Search Results for author: Yuxiang Ren

Found 15 papers, 3 papers with code

Characterizing the Influence of Topology on Graph Learning Tasks

no code implementations11 Apr 2024 Kailong Wu, Yule Xie, Jiaxin Ding, Yuxiang Ren, Luoyi Fu, Xinbing Wang, Chenghu Zhou

Graph neural networks (GNN) have achieved remarkable success in a wide range of tasks by encoding features combined with topology to create effective representations.

Graph Learning Stochastic Block Model

Sculpting Molecules in 3D: A Flexible Substructure Aware Framework for Text-Oriented Molecular Optimization

no code implementations6 Mar 2024 Kaiwei Zhang, Yange Lin, Guangcheng Wu, Yuxiang Ren, Xuecang Zhang, Bo wang, XiaoYu Zhang, Weitao Du

This work not only holds general significance for the advancement of deep learning methodologies but also paves the way for a transformative shift in molecular design strategies.

Large Language Models as Topological Structure Enhancers for Text-Attributed Graphs

no code implementations24 Nov 2023 Shengyin Sun, Yuxiang Ren, Chen Ma, Xuecang Zhang

The latest advancements in large language models (LLMs) have revolutionized the field of natural language processing (NLP).

Graph Learning Information Retrieval +6

Empower Text-Attributed Graphs Learning with Large Language Models (LLMs)

no code implementations15 Oct 2023 Jianxiang Yu, Yuxiang Ren, Chenghua Gong, Jiaqi Tan, Xiang Li, Xuecang Zhang

In order to tackle this challenge, we propose a lightweight paradigm called ENG, which adopts a plug-and-play approach to empower text-attributed graphs through node generation using LLMs.

Few-Shot Learning Graph Learning +3

Measuring and Sampling: A Metric-guided Subgraph Learning Framework for Graph Neural Network

no code implementations30 Dec 2021 Jiyang Bai, Yuxiang Ren, Jiawei Zhang

We demonstrate the effectiveness and efficiency of MeGuide in training various GNNs on multiple datasets.

CGCL: Collaborative Graph Contrastive Learning without Handcrafted Graph Data Augmentations

1 code implementation5 Nov 2021 Tianyu Zhang, Yuxiang Ren, Wenzheng Feng, Weitao Du, Xuecang Zhang

In this paper, we show the potential hazards of inappropriate augmentations and then propose a novel Collaborative Graph Contrastive Learning framework (CGCL).

Contrastive Learning Data Augmentation +2

Adversarial Active Learning based Heterogeneous Graph Neural Network for Fake News Detection

no code implementations27 Jan 2021 Yuxiang Ren, Bo wang, Jiawei Zhang, Yi Chang

AA-HGNN utilizes an active learning framework to enhance learning performance, especially when facing the paucity of labeled data.

Active Learning Fake News Detection +2

Ripple Walk Training: A Subgraph-based training framework for Large and Deep Graph Neural Network

no code implementations17 Feb 2020 Jiyang Bai, Yuxiang Ren, Jiawei Zhang

To deal with these problems, in this paper, we propose a general subgraph-based training framework, namely Ripple Walk Training (RWT), for deep and large graph neural networks.

Attribute

Fake News Detection on News-Oriented Heterogeneous Information Networks through Hierarchical Graph Attention

no code implementations5 Feb 2020 Yuxiang Ren, Jiawei Zhang

In addition, the experiment proved the expandability and generalizability of our for graph representation learning and other node classification related applications in heterogeneous graphs.

Fake News Detection Graph Attention +2

EnsemFDet: An Ensemble Approach to Fraud Detection based on Bipartite Graph

no code implementations23 Dec 2019 Yuxiang Ren, Hao Zhu, Jiawei Zhang, Peng Dai, Liefeng Bo

Existing fraud detection methods try to identify unexpected dense subgraphs and treat related nodes as suspicious.

Fraud Detection

Heterogeneous Deep Graph Infomax

1 code implementation19 Nov 2019 Yuxiang Ren, Bo Liu, Chao Huang, Peng Dai, Liefeng Bo, Jiawei Zhang

The derived node representations can be used to serve various downstream tasks, such as node classification and node clustering.

Classification Clustering +4

BGADAM: Boosting based Genetic-Evolutionary ADAM for Neural Network Optimization

no code implementations26 Jul 2019 Jiyang Bai, Yuxiang Ren, Jiawei Zhang

To resolve this problem and further maximize the advantages of genetic algorithm with base learners, we propose to implement the boosting strategy for input model training, which can subsequently improve the effectiveness of genetic algorithm.

DEAM: Adaptive Momentum with Discriminative Weight for Stochastic Optimization

no code implementations25 Jul 2019 Jiyang Bai, Yuxiang Ren, Jiawei Zhang

Optimization algorithms with momentum, e. g., (ADAM), have been widely used for building deep learning models due to the faster convergence rates compared with stochastic gradient descent (SGD).

Stochastic Optimization

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