Search Results for author: Hengyu Liu

Found 10 papers, 1 papers with code

FedSI: Federated Subnetwork Inference for Efficient Uncertainty Quantification

no code implementations24 Apr 2024 Hui Chen, Hengyu Liu, Zhangkai Wu, Xuhui Fan, Longbing Cao

While deep neural networks (DNNs) based personalized federated learning (PFL) is demanding for addressing data heterogeneity and shows promising performance, existing methods for federated learning (FL) suffer from efficient systematic uncertainty quantification.

Personalized Federated Learning Uncertainty Quantification

Endora: Video Generation Models as Endoscopy Simulators

no code implementations17 Mar 2024 Chenxin Li, Hengyu Liu, Yifan Liu, Brandon Y. Feng, Wuyang Li, Xinyu Liu, Zhen Chen, Jing Shao, Yixuan Yuan

In a nutshell, Endora marks a notable breakthrough in the deployment of generative AI for clinical endoscopy research, setting a substantial stage for further advances in medical content generation.

Data Augmentation Video Generation

Bayesian Personalized Federated Learning with Shared and Personalized Uncertainty Representations

no code implementations27 Sep 2023 Hui Chen, Hengyu Liu, Longbing Cao, Tiancheng Zhang

BPFL aims to quantify the uncertainty and heterogeneity within and across clients towards uncertainty representations by addressing the statistical heterogeneity of client data.

Personalized Federated Learning

GPT4Graph: Can Large Language Models Understand Graph Structured Data ? An Empirical Evaluation and Benchmarking

no code implementations24 May 2023 Jiayan Guo, Lun Du, Hengyu Liu, Mengyu Zhou, Xinyi He, Shi Han

In this study, we conduct an extensive investigation to assess the proficiency of LLMs in comprehending graph data, employing a diverse range of structural and semantic-related tasks.

Benchmarking Graph Mining +1

Enabling and Analyzing How to Efficiently Extract Information from Hybrid Long Documents with LLMs

no code implementations24 May 2023 Chongjian Yue, Xinrun Xu, Xiaojun Ma, Lun Du, Hengyu Liu, Zhiming Ding, Yanbing Jiang, Shi Han, Dongmei Zhang

We propose an Automated Financial Information Extraction (AFIE) framework that enhances LLMs' ability to comprehend and extract information from financial reports.

GPT-3.5 GPT-4 +1

CMSG Cross-Media Semantic-Graph Feature Matching Algorithm for Autonomous Vehicle Relocalization

no code implementations15 May 2023 Shuhang Tan, Hengyu Liu, Zhiling Wang

Although matching features between different media is challenging, we believe cross-media is the tendency for AV relocalization since its low cost and accuracy can be comparable to the same-sensor-based methods.

A Probabilistic Generative Model for Tracking Multi-Knowledge Concept Mastery Probability

no code implementations17 Feb 2023 Hengyu Liu, Tiancheng Zhang, Fan Li, Minghe Yu, Ge Yu

To better model students' exercise responses, we proposed a logarithmic linear model with three interactive strategies, which models students' exercise responses by considering the relationship among students' knowledge status, knowledge concept, and problems.

Knowledge Tracing

Learning Rate Perturbation: A Generic Plugin of Learning Rate Schedule towards Flatter Local Minima

no code implementations25 Aug 2022 Hengyu Liu, Qiang Fu, Lun Du, Tiancheng Zhang, Ge Yu, Shi Han, Dongmei Zhang

Learning rate is one of the most important hyper-parameters that has a significant influence on neural network training.

HTGN-BTW: Heterogeneous Temporal Graph Network with Bi-Time-Window Training Strategy for Temporal Link Prediction

no code implementations25 Feb 2022 Chongjian Yue, Lun Du, Qiang Fu, Wendong Bi, Hengyu Liu, Yu Gu, Di Yao

The Temporal Link Prediction task of WSDM Cup 2022 expects a single model that can work well on two kinds of temporal graphs simultaneously, which have quite different characteristics and data properties, to predict whether a link of a given type will occur between two given nodes within a given time span.

Link Prediction

GBK-GNN: Gated Bi-Kernel Graph Neural Networks for Modeling Both Homophily and Heterophily

1 code implementation29 Oct 2021 Lun Du, Xiaozhou Shi, Qiang Fu, Xiaojun Ma, Hengyu Liu, Shi Han, Dongmei Zhang

For node-level tasks, GNNs have strong power to model the homophily property of graphs (i. e., connected nodes are more similar) while their ability to capture the heterophily property is often doubtful.

Graph Attention

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