Search Results for author: Yizhen Zheng

Found 12 papers, 9 papers with code

Multi-Scale Contrastive Siamese Networks for Self-Supervised Graph Representation Learning

1 code implementation12 May 2021 Ming Jin, Yizhen Zheng, Yuan-Fang Li, Chen Gong, Chuan Zhou, Shirui Pan

To overcome this problem, inspired by the recent success of graph contrastive learning and Siamese networks in visual representation learning, we propose a novel self-supervised approach in this paper to learn node representations by enhancing Siamese self-distillation with multi-scale contrastive learning.

Contrastive Learning Graph Representation Learning

Towards Graph Self-Supervised Learning with Contrastive Adjusted Zooming

no code implementations20 Nov 2021 Yizhen Zheng, Ming Jin, Shirui Pan, Yuan-Fang Li, Hao Peng, Ming Li, Zhao Li

To overcome the aforementioned problems, we introduce a novel self-supervised graph representation learning algorithm via Graph Contrastive Adjusted Zooming, namely G-Zoom, to learn node representations by leveraging the proposed adjusted zooming scheme.

Contrastive Learning Graph Representation Learning +1

CGMN: A Contrastive Graph Matching Network for Self-Supervised Graph Similarity Learning

1 code implementation30 May 2022 Di Jin, Luzhi Wang, Yizhen Zheng, Xiang Li, Fei Jiang, Wei Lin, Shirui Pan

As most of the existing graph neural networks yield effective graph representations of a single graph, little effort has been made for jointly learning two graph representations and calculating their similarity score.

Collaborative Filtering Graph Classification +4

Unifying Graph Contrastive Learning with Flexible Contextual Scopes

1 code implementation17 Oct 2022 Yizhen Zheng, Yu Zheng, Xiaofei Zhou, Chen Gong, Vincent CS Lee, Shirui Pan

To address aforementioned problems, we present a simple self-supervised learning method termed Unifying Graph Contrastive Learning with Flexible Contextual Scopes (UGCL for short).

Contrastive Learning Graph Representation Learning +1

Beyond Smoothing: Unsupervised Graph Representation Learning with Edge Heterophily Discriminating

1 code implementation25 Nov 2022 Yixin Liu, Yizhen Zheng, Daokun Zhang, Vincent CS Lee, Shirui Pan

Node representations are learned through contrasting the dual-channel encodings obtained from the discriminated homophilic and heterophilic edges.

Graph Representation Learning

Dual Intent Enhanced Graph Neural Network for Session-based New Item Recommendation

1 code implementation10 May 2023 Di Jin, Luzhi Wang, Yizhen Zheng, Guojie Song, Fei Jiang, Xiang Li, Wei Lin, Shirui Pan

We design a dual-intent network to learn user intent from an attention mechanism and the distribution of historical data respectively, which can simulate users' decision-making process in interacting with a new item.

Decision Making Session-Based Recommendations +1

A Survey on Fairness-aware Recommender Systems

no code implementations1 Jun 2023 Di Jin, Luzhi Wang, He Zhang, Yizhen Zheng, Weiping Ding, Feng Xia, Shirui Pan

As information filtering services, recommender systems have extremely enriched our daily life by providing personalized suggestions and facilitating people in decision-making, which makes them vital and indispensable to human society in the information era.

Decision Making Fairness +1

Integrating Graphs with Large Language Models: Methods and Prospects

no code implementations9 Oct 2023 Shirui Pan, Yizhen Zheng, Yixin Liu

Large language models (LLMs) such as GPT-4 have emerged as frontrunners, showcasing unparalleled prowess in diverse applications, including answering queries, code generation, and more.

Code Generation Graph Learning

Large Language Models for Scientific Synthesis, Inference and Explanation

1 code implementation12 Oct 2023 Yizhen Zheng, Huan Yee Koh, Jiaxin Ju, Anh T. N. Nguyen, Lauren T. May, Geoffrey I. Webb, Shirui Pan

We present a method for using general-purpose large language models to make inferences from scientific datasets of the form usually associated with special-purpose machine learning algorithms.

Code Generation Language Modelling +2

PREM: A Simple Yet Effective Approach for Node-Level Graph Anomaly Detection

1 code implementation18 Oct 2023 Junjun Pan, Yixin Liu, Yizhen Zheng, Shirui Pan

Comprising two modules - a pre-processing module and an ego-neighbor matching module - PREM eliminates the necessity for message-passing propagation during training, and employs a simple contrastive loss, leading to considerable reductions in training time and memory usage.

Contrastive Learning Graph Anomaly Detection

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