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Sparse matrix-vector multiplication (SpMV) operations are commonly used in various scientific applications. The performance of the SpMV operation often depends on exploiting regularity patterns in the matrix. Various representations have…

分布式、并行与集群计算 · 计算机科学 2019-07-25 Karan Aggarwal , Uday Bondhugula

In contrast to Part I of this treatise [1] that focuses on the optimization problems associated with single matrix variables, in this paper, we investigate the application of the matrix-monotonic optimization framework in the optimization…

信息论 · 计算机科学 2021-02-24 Chengwen Xing , Shuai Wang , Sheng Chen , Shaodan Ma , H. Vincent Poor , Lajos Hanzo

PACIFIER: Pacing Opinion Depolarization via a Unified Graph Learning Framework Opinion polarization moderation under the Friedkin-Johnsen (FJ) model is typically treated as an analytical optimization problem. Existing algorithms rely on…

社会与信息网络 · 计算机科学 2026-04-30 Mingkai Liao

Medical image segmentation often requires segmenting multiple elliptical objects on a single image. This includes, among other tasks, segmenting vessels such as the aorta in axial CTA slices. In this paper, we present a general approach to…

图像与视频处理 · 电气工程与系统科学 2022-06-22 Marin Benčević , Marija Habijan , Irena Galić , Danilo Babin

We consider near maximum-likelihood (ML) decoding of short linear block codes based on neural belief propagation (BP) decoding recently introduced by Nachmani et al.. While this method significantly outperforms conventional BP decoding, the…

The widespread adoption of machine learning algorithms necessitates hardware acceleration to ensure efficient performance. This acceleration relies on custom matrix engines that operate on full or reduced-precision floating-point…

硬件体系结构 · 计算机科学 2024-08-23 Kosmas Alexandridis , Christodoulos Peltekis , Dionysios Filippas , Giorgos Dimitrakopoulos

A novel SC decoding method of polar codes is proposed in $d$-deletion channels, where a new pruning strategy is designed to reduce decoding complexity. Considering the difference of the scenario weight distributions, pruning thresholds for…

信息论 · 计算机科学 2024-05-22 He Sun , Rongke Liu , Bin Dai

We propose a new method for low-rank approximation of Moore-Penrose pseudoinverses (MPPs) of large-scale matrices using tensor networks. The computed pseudoinverses can be useful for solving or preconditioning of large-scale overdetermined…

数值分析 · 数学 2016-07-06 Namgil Lee , Andrzej Cichocki

In this paper we address the problem of selecting factor-graph permutations of polar codes under belief propagation (BP) decoding to significantly improve the error-correction performance of the code. In particular, we formalize the…

信息论 · 计算机科学 2020-09-16 Nghia Doan , Seyyed Ali Hashemi , Warren Gross

Parameter Recombination (PR) methods aim to efficiently compose the weights of a neural network for applications like Parameter-Efficient FineTuning (PEFT) and Model Compression (MC), among others. Most methods typically focus on one…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Nazia Tasnim , Shrimai Prabhumoye , Bryan A. Plummer

Study of polar codes in fading channels is of great importance when applying polar codes in wireless communications. Channel estimation is a fundamental step for communication to be possible in fading channels. For both systematic and…

信息论 · 计算机科学 2018-01-10 Liping Li , Zuzheng Xu , Yanjun Hu

Proposing an effective and flexible matrix to represent a graph is a fundamental challenge that has been explored from multiple perspectives, e.g., filtering in Graph Fourier Transforms. In this work, we develop a novel and general…

机器学习 · 计算机科学 2023-05-11 Mingqi Yang , Wenjie Feng , Yanming Shen , Bryan Hooi

Sparse tensors are prevalent in real-world applications, often characterized by their large-scale, high-order, and high-dimensional nature. Directly handling raw tensors is impractical due to the significant memory and computational…

分布式、并行与集群计算 · 计算机科学 2024-05-24 Zixuan Li , Mingxing Duan , Huizhang Luo , Wangdong Yang , Kenli Li , Keqin Li

Token reduction accelerates Multimodal Large Language Models (MLLMs) by reducing excessive tokens, but overlooks structural redundancy differences, where critical and redundant modules process identical token loads. For fine-grained…

机器学习 · 计算机科学 2025-11-14 Aoming Liu , Reuben Tan , Boqing Gong , Bryan A. Plummer

Purpose: Magnetic polarizability tensors (MPTs) provide an economical characterisation of conducting magnetic metallic objects and their spectral signature can aid in the solution of metal detection inverse problems, such as scrap metal…

数值分析 · 数学 2024-05-01 James Elgy , Paul D. Ledger

We introduce an error resilient distributed computing method based on an extension of the channel polarization phenomenon to distributed algorithms. The method leverages an algorithmic split operation that transforms two identical compute…

信息论 · 计算机科学 2021-09-10 Mert Pilanci

In this letter, we propose a progressive rate-filling method as a framework to study agile construction of multilevel polar-coded modulation. We show that the bit indices within each component polar code can follow a fixed, precomputed…

信息论 · 计算机科学 2020-11-23 Jincheng Dai , Jinnan Piao , Kai Niu

Bit-interleaved coded modulation (BICM) and multilevel coded modulation (MLC) are commonly used to combine polar codes with high order modulation. While BICM benefits from simple design and the separation of coding and modulation, MLC shows…

信息论 · 计算机科学 2022-02-16 Hanwen Yao , Jinfeng Du , Alexander Vardy

Bilevel optimization has been widely used in decision-making process. However, there still lacks an efficient algorithm to determine an optimal solution of a bilevel optimization problem, especially for a large-size problem. To bridge the…

最优化与控制 · 数学 2016-05-18 Xuan Liu , Zuyi Li

Decomposition has become an increasingly popular technique for evolutionary multi-objective optimization (EMO). A decomposition-based EMO algorithm is usually designed to approximate a whole Pareto-optimal front (PF). However, in practice,…

神经与进化计算 · 计算机科学 2018-10-02 Ke Li , Renzhi Chen , Dragan Savic , Xin Yao