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For finite coupling lengths, terminated spatially coupled low-density parity-check (SC-LDPC) codes show a non-negligible rate-loss. In this paper, we investigate if this rate loss can be mitigated by tail-biting SC-LDPC codes in conjunction…

信息论 · 计算机科学 2017-04-19 Sebastian Cammerer , Laurent Schmalen , Vahid Aref , Stephan ten Brink

Unsupervised fine-grained image hashing aims to learn compact binary codes that preserve subtle visual differences among highly similar instances without manual annotations. However, most existing methods neglect collision resistance,…

计算机视觉与模式识别 · 计算机科学 2026-05-19 Anh-Kiet Duong , Petra Gomez-Krämer , Jean-Michel Carozza

Complete complementary codes (CCCs) are highly valuable in the fields of information security, radar and communication. The spectrally null constrained (SNC) problem arises in radar and modern communication systems due to the reservation or…

信息论 · 计算机科学 2025-08-27 Rajen Kumar , Palash Sarkar , Prashant Kumar Srivastava , Sudhan Majhi

Cross-correlating the data of neutral hydrogen (HI) 21cm intensity mapping with galaxy surveys is an effective method to extract astrophysical and cosmological information. In this work, we investigate the cross-correlation of MeerKAT…

宇宙学与河外天体物理 · 物理学 2023-06-28 Yuer Jiang , Yan Gong , Meng Zhang , Qi Xiong , Xingchen Zhou , Furen Deng , Xuelei Chen , Yin-Zhe Ma , Bin Yue

Conformal Prediction (CP) is a distribution-free framework for constructing statistically rigorous prediction sets. While popular variants such as CD-split improve CP's efficiency, they often yield prediction sets composed of multiple…

机器学习 · 统计学 2025-09-29 Mingyi Zheng , Hongyu Jiang , Yizhou Lu , Jiaye Teng

Based on a newly proposed spatial data model - spatial chromatic model (SCM), we developed a spatial coding scheme, called full-coded ordinary arranged chromatic diagram (full-OACD). Full-OACD is a type of spatial tessellation, where space…

计算几何 · 计算机科学 2016-01-18 Weining Zhu

We introduce a novel framework for clustering a collection of tall matrices based on their column spaces, a problem we term Subspace Clustering of Subspaces (SCoS). Unlike traditional subspace clustering methods that assume vectorized data,…

机器学习 · 计算机科学 2025-09-30 Paris A. Karakasis , Nicholas D. Sidiropoulos

Cohesive subgraph discovery in a network is one of the fundamental problems and investigated for several decades. In this paper, we propose the Overlapping Cohesive Subgraphs with Minimum degree (OCSM) problem which combines three key…

社会与信息网络 · 计算机科学 2022-06-13 Junghoon Kim , Sungsu Lim , Jungeun Kim

Sparse superposition (SS) codes were originally proposed as a capacity-achieving communication scheme over the additive white Gaussian noise channel (AWGNC) [1]. Very recently, it was discovered that these codes are universal, in the sense…

信息论 · 计算机科学 2020-06-05 Erdem Biyik , Jean Barbier , Mohamad Dia

The problem of computing a linear combination of sources over a multiple access channel is studied. Inner and outer bounds on the optimal tradeoff between the communication rates are established when encoding is restricted to random…

信息论 · 计算机科学 2018-10-30 Pinar Sen , Sung Hoon Lim , Young-Han Kim

Hermitian hulls of linear codes are interesting for theoretical and practical reasons alike. In terms of recent application, linear codes whose hulls meet certain conditions have been utilized as ingredients to construct…

信息论 · 计算机科学 2024-04-09 Gaojun Luo , Lin Sok , Martianus Frederic Ezerman , San Ling

Distributed arithmetic coding (DAC) has been shown to be effective for Slepian-Wolf coding, especially for short data blocks. In this letter, we propose to use the DAC to compress momery-correlated sources. More specifically, the…

信息论 · 计算机科学 2021-01-08 Yong Fang , Jechang Jeong

Image hashing provides compact representations for efficient storage and retrieval but is inherently limited to global comparison and cannot reason about where changes occur. This limitation prevents hashing from being directly applicable…

计算机视觉与模式识别 · 计算机科学 2026-05-13 Anh-Kiet Duong , Marie-Claire Iatrides , Petra Gomez-Krämer , Jean-Michel Carozza

This work is concerned with approximating constraint satisfaction problems (CSPs) with an additional global cardinality constraints. For example, \maxcut is a boolean CSP where the input is a graph $G = (V,E)$ and the goal is to find a cut…

数据结构与算法 · 计算机科学 2011-10-06 Prasad Raghavendra , Ning Tan

We study function computation over a Gaussian multiple-access channel (MAC), where multiple transmitters aim at computing a function of their values at a common receiver. To this end, we propose a novel coded-modulation framework for…

信息论 · 计算机科学 2026-01-21 Saeed Razavikia , Mohammad Kazemi , Deniz Gündüz , Carlo Fischione

Sparse coding aims to model data vectors as sparse linear combinations of basis elements, but a majority of related studies are restricted to continuous data without spatial or temporal structure. A new model-based sparse coding (MSC)…

统计方法学 · 统计学 2021-08-24 Xin Xing , Rui Xie , Wenxuan Zhong

Function-correcting codes are designed to reduce redundancy of codes when protecting function values of information against errors. As generalizations of Hamming weights and Lee weights over $ \mathbb{Z}_{4} $, homogeneous weights are used…

信息论 · 计算机科学 2025-07-08 Huiying Liu , Hongwei Liu

We introduce a notion of code sparsification that generalizes the notion of cut sparsification in graphs. For a (linear) code $\mathcal{C} \subseteq \mathbb{F}_q^n$ of dimension $k$ a $(1 \pm \epsilon)$-sparsification of size $s$ is given…

数据结构与算法 · 计算机科学 2023-11-03 Sanjeev Khanna , Aaron L Putterman , Madhu Sudan

Recently, it has been observed that terminated low-density-parity-check (LDPC) convolutional codes (or spatially-coupled codes) appear to approach capacity universally across the class of binary memoryless channels. This is facilitated by…

信息论 · 计算机科学 2011-10-12 Phong S. Nguyen , Arvind Yedla , Henry D. Pfister , Krishna R. Narayanan

Hyperspectral images with high spectral resolution provide new insights into recognizing subtle differences in similar substances. However, object detection in hyperspectral images faces significant challenges in intra- and inter-class…

计算机视觉与模式识别 · 计算机科学 2025-12-23 Xiao He , Chang Tang , Xinwang Liu , Wei Zhang , Zhimin Gao , Chuankun Li , Shaohua Qiu , Jiangfeng Xu