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Heterogeneous graphs (HGs) also known as heterogeneous information networks have become ubiquitous in real-world scenarios; therefore, HG embedding, which aims to learn representations in a lower-dimension space while preserving the…

社会与信息网络 · 计算机科学 2020-12-02 Xiao Wang , Deyu Bo , Chuan Shi , Shaohua Fan , Yanfang Ye , Philip S. Yu

Graph convolutional networks (GCNs) allow us to learn topologically-aware node embeddings, which can be useful for classification or link prediction. However, they are unable to capture long-range dependencies between nodes without adding…

机器学习 · 计算机科学 2023-08-17 Reza Namazi , Elahe Ghalebi , Sinead Williamson , Hamidreza Mahyar

User generated 3D shapes in online repositories contain rich information about surfaces, primitives, and their geometric relations, often arranged in a hierarchy. We present a framework for learning representations of 3D shapes that reflect…

计算机视觉与模式识别 · 计算机科学 2019-10-04 Gopal Sharma , Evangelos Kalogerakis , Subhransu Maji

In this paper, we focus on graph representation learning of heterogeneous information network (HIN), in which various types of vertices are connected by various types of relations. Most of the existing methods conducted on HIN revise…

机器学习 · 计算机科学 2019-12-24 Huiting Hong , Hantao Guo , Yucheng Lin , Xiaoqing Yang , Zang Li , Jieping Ye

Contextual embeddings represent a new generation of semantic representations learned from Neural Language Modelling (NLM) that addresses the issue of meaning conflation hampering traditional word embeddings. In this work, we show that…

计算与语言 · 计算机科学 2019-06-25 Daniel Loureiro , Alipio Jorge

Low-dimensional embeddings are a cornerstone in the modelling and analysis of complex networks. However, most existing approaches for mining network embedding spaces rely on computationally intensive machine learning systems to facilitate…

社会与信息网络 · 计算机科学 2024-10-04 Alexandros Xenos , Noel-Malod Dognin , Natasa Przulj

Deep reinforcement learning (RL) algorithms have achieved great success on a wide variety of sequential decision-making tasks. However, many of these algorithms suffer from high sample complexity when learning from scratch using…

机器学习 · 统计学 2020-06-15 Michael Wan , Tanmay Gangwani , Jian Peng

Network embedding is an effective method to learn low-dimensional representations of nodes, which can be applied to various real-life applications such as visualization, node classification, and link prediction. Although significant…

机器学习 · 计算机科学 2020-03-31 Shixun Huang , Zhifeng Bao , Guoliang Li , Yanghao Zhou , J. Shane Culpepper

In real-world scenarios, texts in a graph are often linked by multiple semantic relations (e.g., papers in an academic graph are referenced by other publications, written by the same author, or published in the same venue), where text…

计算与语言 · 计算机科学 2024-07-16 Bowen Jin , Wentao Zhang , Yu Zhang , Yu Meng , Han Zhao , Jiawei Han

In traditional Distributional Semantic Models (DSMs) the multiple senses of a polysemous word are conflated into a single vector space representation. In this work, we propose a DSM that learns multiple distributional representations of a…

计算与语言 · 计算机科学 2019-04-12 Eleftheria Briakou , Nikos Athanasiou , Alexandros Potamianos

We present Walklets, a novel approach for learning multiscale representations of vertices in a network. In contrast to previous works, these representations explicitly encode multiscale vertex relationships in a way that is analytically…

社会与信息网络 · 计算机科学 2017-06-27 Bryan Perozzi , Vivek Kulkarni , Haochen Chen , Steven Skiena

Hyperbolic geometry has emerged as an effective latent space for representing complex networks, owing to its ability to capture hierarchical organization and heterogeneous connectivity patterns using low-dimensional embeddings. As a result,…

机器学习 · 计算机科学 2026-05-01 Sofía Pérez Casulo , Marcelo Fiori , Bernardo Marenco , Federico Larroca

We propose a new method for embedding graphs while preserving directed edge information. Learning such continuous-space vector representations (or embeddings) of nodes in a graph is an important first step for using network information…

机器学习 · 计算机科学 2017-09-15 Sami Abu-El-Haija , Bryan Perozzi , Rami Al-Rfou

Multimodal representation learning produces high-dimensional embeddings that align diverse modalities in a shared latent space. While this enables strong generalization, it also introduces scalability challenges, both in terms of storage…

机器学习 · 计算机科学 2025-09-30 Eleonora Grassucci , Giordano Cicchetti , Aurelio Uncini , Danilo Comminiello

In contrast to regular (simple) networks, hyper networks possess the ability to depict more complex relationships among nodes and store extensive information. Such networks are commonly found in real-world applications, such as in social…

社会与信息网络 · 计算机科学 2023-11-08 Shu Liu , Cameron Lai , Fujio Toriumi

Social network analysis is an important problem in data mining. A fundamental step for analyzing social networks is to encode network data into low-dimensional representations, i.e., network embeddings, so that the network topology…

社会与信息网络 · 计算机科学 2019-04-19 Qiaoyu Tan , Ninghao Liu , Xia Hu

The Class Activation Map (CAM) lookup of a neural network tells us to which regions the neural network focuses when it makes a decision. In the past, the CAM search method was dependent upon a specific internal module of the network. It has…

计算机视觉与模式识别 · 计算机科学 2022-08-16 Yitao Peng , Longzhen Yang , Yihang Liu , Lianghua He

Multimodal Recommender Systems aim to improve recommendation accuracy by integrating heterogeneous content, such as images and textual metadata. While effective, it remains unclear whether their gains stem from true multimodal understanding…

信息检索 · 计算机科学 2025-08-07 Claudio Pomo , Matteo Attimonelli , Danilo Danese , Fedelucio Narducci , Tommaso Di Noia

Pretrained encoders for mathematical texts have achieved significant improvements on various tasks such as formula classification and information retrieval. Yet they remain limited in representing and capturing student strategies for entire…

计算机与社会 · 计算机科学 2026-04-13 Siddhartha Pradhan , Ethan Prihar , Erin Ottmar

Despite the exceptional reasoning capabilities of Multimodal Large Language Models (MLLMs), their adaptation into universal embedding models is significantly impeded by task conflict. To address this, we propose TSEmbed, a universal…

计算与语言 · 计算机科学 2026-03-06 Yebo Wu , Feng Liu , Ziwei Xie , Zhiyuan Liu , Changwang Zhang , Jun Wang , Li Li