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As single-center computing approaches power constraints, decentralized training becomes essential. However, traditional Reinforcement Learning (RL) methods, crucial for enhancing large model post-training, cannot adapt to decentralized…

High update-to-data (UTD) ratio algorithms in reinforcement learning (RL) improve sample efficiency but incur high computational costs, limiting real-world scalability. We propose Offline Stabilization Phases for Efficient Q-Learning…

机器学习 · 计算机科学 2025-03-19 Carlo Romeo , Girolamo Macaluso , Alessandro Sestini , Andrew D. Bagdanov

In this paper, we study the randomized distributed coordinate descent algorithm with quantized updates. In the literature, the iteration complexity of the randomized distributed coordinate descent algorithm has been characterized under the…

机器学习 · 统计学 2017-01-23 Mostafa El Gamal , Lifeng Lai

LiDAR relocalization aims to estimate the global 6-DoF pose of a sensor in the environment. However, existing regression-based approaches are prone to dynamic or ambiguous scenarios, as they either solely rely on single-frame inference or…

计算机视觉与模式识别 · 计算机科学 2026-02-04 Minghang Zhu , Zhijing Wang , Yuxin Guo , Wen Li , Sheng Ao , Cheng Wang

This work studies the design problem of feedback stabilizers for discrete-time systems with input delays. A backstepping procedure is proposed for disturbance-free discrete-time systems. The feedback law designed by using backstepping…

最优化与控制 · 数学 2012-12-05 Iasson Karafyllis , Miroslav Krstic

Classic reinforcement learning (RL) frequently confronts challenges in tasks involving delays, which cause a mismatch between received observations and subsequent actions, thereby deviating from the Markov assumption. Existing methods…

机器学习 · 计算机科学 2024-06-06 Bo Xia , Yilun Kong , Yongzhe Chang , Bo Yuan , Zhiheng Li , Xueqian Wang , Bin Liang

Recently, the technique of local updates is a powerful tool in centralized settings to improve communication efficiency via periodical communication. For decentralized settings, it is still unclear how to efficiently combine local updates…

机器学习 · 统计学 2021-04-06 Xiang Li , Wenhao Yang , Shusen Wang , Zhihua Zhang

Maintaining a dynamic $k$-core decomposition is an important problem that identifies dense subgraphs in dynamically changing graphs. Recent work by Liu et al. [SPAA 2022] presents a parallel batch-dynamic algorithm for maintaining an…

分布式、并行与集群计算 · 计算机科学 2024-01-17 Quanquan C. Liu , Julian Shun , Igor Zablotchi

In this paper we present two strategies to enable "parallelization across the method" for spectral deferred corrections (SDC). Using standard low-order time-stepping methods in an iterative fashion, SDC can be seen as preconditioned Picard…

数值分析 · 数学 2017-03-24 Robert Speck

In this paper we propose a new scheduling algorithm called Real Time Scheduling (RTS) which uses virtual nodes for self stabilization. This algorithm deals with all the contributing components of the end-to-end travelling delay of data…

网络与互联网体系结构 · 计算机科学 2013-01-22 Deepali Virmani , Satbir Jain

Network updates such as policy and routing changes occur frequently in Software Defined Networks (SDN). Updates should be performed consistently, preventing temporary disruptions, and should require as little overhead as possible.…

网络与互联网体系结构 · 计算机科学 2018-07-05 Tal Mizrahi , Efi Saat , Yoram Moses

The existing ARQ schemes (including a hybrid ARQ) have a throughput depending on packet error probability. In this paper we describe a strategy for delay tolerant applications which provide a constant throughput until the algorithm…

信息论 · 计算机科学 2007-07-13 Alexander Zhdanov

This paper studies the performance of Non-persistent CSMA/CA protocols with K-Exponential Backoff scheduling algorithms. A multi-queue single-server system is proposed to model multiple access networks. The input buffer of each access node…

网络与互联网体系结构 · 计算机科学 2010-12-07 Pui King Wong , Dongjie Yin , Tony T. Lee

Geo-distributed systems often replicate data at multiple locations to achieve availability and performance despite network partitions. These systems must accept updates at any replica and propagate these updates asynchronously to every…

编程语言 · 计算机科学 2019-03-18 Constantin Enea , Suha Orhun Mutluergil , Gustavo Petri , Chao Wang

Resource reservation is a fundamental mechanism for ensuring quality of service in time-sensitive networks, which can be decentralized by using reservation protocols. In the Ethernet technology Time-Sensitive Networking, this has been…

网络与互联网体系结构 · 计算机科学 2023-11-09 Lisa Maile , Dominik Voitlein , Alexej Grigorjew , Kai-Steffen J. Hielscher , Reinhard German

We investigate a decentralised approach to committing transactions in a replicated database, under partial replication. Previous protocols either re-execute transactions entirely and/or compute a total order of transactions. In contrast,…

数据库 · 计算机科学 2009-09-29 Pierre Sutra , Marc Shapiro

Decentralized stochastic optimization methods have gained a lot of attention recently, mainly because of their cheap per iteration cost, data locality, and their communication-efficiency. In this paper we introduce a unified convergence…

机器学习 · 计算机科学 2021-03-03 Anastasia Koloskova , Nicolas Loizou , Sadra Boreiri , Martin Jaggi , Sebastian U. Stich

In this paper, a dynamic-hybrid automatic repeat request (D-HARQ) scheme with guaranteed delay performance is proposed. As opposed to the conventional HARQ that the maximum number of re-transmissions, L, is fixed, in the proposed scheme…

信息论 · 计算机科学 2019-11-06 Mahyar Shirvanimoghaddam , Hossein Khayami , Yonghui Li , Branka Vucetic

Communication overhead is one of the key challenges that hinders the scalability of distributed optimization algorithms. In this paper, we study local distributed SGD, where data is partitioned among computation nodes, and the computation…

机器学习 · 计算机科学 2020-05-15 Farzin Haddadpour , Mohammad Mahdi Kamani , Mehrdad Mahdavi , Viveck R. Cadambe

Data replication is crucial in modern distributed systems as a means to provide high availability. Many techniques have been proposed to utilize replicas to improve a system's performance, often requiring expensive coordination or…

数据库 · 计算机科学 2019-03-04 Yi Lu , Xiangyao Yu , Samuel Madden