Search Results for author: Wei Ju

Found 26 papers, 6 papers with code

A Survey of Graph Neural Networks in Real world: Imbalance, Noise, Privacy and OOD Challenges

no code implementations7 Mar 2024 Wei Ju, Siyu Yi, Yifan Wang, Zhiping Xiao, Zhengyang Mao, Hourun Li, Yiyang Gu, Yifang Qin, Nan Yin, Senzhang Wang, Xinwang Liu, Xiao Luo, Philip S. Yu, Ming Zhang

To tackle these issues, substantial efforts have been devoted to improving the performance of GNN models in practical real-world scenarios, as well as enhancing their reliability and robustness.

Fraud Detection

COOL: A Conjoint Perspective on Spatio-Temporal Graph Neural Network for Traffic Forecasting

no code implementations2 Mar 2024 Wei Ju, Yusheng Zhao, Yifang Qin, Siyu Yi, Jingyang Yuan, Zhiping Xiao, Xiao Luo, Xiting Yan, Ming Zhang

Toward this end, this paper proposes Conjoint Spatio-Temporal graph neural network (abbreviated as COOL), which models heterogeneous graphs from prior and posterior information to conjointly capture high-order spatio-temporal relationships.

A Survey of Data-Efficient Graph Learning

no code implementations1 Feb 2024 Wei Ju, Siyu Yi, Yifan Wang, Qingqing Long, Junyu Luo, Zhiping Xiao, Ming Zhang

Graph-structured data, prevalent in domains ranging from social networks to biochemical analysis, serve as the foundation for diverse real-world systems.

Graph Learning

GPS: Graph Contrastive Learning via Multi-scale Augmented Views from Adversarial Pooling

no code implementations29 Jan 2024 Wei Ju, Yiyang Gu, Zhengyang Mao, Ziyue Qiao, Yifang Qin, Xiao Luo, Hui Xiong, Ming Zhang

Self-supervised graph representation learning has recently shown considerable promise in a range of fields, including bioinformatics and social networks.

Adversarial Robustness Contrastive Learning +3

PolyCF: Towards the Optimal Spectral Graph Filters for Collaborative Filtering

no code implementations23 Jan 2024 Yifang Qin, Wei Ju, Xiao Luo, Yiyang Gu, Zhiping Xiao, Ming Zhang

Collaborative Filtering (CF) is a pivotal research area in recommender systems that capitalizes on collaborative similarities between users and items to provide personalized recommendations.

Collaborative Filtering Recommendation Systems

A Survey on Graph Neural Networks in Intelligent Transportation Systems

no code implementations1 Jan 2024 Hourun Li, Yusheng Zhao, Zhengyang Mao, Yifang Qin, Zhiping Xiao, Jiaqi Feng, Yiyang Gu, Wei Ju, Xiao Luo, Ming Zhang

However, most of the research in this area is still concentrated on traffic forecasting, while other ITS domains, such as autonomous vehicles and urban planning, still require more attention.

Autonomous Vehicles

ALEX: Towards Effective Graph Transfer Learning with Noisy Labels

no code implementations26 Sep 2023 Jingyang Yuan, Xiao Luo, Yifang Qin, Zhengyang Mao, Wei Ju, Ming Zhang

Nevertheless, the majority of GNN-based approaches have been examined using well-annotated benchmark datasets, leading to suboptimal performance in real-world graph learning scenarios.

Contrastive Learning Graph Learning +2

Dynamic Hypergraph Structure Learning for Traffic Flow Forecasting

no code implementations21 Sep 2023 Yusheng Zhao, Xiao Luo, Wei Ju, Chong Chen, Xian-Sheng Hua, Ming Zhang

This paper studies the problem of traffic flow forecasting, which aims to predict future traffic conditions on the basis of road networks and traffic conditions in the past.

Redundancy-Free Self-Supervised Relational Learning for Graph Clustering

1 code implementation9 Sep 2023 Si-Yu Yi, Wei Ju, Yifang Qin, Xiao Luo, Luchen Liu, Yong-Dao Zhou, Ming Zhang

Graph clustering, which learns the node representations for effective cluster assignments, is a fundamental yet challenging task in data analysis and has received considerable attention accompanied by graph neural networks in recent years.

Attribute Clustering +4

FIMO: A Challenge Formal Dataset for Automated Theorem Proving

1 code implementation8 Sep 2023 Chengwu Liu, Jianhao Shen, Huajian Xin, Zhengying Liu, Ye Yuan, Haiming Wang, Wei Ju, Chuanyang Zheng, Yichun Yin, Lin Li, Ming Zhang, Qun Liu

We present FIMO, an innovative dataset comprising formal mathematical problem statements sourced from the International Mathematical Olympiad (IMO) Shortlisted Problems.

Automated Theorem Proving

Towards Long-Tailed Recognition for Graph Classification via Collaborative Experts

no code implementations31 Aug 2023 Siyu Yi, Zhengyang Mao, Wei Ju, Yongdao Zhou, Luchen Liu, Xiao Luo, Ming Zhang

Graph classification, aiming at learning the graph-level representations for effective class assignments, has received outstanding achievements, which heavily relies on high-quality datasets that have balanced class distribution.

