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Heterogeneous Graph Neural Networks (HGNNs) are a class of deep learning models designed specifically for heterogeneous graphs, which are graphs that contain different types of nodes and edges. This paper investigates the application of…

机器学习 · 计算机科学 2024-05-13 Zhen Hao Wong , Hansi Yang , Xiaoyi Fu , Quanming Yao

In recent years, using a self-supervised learning framework to learn the general characteristics of graphs has been considered a promising paradigm for graph representation learning. The core of self-supervised learning strategies for graph…

机器学习 · 计算机科学 2022-12-09 Jiawei Zhu , Mei Hong , Ronghua Du , Haifeng Li

We analyze the performance of graph neural network (GNN) architectures from the perspective of random graph theory. Our approach promises to complement existing lenses on GNN analysis, such as combinatorial expressive power and worst-case…

机器学习 · 计算机科学 2023-10-12 Drake Brown , Trevor Garrity , Kaden Parker , Jason Oliphant , Stone Carson , Cole Hanson , Zachary Boyd

Graph instance contrastive learning has been proved as an effective task for Graph Neural Network (GNN) pre-training. However, one key issue may seriously impede the representative power in existing works: Positive instances created by…

机器学习 · 计算机科学 2022-06-27 Xueyi Liu , Yu Rong , Tingyang Xu , Fuchun Sun , Wenbing Huang , Junzhou Huang

Supervised training of neural networks for classification is typically performed with a global loss function. The loss function provides a gradient for the output layer, and this gradient is back-propagated to hidden layers to dictate an…

机器学习 · 统计学 2019-05-09 Arild Nøkland , Lars Hiller Eidnes

Recurrent Neural networks (RNN) have shown promising potential for learning dynamics of sequential data. However, artificial neural networks are known to exhibit poor robustness in presence of input noise, where the sequential architecture…

机器学习 · 计算机科学 2021-05-05 Arash Amini , Guangyi Liu , Nader Motee

Deep neural networks (DNNs) are widely used as surrogate models in geophysical applications; incorporating theoretical guidance into DNNs has improved the generalizability. However, most of such approaches define the loss function based on…

机器学习 · 计算机科学 2021-09-28 Rui Xu , Dongxiao Zhang , Miao Rong , Nanzhe Wang

Graph Neural Networks (GNNs) have achieved state-of-the-art performance in solving graph classification tasks. However, most GNN architectures aggregate information from all nodes and edges in a graph, regardless of their relevance to the…

机器学习 · 统计学 2024-04-19 Pablo Sanchez-Martin , Kinaan Aamir Khan , Isabel Valera

Graph neural networks (GNNs) have emerged as the standard method for numerous tasks on graph-structured data such as node classification. However, real-world graphs are often evolving over time and even new classes may arise. We model these…

机器学习 · 计算机科学 2021-12-21 Lukas Galke , Benedikt Franke , Tobias Zielke , Ansgar Scherp

Graph-based Neural Networks (GNNs) are recent models created for learning representations of nodes (and graphs), which have achieved promising results when detecting patterns that occur in large-scale data relating different entities. Among…

机器学习 · 计算机科学 2021-08-20 Ronald D. R. Pereira , Fabrício Murai

Graphs are a commonly used construct for representing relationships between elements in complex high dimensional datasets. Many real-world phenomenon are dynamic in nature, meaning that any graph used to represent them is inherently…

社会与信息网络 · 计算机科学 2018-11-21 Stephen Bonner , John Brennan , Ibad Kureshi , Georgios Theodoropoulos , Andrew Stephen McGough , Boguslaw Obara

Learning long-term dependencies is a key long-standing challenge of recurrent neural networks (RNNs). Hierarchical recurrent neural networks (HRNNs) have been considered a promising approach as long-term dependencies are resolved through…

机器学习 · 计算机科学 2019-10-14 Asier Mujika , Felix Weissenberger , Angelika Steger

Graph Neural Networks (GNNs) rely on graph convolutions to exploit meaningful patterns in networked data. Based on matrix multiplications, convolutions incur in high computational costs leading to scalability limitations in practice. To…

机器学习 · 计算机科学 2022-10-28 Juan Cervino , Luana Ruiz , Alejandro Ribeiro

Graph neural networks (GNNs) are powerful tools for developing scalable, decentralized artificial intelligence in large-scale networked systems, such as wireless networks, power grids, and transportation networks. Currently, GNNs in…

机器学习 · 计算机科学 2024-12-10 Rostyslav Olshevskyi , Zhongyuan Zhao , Kevin Chan , Gunjan Verma , Ananthram Swami , Santiago Segarra

Graph Neural Networks (GNNs) have achieved notable success in learning from graph-structured data, owing to their ability to capture intricate dependencies and relationships between nodes. They excel in various applications, including…

机器学习 · 计算机科学 2023-11-29 Akansha A

Temporal graph neural networks (TGNNs) have been widely used for modeling time-evolving graph-related tasks due to their ability to capture both graph topology dependency and non-linear temporal dynamic. The explanation of TGNNs is of vital…

机器学习 · 计算机科学 2022-09-05 Wenchong He , Minh N. Vu , Zhe Jiang , My T. Thai

Recently many first and second order variants of SGD have been proposed to facilitate training of Deep Neural Networks (DNNs). A common limitation of these works stem from the fact that they use the same learning rate across all instances…

机器学习 · 计算机科学 2021-05-31 Shreyas Saxena , Nidhi Vyas , Dennis DeCoste

As an emerging artificial intelligence technology, graph neural networks (GNNs) have exhibited promising performance across a wide range of graph-related applications. However, information exchanges among neighbor nodes in GNN pose new…

分布式、并行与集群计算 · 计算机科学 2024-05-10 Jun Li , Weiwei Zhang , Kang Wei , Guangji Chen , Long Shi , Wen Chen

There have been several recent efforts towards developing representations for multivariate time-series in an unsupervised learning framework. Such representations can prove beneficial in tasks such as activity recognition, health…

机器学习 · 计算机科学 2022-09-23 Yitian Zhang , Florence Regol , Antonios Valkanas , Mark Coates

Deep Neural Networks (DNNs) suffer from a rapid decrease in performance when trained on a sequence of tasks where only data of the most recent task is available. This phenomenon, known as catastrophic forgetting, prevents DNNs from…

机器学习 · 计算机科学 2021-04-22 Felix Wiewel , Bin Yang