计算机科学 2026-05-12 Zhen Zhang , Zihan Wang , Xinyu Ma , Shuaiqiang Wang , Dawei Yin , Xin Xin , Pengjie Ren , Maarten de Rijke , Zhaochun Ren