Search Results for author: Sheng Ouyang

Found 6 papers, 0 papers with code

Exploring Task Unification in Graph Representation Learning via Generative Approach

no code implementations21 Mar 2024 Yulan Hu, Sheng Ouyang, Zhirui Yang, Ge Chen, Junchen Wan, Xiao Wang, Yong liu

Specifically, GA^2E proposes to use the subgraph as the meta-structure, which remains consistent across all graph tasks (ranging from node-, edge-, and graph-level to transfer learning) and all stages (both during training and inference).

Graph Representation Learning Transfer Learning

VIGraph: Generative Self-supervised Learning for Class-Imbalanced Node Classification

no code implementations2 Nov 2023 Yulan Hu, Sheng Ouyang, Zhirui Yang, Yong liu

VIGraph strictly adheres to the concept of imbalance when constructing imbalanced graphs and innovatively leverages the variational inference (VI) ability of Variational GAE to generate nodes for minority classes.

Contrastive Learning Node Classification +2

Graph Ranking Contrastive Learning: A Extremely Simple yet Efficient Method

no code implementations23 Oct 2023 Yulan Hu, Sheng Ouyang, Jingyu Liu, Ge Chen, Zhirui Yang, Junchen Wan, Fuzheng Zhang, Zhongyuan Wang, Yong liu

Thus, we propose GraphRank, a simple yet efficient graph contrastive learning method that addresses the problem of false negative samples by redefining the concept of negative samples to a certain extent, thereby avoiding the issue of false negative samples.

Contrastive Learning Graph Learning +1

Refining Latent Representations: A Generative SSL Approach for Heterogeneous Graph Learning

no code implementations17 Oct 2023 Yulan Hu, Zhirui Yang, Sheng Ouyang, Yong liu

Instead of focusing on designing complex strategies to capture heterogeneity, HGVAE centers on refining the latent representation.

Attribute Contrastive Learning +3

Boosting Chinese ASR Error Correction with Dynamic Error Scaling Mechanism

no code implementations7 Aug 2023 Jiaxin Fan, Yong Zhang, Hanzhang Li, Jianzong Wang, Zhitao Li, Sheng Ouyang, Ning Cheng, Jing Xiao

Chinese Automatic Speech Recognition (ASR) error correction presents significant challenges due to the Chinese language's unique features, including a large character set and borderless, morpheme-based structure.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +1

Understanding the Generalization Performance of Spectral Clustering Algorithms

no code implementations30 Apr 2022 Shaojie Li, Sheng Ouyang, Yong liu

The theoretical analysis of spectral clustering mainly focuses on consistency, while there is relatively little research on its generalization performance.

Clustering

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