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Greedy algorithm are in widespread use for sparse recovery because of its efficiency. But some evident flaws exists in most popular greedy algorithms, such as CoSaMP, which includes unreasonable demands on prior knowledge of target signal…

信息论 · 计算机科学 2009-08-18 Hao Zhang , Gang Li , Huadong Meng

We study gradient compression methods to alleviate the communication bottleneck in data-parallel distributed optimization. Despite the significant attention received, current compression schemes either do not scale well or fail to achieve…

机器学习 · 计算机科学 2020-02-19 Thijs Vogels , Sai Praneeth Karimireddy , Martin Jaggi

Low-rank regularization (LRR) has been widely applied in various machine learning tasks, but the associated optimization is challenging. Directly optimizing the rank function under constraints is NP-hard in general. To overcome this…

机器学习 · 计算机科学 2025-05-22 Naiqi Li , Yuqiu Xie , Peiyuan Liu , Tao Dai , Yong Jiang , Shu-Tao Xia

Inverse reinforcement learning (IRL) aims to recover the reward function and the associated optimal policy that best fits observed sequences of states and actions implemented by an expert. Many algorithms for IRL have an inherently nested…

机器学习 · 计算机科学 2022-11-02 Siliang Zeng , Chenliang Li , Alfredo Garcia , Mingyi Hong

We study the problem of estimating a rank one signal matrix from an observed matrix generated by corrupting the signal with additive rotationally invariant noise. We develop a new class of approximate message-passing algorithms for this…

统计理论 · 数学 2025-09-09 Rishabh Dudeja , Songbin Liu , Junjie Ma

Routing of the nets in Field Programmable Gate Array (FPGA) design flow is one of the most time consuming steps. Although Versatile Place and Route (VPR), which is a commonly used algorithm for this purpose, routes effectively, it is slow…

分布式、并行与集群计算 · 计算机科学 2020-10-23 Rohit Agrawal , Kapil Ahuja , Dhaarna Maheshwari , Akash Kumar

Phase retrieval has been mainly considered in the presence of Gaussian noise. However, the performance of the algorithms proposed under the Gaussian noise model severely degrades when grossly corrupted data, i.e., outliers, exist. This…

信息论 · 计算机科学 2017-11-22 Cheng Qian , Xiao Fu , Nicholas D. Sidiropoulos , Lei Huang , Junhao Xie

In this paper, we describe the randomized QLP (RQLP) algorithm and its enhanced version (ERQLP) for computing the low rank approximation to $A$ of size $m\times n$ efficiently such that $A\approx QLP$, where $L$ is the rank-$k$…

数值分析 · 数学 2018-11-26 Nianci Wu , Hua Xiang

Recent studies in reinforcement learning (RL) have made significant progress by leveraging function approximation to alleviate the sample complexity hurdle for better performance. Despite the success, existing provably efficient algorithms…

机器学习 · 计算机科学 2023-11-07 Nikki Lijing Kuang , Ming Yin , Mengdi Wang , Yu-Xiang Wang , Yi-An Ma

Lazy search algorithms have been developed to efficiently solve planning problems in domains where the computational effort is dominated by the cost of edge evaluation. The existing algorithms operate by intelligently balancing…

机器人学 · 计算机科学 2023-01-16 Shohin Mukherjee , Sandip Aine , Maxim Likhachev

The problem of recovering a low-rank matrix from the linear constraints, known as affine matrix rank minimization problem, has been attracting extensive attention in recent years. In general, affine matrix rank minimization problem is a…

最优化与控制 · 数学 2020-01-31 Angang Cui , Jigen Peng , Haiyang Li

Non-negative signals form an important class of sparse signals. Many algorithms have already beenproposed to recover such non-negative representations, where greedy and convex relaxed algorithms are among the most popular methods. One fast…

信号处理 · 电气工程与系统科学 2020-06-09 Konstantinos Voulgaris , Mike E. Davies , Mehrdad Yaghoobi

This paper proposes a fractional-order reset element whose architecture allows for the suppression of nonlinear effects for a range of frequencies. Suppressing the nonlinear effects of a reset element for the desired frequency range while…

系统与控制 · 电气工程与系统科学 2021-03-04 Nima Karbasizadeh , Niranjan Saikumar , S. Hassan HosseinNia

This paper introduces an innovative method for reducing the computational complexity of deep neural networks in real-time speech enhancement on resource-constrained devices. The proposed approach utilizes a two-stage processing framework,…

音频与语音处理 · 电气工程与系统科学 2024-06-10 Shrishti Saha Shetu , Soumitro Chakrabarty , Oliver Thiergart , Edwin Mabande

This paper addresses the challenging problem of parameter estimation in bilinear systems under colored noise. A novel approach, termed B-PF-RLS, is proposed, combining a particle filter (PF) with a recursive least squares (RLS) estimator.…

系统与控制 · 电气工程与系统科学 2025-05-20 Khalid Abd El Mageed Hag Elamin

Robustness evaluation against adversarial examples has become increasingly important to unveil the trustworthiness of the prevailing deep models in natural language processing (NLP). However, in contrast to the computer vision domain where…

计算与语言 · 计算机科学 2022-12-20 Bairu Hou , Jinghan Jia , Yihua Zhang , Guanhua Zhang , Yang Zhang , Sijia Liu , Shiyu Chang

Recently we have shown a system developed to precisely control the laser pulse timing of excimer lasers [1]. The electronic circuit based on an embedded microcontroller and utilized the natural jitter noise of the laser pulse generation to…

仪器与探测器 · 物理学 2014-03-17 Robert Mingesz , Angela Barna , Zoltan Gingl , Janos Mellar

Image restoration is typically addressed through non-convex inverse problems, which are often solved using first-order block-wise splitting methods. In this paper, we consider a general type of non-convex optimisation model that captures…

Preference-based Reinforcement Learning (PbRL) circumvents the need for reward engineering by harnessing human preferences as the reward signal. However, current PbRL methods excessively depend on high-quality feedback from domain experts,…

机器学习 · 计算机科学 2024-10-29 Jie Cheng , Gang Xiong , Xingyuan Dai , Qinghai Miao , Yisheng Lv , Fei-Yue Wang

This paper considers the problem of reconstructing sparse or compressible signals from one-bit quantized measurements. We study a new method that uses a log-sum penalty function, also referred to as the Gaussian entropy, for sparse signal…

信息论 · 计算机科学 2012-10-17 Jun Fang , Yanning Shen , Hongbin Li