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We propose a symmetric graph convolutional autoencoder which produces a low-dimensional latent representation from a graph. In contrast to the existing graph autoencoders with asymmetric decoder parts, the proposed autoencoder has a newly…

机器学习 · 计算机科学 2019-08-08 Jiwoong Park , Minsik Lee , Hyung Jin Chang , Kyuewang Lee , Jin Young Choi

In this paper, we analyze the finite-length performance of codes on graphs constructed by connecting spatially coupled low-density parity-check (SC-LDPC) code chains. Successive (peeling) decoding is considered for the binary erasure…

信息论 · 计算机科学 2014-03-03 Pablo M. Olmos , David G. M. Mitchell , Dmitri Truhachev , Daniel J. Costello

In this paper, we deploy the self-attention mechanism to achieve improved channel estimation for orthogonal frequency-division multiplexing waveforms in the downlink. Specifically, we propose a new hybrid encoder-decoder structure (called…

信号处理 · 电气工程与系统科学 2022-04-29 Dianxin Luan , John Thompson

We introduce a novel masked graph autoencoder (MGAE) framework to perform effective learning on graph structure data. Taking insights from self-supervised learning, we randomly mask a large proportion of edges and try to reconstruct these…

机器学习 · 计算机科学 2022-01-10 Qiaoyu Tan , Ninghao Liu , Xiao Huang , Rui Chen , Soo-Hyun Choi , Xia Hu

The classical sparse coding (SC) model represents visual stimuli as a linear combination of a handful of learned basis functions that are Gabor-like when trained on natural image data. However, the Gabor-like filters learned by classical…

神经元与认知 · 定量生物学 2024-02-19 Jonathan Huml , Abiy Tasissa , Demba Ba

Graph Edit Distance (GED) is a fundamental, albeit NP-hard, metric for structural graph similarity. Recent neural graph matching architectures approximate GED by first encoding graphs with a Graph Neural Network (GNN) and then applying…

机器学习 · 计算机科学 2026-05-08 Jyotirmaya Shivottam , Subhankar Mishra

Pavement crack detection has long depended on costly and time-intensive pixel-level annotations, which limit its scalability for large-scale infrastructure monitoring. To overcome this barrier, this paper examines the feasibility of…

计算机视觉与模式识别 · 计算机科学 2025-10-24 Blessing Agyei Kyem , Joshua Kofi Asamoah , Eugene Denteh , Andrews Danyo , Armstrong Aboah

Speculative decoding (SD) is a widely adopted approach for accelerating inference in large language models (LLMs), particularly when the draft and target models are well aligned. However, state-of-the-art SD methods typically rely on…

计算与语言 · 计算机科学 2026-02-12 Wei Zhong , Manasa Bharadwaj , Yixiao Wang , Yipeng Ji , Chul Lee

While representation learning has yielded a great success on many graph learning tasks, there is little understanding behind the structures that are being captured by these embeddings. For example, we wonder if the topological features,…

机器学习 · 计算机科学 2021-10-11 Maroun Haddad , Mohamed Bouguessa

We propose a new technique, Singular Vector Canonical Correlation Analysis (SVCCA), a tool for quickly comparing two representations in a way that is both invariant to affine transform (allowing comparison between different layers and…

机器学习 · 统计学 2017-11-09 Maithra Raghu , Justin Gilmer , Jason Yosinski , Jascha Sohl-Dickstein

Temporal graph neural networks have shown promising results in learning inductive representations by automatically extracting temporal patterns. However, previous works often rely on complex memory modules or inefficient random walk methods…

机器学习 · 计算机科学 2024-01-10 Mohammad Ali Alomrani , Mahdi Biparva , Yingxue Zhang , Mark Coates

Self-supervised learning (SSL) approaches have recently shown substantial success in learning visual representations from unannotated images. Compared with photographic images, medical images acquired with the same imaging protocol exhibit…

计算机视觉与模式识别 · 计算机科学 2024-06-12 Ziyu Zhou , Haozhe Luo , Jiaxuan Pang , Xiaowei Ding , Michael Gotway , Jianming Liang

We investigate how Accumulated Local Effects (ALE), a model-agnostic explanation method, can be adapted to visualize the influence of node feature values in link prediction tasks using Graph Neural Networks (GNNs), specifically Graph…

社会与信息网络 · 计算机科学 2025-12-04 Paulina Kaczyńska , Julian Sienkiewicz , Dominik Ślęzak

We present collaborative similarity embedding (CSE), a unified framework that exploits comprehensive collaborative relations available in a user-item bipartite graph for representation learning and recommendation. In the proposed framework,…

信息检索 · 计算机科学 2019-02-20 Chih-Ming Chen , Chuan-Ju Wang , Ming-Feng Tsai , Yi-Hsuan Yang

Graph machine learning (GML) has made great progress in node classification, link prediction, graph classification and so on. However, graphs in reality are often structurally imbalanced, that is, only a few hub nodes have a denser local…

机器学习 · 计算机科学 2023-03-27 Zulong Liu , Kejia-Chen , Zheng Liu

Generative models of graphs are well-known, but many existing models are limited in scalability and expressivity. We present a novel sequential graphical variational autoencoder operating directly on graphical representations of data. In…

机器学习 · 计算机科学 2019-12-18 Bowen Jing , Ethan A. Chi , Jillian Tang

We propose the Graph Space Embedding (GSE), a technique that maps the input into a space where interactions are implicitly encoded, with little computations required. We provide theoretical results on an optimal regime for the GSE, namely a…

机器学习 · 计算机科学 2019-08-01 João Pereira , Albert Groen , Erik Stroes , Evgeni Levin

Accurate predictions rely on the expressiveness power of graph deep learning frameworks like graph neural networks and graph transformers, where a positional encoding mechanism has become much more indispensable in recent state-of-the-art…

机器学习 · 计算机科学 2025-06-12 Katherine Tieu , Dongqi Fu , Zihao Li , Ross Maciejewski , Jingrui He

Graph contrastive learning (GCL) aligns node representations by classifying node pairs into positives and negatives using a selection process that typically relies on establishing correspondences within two augmented graphs. The…

机器学习 · 计算机科学 2024-11-27 Maysam Behmanesh , Maks Ovsjanikov

The rapid growth of Internet services and mobile devices provides an excellent opportunity to satisfy the strong demand for the personalized item or product recommendation. However, with the tremendous increase of users and items,…

信息检索 · 计算机科学 2018-12-10 Chen Ma , Peng Kang , Bin Wu , Qinglong Wang , Xue Liu
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