Search Results for author: Zhonghai Wu

Found 26 papers, 7 papers with code

Section-Aware Commonsense Knowledge-Grounded Dialogue Generation with Pre-trained Language Model

1 code implementation COLING 2022 Sixing Wu, Ying Li, Ping Xue, Dawei Zhang, Zhonghai Wu

However, a dialogue is always aligned to a lot of retrieved fact candidates; as a result, the linearized text is always lengthy and then significantly increases the burden of using PLMs.

Dialogue Generation Language Modeling +1

More is Better: Enhancing Open-Domain Dialogue Generation via Multi-Source Heterogeneous Knowledge

1 code implementation EMNLP 2021 Sixing Wu, Ying Li, Minghui Wang, Dawei Zhang, Yang Zhou, Zhonghai Wu

Despite achieving remarkable performance, previous knowledge-enhanced works usually only use a single-source homogeneous knowledge base of limited knowledge coverage.

Dialogue Generation

FedVCK: Non-IID Robust and Communication-Efficient Federated Learning via Valuable Condensed Knowledge for Medical Image Analysis

no code implementations24 Dec 2024 Guochen Yan, Luyuan Xie, Xinyi Gao, Wentao Zhang, Qingni Shen, Yuejian Fang, Zhonghai Wu

Specifically, on the client side, we condense the knowledge of each client into a small dataset and further enhance the condensation procedure with latent distribution constraints, facilitating the effective capture of high-quality knowledge.

Contrastive Learning Federated Learning +1

Towards Federated Graph Learning in One-shot Communication

no code implementations18 Nov 2024 Guochen Yan, Xunkai Li, Luyuan Xie, Wentao Zhang, Qingni Shen, Yuejian Fang, Zhonghai Wu

Specifically, for effective graph learning in one communication round, our method estimates and aggregates class-wise feature distribution statistics to construct a global pseudo-graph on the server, facilitating the training of a global graph model.

Federated Learning Graph Learning +1

Multi-Normal Prototypes Learning for Weakly Supervised Anomaly Detection

1 code implementation23 Aug 2024 Zhijin Dong, Hongzhi Liu, Boyuan Ren, Weimin Xiong, Zhonghai Wu

Most of the existing methods assume the normal sample data clusters around a single central prototype while the real data may consist of multiple categories or subgroups.

Contrastive Learning Supervised Anomaly Detection +1

pFLFE: Cross-silo Personalized Federated Learning via Feature Enhancement on Medical Image Segmentation

no code implementations29 Jun 2024 Luyuan Xie, Manqing Lin, Siyuan Liu, Chenming Xu, Tianyu Luan, Cong Li, Yuejian Fang, Qingni Shen, Zhonghai Wu

In medical image segmentation, personalized cross-silo federated learning (FL) is becoming popular for utilizing varied data across healthcare settings to overcome data scarcity and privacy concerns.

Image Segmentation Medical Image Segmentation +3

Large Language Model with Graph Convolution for Recommendation

no code implementations14 Feb 2024 Yingpeng Du, Ziyan Wang, Zhu Sun, Haoyan Chua, Hongzhi Liu, Zhonghai Wu, Yining Ma, Jie Zhang, Youchen Sun

To adapt text-based LLMs with structured graphs, We use the LLM as an aggregator in graph processing, allowing it to understand graph-based information step by step.

Hallucination Language Modeling +2

Bridging the Information Gap Between Domain-Specific Model and General LLM for Personalized Recommendation

no code implementations7 Nov 2023 Wenxuan Zhang, Hongzhi Liu, Yingpeng Du, Chen Zhu, Yang song, HengShu Zhu, Zhonghai Wu

Nevertheless, these methods encounter the certain issue that information such as community behavior pattern in RS domain is challenging to express in natural language, which limits the capability of LLMs to surpass state-of-the-art domain-specific models.

Apple of Sodom: Hidden Backdoors in Superior Sentence Embeddings via Contrastive Learning

no code implementations20 Oct 2022 Xiaoyi Chen, Baisong Xin, Shengfang Zhai, Shiqing Ma, Qingni Shen, Zhonghai Wu

This paper finds that contrastive learning can produce superior sentence embeddings for pre-trained models but is also vulnerable to backdoor attacks.

Backdoor Attack Contrastive Learning +3

TC-SKNet with GridMask for Low-complexity Classification of Acoustic scene

no code implementations5 Oct 2022 Luyuan Xie, Yan Zhong, Lin Yang, Zhaoyu Yan, Zhonghai Wu, Junjie Wang

In our experiments, the performance gain brought by GridMask is stronger than spectrum augmentation in ASCs.

AutoML Data Augmentation

Kallima: A Clean-label Framework for Textual Backdoor Attacks

no code implementations3 Jun 2022 Xiaoyi Chen, Yinpeng Dong, Zeyu Sun, Shengfang Zhai, Qingni Shen, Zhonghai Wu

Although Deep Neural Network (DNN) has led to unprecedented progress in various natural language processing (NLP) tasks, research shows that deep models are extremely vulnerable to backdoor attacks.

Revisiting Graph based Social Recommendation: A Distillation Enhanced Social Graph Network

no code implementations Proceedings of the ACM Web Conference 2022 Ying Li, Ye Tao, Su Zhang, Zhirong Hou, Zhonghai Wu

We train a model that integrates information from the user-item interaction graph and the user-user social graph and train two auxiliary models that only use one of the above graphs respectively.

Knowledge Distillation Recommendation Systems

A Vertical Federated Learning Framework for Horizontally Partitioned Labels

no code implementations18 Jun 2021 Wensheng Xia, Ying Li, Lan Zhang, Zhonghai Wu, Xiaoyong Yuan

To address these challenges, we propose a novel vertical federated learning framework named Cascade Vertical Federated Learning (CVFL) to fully utilize all horizontally partitioned labels to train neural networks with privacy-preservation.

Vertical Federated Learning

Relation-Aware Neighborhood Matching Model for Entity Alignment

1 code implementation15 Dec 2020 Yao Zhu, Hongzhi Liu, Zhonghai Wu, Yingpeng Du

Besides comparing neighbor nodes when matching neighborhood, we also try to explore useful information from the connected relations.

Entity Alignment Knowledge Graphs +2

BadNL: Backdoor Attacks against NLP Models with Semantic-preserving Improvements

no code implementations1 Jun 2020 Xiaoyi Chen, Ahmed Salem, Dingfan Chen, Michael Backes, Shiqing Ma, Qingni Shen, Zhonghai Wu, Yang Zhang

In this paper, we perform a systematic investigation of backdoor attack on NLP models, and propose BadNL, a general NLP backdoor attack framework including novel attack methods.

Backdoor Attack BIG-bench Machine Learning +1

Representation Learning with Ordered Relation Paths for Knowledge Graph Completion

1 code implementation IJCNLP 2019 Yao Zhu, Hongzhi Liu, Zhonghai Wu, Yang song, Tao Zhang

Recently, a few methods take relation paths into consideration but pay less attention to the order of relations in paths which is important for reasoning.

Ranked #3 on Link Prediction on FB15k (MR metric)

Link Prediction Prediction +2

An influence-based fast preceding questionnaire model for elderly assessments

no code implementations22 Nov 2017 Tong Mo, Rong Zhang, Weiping Li, Jingbo Zhang, Zhonghai Wu, Wei Tan

The practice in an elderly-care company shows that the FPQM can reduce the number of attributes by 90. 56% with a prediction accuracy of 98. 39%.

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