Search Results for author: Xiangyu Dong

Found 9 papers, 6 papers with code

SmoothGNN: Smoothing-based GNN for Unsupervised Node Anomaly Detection

no code implementations27 May 2024 Xiangyu Dong, Xingyi Zhang, Yanni Sun, Lei Chen, Mingxuan Yuan, Sibo Wang

Through empirical and theoretical analysis of real-world node anomaly detection (NAD) datasets, we observe that anomalous and normal nodes show different patterns in the smoothing process, which can be leveraged to enhance NAD tasks.

KPG: Key Propagation Graph Generator for Rumor Detection based on Reinforcement Learning

no code implementations21 May 2024 Yusong Zhang, Kun Xie, Xingyi Zhang, Xiangyu Dong, Sibo Wang

In this paper, we propose Key Propagation Graph Generator (KPG), a novel reinforcement learning-based rumor detection framework that generates contextually coherent and informative propagation patterns for events with insufficient topology information, while also identifies indicative substructures for events with redundant and noisy propagation structures.

Data Augmentation

Rayleigh Quotient Graph Neural Networks for Graph-level Anomaly Detection

1 code implementation4 Oct 2023 Xiangyu Dong, Xingyi Zhang, Sibo Wang

Moreover, we prove that the accumulated spectral energy of the graph signal can be represented by its Rayleigh Quotient, indicating that the Rayleigh Quotient is a driving factor behind the anomalous properties of graphs.

Anomaly Detection

Logic-Consistency Text Generation from Semantic Parses

1 code implementation Findings (ACL) 2021 Chang Shu, Yusen Zhang, Xiangyu Dong, Peng Shi, Tao Yu, Rui Zhang

Text generation from semantic parses is to generate textual descriptions for formal representation inputs such as logic forms and SQL queries.

Text Generation

Did You Ask a Good Question? A Cross-Domain Question Intention Classification Benchmark for Text-to-SQL

1 code implementation23 Oct 2020 Yusen Zhang, Xiangyu Dong, Shuaichen Chang, Tao Yu, Peng Shi, Rui Zhang

Neural models have achieved significant results on the text-to-SQL task, in which most current work assumes all the input questions are legal and generates a SQL query for any input.

Text-To-SQL

Injecting Entity Types into Entity-Guided Text Generation

2 code implementations EMNLP 2021 Xiangyu Dong, Wenhao Yu, Chenguang Zhu, Meng Jiang

Our model has a multi-step decoder that injects the entity types into the process of entity mention generation.

Decoder Text Generation +1

Pairwise Learning for Name Disambiguation in Large-Scale Heterogeneous Academic Networks

no code implementations30 Aug 2020 Qingyun Sun, Hao Peng, Jian-Xin Li, Senzhang Wang, Xiangyu Dong, Liangxuan Zhao, Philip S. Yu, Lifang He

Although these attributes may change, an author's co-authors and research topics do not change frequently with time, which means that papers within a period have similar text and relation information in the academic network.

Attribute Graph Embedding

MedDialog: Two Large-scale Medical Dialogue Datasets

1 code implementation arXiv 2020 Xuehai He, Shu Chen, Zeqian Ju, Xiangyu Dong, Hongchao Fang, Sicheng Wang, Yue Yang, Jiaqi Zeng, Ruisi Zhang, Ruoyu Zhang, Meng Zhou, Penghui Zhu, Pengtao Xie

Medical dialogue systems are promising in assisting in telemedicine to increase access to healthcare services, improve the quality of patient care, and reduce medical costs.

Vocal Bursts Valence Prediction

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