Contrastive Learning Graph Classification +2

RAHNet: Retrieval Augmented Hybrid Network for Long-tailed Graph Classification

no code implementations4 Aug 2023 Zhengyang Mao, Wei Ju, Yifang Qin, Xiao Luo, Ming Zhang

Recent approaches mainly focus on re-balancing different classes during model training, which fails to explicitly introduce new knowledge and sacrifices the performance of the head classes.

Graph Classification Retrieval

Learning on Graphs under Label Noise

no code implementations14 Jun 2023 Jingyang Yuan, Xiao Luo, Yifang Qin, Yusheng Zhao, Wei Ju, Ming Zhang

Since this regularization term cannot utilize label information, it can enhance the robustness of node representations to label noise.

Anomaly Detection Contrastive Learning +2

Towards Semi-supervised Universal Graph Classification

no code implementations31 May 2023 Xiao Luo, Yusheng Zhao, Yifang Qin, Wei Ju, Ming Zhang

To tackle class shifts, we estimate the certainty of unlabeled graphs using multiple subgraphs, which facilities the discovery of unlabeled data from unknown categories.

Graph Classification

TGNN: A Joint Semi-supervised Framework for Graph-level Classification

no code implementations23 Apr 2023 Wei Ju, Xiao Luo, Meng Qu, Yifan Wang, Chong Chen, Minghua Deng, Xian-Sheng Hua, Ming Zhang

The two twin modules collaborate with each other by exchanging instance similarity knowledge to fully explore the structure information of both labeled and unlabeled data.

Graph Classification

A Diffusion model for POI recommendation

1 code implementation14 Apr 2023 Yifang Qin, Hongjun Wu, Wei Ju, Xiao Luo, Ming Zhang

In this paper, we propose Diff-POI: a Diffusion-based model that samples the user's spatial preference for the next POI recommendation.

Learning Graph ODE for Continuous-Time Sequential Recommendation

no code implementations14 Apr 2023 Yifang Qin, Wei Ju, Hongjun Wu, Xiao Luo, Ming Zhang

Technically, GDERec is characterized by an autoregressive graph ordinary differential equation consisting of two components, which are parameterized by two tailored graph neural networks (GNNs) respectively to capture user preference from the perspective of hybrid dynamical systems.

Sequential Recommendation

A Comprehensive Survey on Deep Graph Representation Learning

no code implementations11 Apr 2023 Wei Ju, Zheng Fang, Yiyang Gu, Zequn Liu, Qingqing Long, Ziyue Qiao, Yifang Qin, Jianhao Shen, Fang Sun, Zhiping Xiao, Junwei Yang, Jingyang Yuan, Yusheng Zhao, Yifan Wang, Xiao Luo, Ming Zhang

Graph representation learning aims to effectively encode high-dimensional sparse graph-structured data into low-dimensional dense vectors, which is a fundamental task that has been widely studied in a range of fields, including machine learning and data mining.

Graph Embedding Graph Representation Learning

Robust Dancer: Long-term 3D Dance Synthesis Using Unpaired Data

1 code implementation29 Mar 2023 Bin Feng, Tenglong Ao, Zequn Liu, Wei Ju, Libin Liu, Ming Zhang

How to automatically synthesize natural-looking dance movements based on a piece of music is an incrementally popular yet challenging task.

Disentanglement

GLCC: A General Framework for Graph-Level Clustering

no code implementations21 Oct 2022 Wei Ju, Yiyang Gu, Binqi Chen, Gongbo Sun, Yifang Qin, Xingyuming Liu, Xiao Luo, Ming Zhang

In this paper, we propose a general graph-level clustering framework named Graph-Level Contrastive Clustering (GLCC) given multiple graphs.

Clustering Contrastive Learning +2

Kernel-based Substructure Exploration for Next POI Recommendation

1 code implementation8 Oct 2022 Wei Ju, Yifang Qin, Ziyue Qiao, Xiao Luo, Yifan Wang, Yanjie Fu, Ming Zhang

To tackle the above issues, we propose a Kernel-Based Graph Neural Network (KBGNN) for next POI recommendation, which combines the characteristics of both geographical and sequential influences in a collaborative way.

Recommendation Systems

KGNN: Harnessing Kernel-based Networks for Semi-supervised Graph Classification

no code implementations21 May 2022 Wei Ju, Junwei Yang, Meng Qu, Weiping Song, Jianhao Shen, Ming Zhang

This problem is typically solved by using graph neural networks (GNNs), which yet rely on a large number of labeled graphs for training and are unable to leverage unlabeled graphs.

Graph Classification

A Note on Comparison of F-measures

no code implementations9 Dec 2021 Wei Ju, Wenxin Jiang

We comment on a recent TKDE paper "Linear Approximation of F-measure for the Performance Evaluation of Classification Algorithms on Imbalanced Data Sets", and make two improvements related to comparison of F-measures for two prediction rules.

When does MAML Work the Best? An Empirical Study on Model-Agnostic Meta-Learning in NLP Applications

no code implementations24 May 2020 Zequn Liu, Ruiyi Zhang, Yiping Song, Wei Ju, Ming Zhang

Model-Agnostic Meta-Learning (MAML), a model-agnostic meta-learning method, is successfully employed in NLP applications including few-shot text classification and multi-domain low-resource language generation.

Few-Shot Text Classification Language Modelling +3

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