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A basic model in sequential decision making is the Markov decision process (MDP), which is extended to Robust MDPs (RMDPs) by allowing uncertainty in transition probabilities and optimizing against the worst-case transition probabilities…

计算复杂性 · 计算机科学 2026-05-11 Ali Asadi , Krishnendu Chatterjee , Alipasha Montaseri , Ali Shafiee

Motivated by recent distributed systems technology, Aguilera et al. introduced a hybrid model of distributed computing, called message-and-memory model or m&m model for short [1]. In this model, processes can communicate by message passing…

分布式、并行与集群计算 · 计算机科学 2020-12-15 Vassos Hadzilacos , Xing Hu , Sam Toueg

We study the fundamental problem of \emph{moduli selection} in the Robust Chinese Remainder Theorem (RCRT), where each residue may be perturbed by a bounded error. Consider $L$ moduli of the form $m_i = \Gamma_i m$ ($1 \le i \le L$), where…

信号处理 · 电气工程与系统科学 2025-12-01 Wenyi Yan , Lu Gan , Hongqing Liu , Shaoqing Hu

This paper presents fast, distributed, $O(1)$-approximation algorithms for metric facility location problems with outliers in the Congested Clique model, Massively Parallel Computation (MPC) model, and in the $k$-machine model. The paper…

分布式、并行与集群计算 · 计算机科学 2018-11-16 Tanmay Inamdar , Shreyas Pai , Sriram V. Pemmaraju

In an anonymous shared memory system, all inter-process communications are via shared objects; however, unlike in standard systems, there is no a priori agreement between processes on the names of shared objects [14,15]. Furthermore, the…

分布式、并行与集群计算 · 计算机科学 2023-09-21 Gadi Taubenfeld

Robust optimization (RO) is a powerful paradigm for decision making under uncertainty. Existing algorithms for solving RO, including the reformulation approach and the cutting-plane method, do not scale well, hindering the application of RO…

最优化与控制 · 数学 2024-04-09 Kai Tu , Zhi Chen , Man-Chung Yue

This paper studies the parameters for which Reed-Muller (RM) codes over $GF(2)$ can correct random erasures and random errors with high probability, and in particular when can they achieve capacity for these two classical channels.…

信息论 · 计算机科学 2014-11-18 Emmanuel Abbe , Amir Shpilka , Avi Wigderson

Language Reasoning Models (LRMs) achieve strong performance by scaling test-time computation but often suffer from ``overthinking'', producing excessively long reasoning traces that increase latency and memory usage. Existing LRMs typically…

In this paper, we introduce two algorithms that solve the mutual exclusion problem for concurrent processes that communicate through shared variables, [2]. Our algorithms guarantee that any process trying to enter the critical section,…

分布式、并行与集群计算 · 计算机科学 2019-03-26 Jordi Bataller Mascarell

We derive a lower bound on the amount of information accessed to repair failed nodes within a single rack from any number of helper racks in the rack-aware storage model that allows collective information processing in the nodes that share…

信息论 · 计算机科学 2023-04-19 Jiaojiao Wang , Zitan Chen

Solving chance-constrained optimal control problems for systems subject to non-stationary uncertainties is a significant challenge.Conventional robust model predictive control (MPC) often yields excessive conservatism by relying on static…

系统与控制 · 电气工程与系统科学 2025-07-16 Mingcong Li

We prove a lower bound of Omega(log n/loglog n) for the remote memory reference (RMR) complexity of abortable test-and-set (leader election) in the cache-coherent (CC) and the distributed shared memory (DSM) model. This separates the…

分布式、并行与集群计算 · 计算机科学 2018-05-15 Aryaz Eghbali , Philipp Woelfel

We consider geometric collision-detection problems for modular reconfigurable robots. Assuming the nodes (modules) are connected squares on a grid, we investigate the complexity of deciding whether collisions may occur, or can be avoided,…

计算几何 · 计算机科学 2023-05-03 Siddharth Gupta , Marc van Kreveld , Othon Michail , Andreas Padalkin

Emerging applications of control, estimation, and machine learning, ranging from target tracking to decentralized model fitting, pose resource constraints that limit which of the available sensors, actuators, or data can be simultaneously…

最优化与控制 · 数学 2020-12-15 Vasileios Tzoumas , Ali Jadbabaie , George J. Pappas

In this work, we present a constant-round algorithm for the $2$-ruling set problem in the Congested Clique model. As a direct consequence, we obtain a constant round algorithm in the MPC model with linear space-per-machine and optimal total…

数据结构与算法 · 计算机科学 2023-10-11 Mélanie Cambus , Fabian Kuhn , Shreyas Pai , Jara Uitto

We present a massively parallel algorithm, with near-linear memory per machine, that computes a $(2+\varepsilon)$-approximation of minimum-weight vertex cover in $O(\log\log d)$ rounds, where $d$ is the average degree of the input graph.…

数据结构与算法 · 计算机科学 2020-05-22 Mohsen Ghaffari , Ce Jin , Daan Nilis

We present a rank metric code-based encryption scheme with key and ciphertext sizes comparable to that of isogeny-based cryptography for an equivalent security level. The system also benefits from efficient encryption and decryption…

密码学与安全 · 计算机科学 2019-12-02 Julien Lavauzelle , Pierre Loidreau , Ba-Duc Pham

Restricted kernel machines (RKMs) have demonstrated a significant impact in enhancing generalization ability in the field of machine learning. Recent studies have introduced various methods within the RKM framework, combining kernel…

机器学习 · 计算机科学 2025-02-18 A. Quadir , M. Sajid , M. Tanveer

Max Restricted Path Consistency (maxRPC) is a local consistency for binary constraints that can achieve considerably stronger pruning than arc consistency. However, existing maxRRC algorithms suffer from overheads and redundancies as they…

人工智能 · 计算机科学 2010-09-01 Thanasis Balafoutis , Anastasia Paparrizou , Kostas Stergiou , Toby Walsh

Massive multiple-input multiple-output (M-MIMO) technique brings better energy efficiency and coverage but higher computational complexity than small-scale MIMO. For linear detections such as minimum mean square error (MMSE), prohibitive…

信号处理 · 电气工程与系统科学 2018-02-19 Chuan Zhang , Yufeng Yang , Shunqing Zhang , Zaichen Zhang , Xiaohu You