Search Results for author: Yu Lei

Found 35 papers, 8 papers with code

ZiGong 1.0: A Large Language Model for Financial Credit

no code implementations22 Feb 2025 Yu Lei, Zixuan Wang, Chu Liu, Tongyao Wang

Large Language Models (LLMs) have demonstrated strong performance across various general Natural Language Processing (NLP) tasks.

Hallucination Language Modeling +2

Correcting Large Language Model Behavior via Influence Function

no code implementations21 Dec 2024 Han Zhang, Zhuo Zhang, Yi Zhang, Yuanzhao Zhai, Hanyang Peng, Yu Lei, Yue Yu, Hui Wang, Bin Liang, Lin Gui, Ruifeng Xu

Recent advancements in AI alignment techniques have significantly improved the alignment of large language models (LLMs) with static human preferences.

Language Modeling Language Modelling +2

A Heterogeneous Graph Neural Network Fusing Functional and Structural Connectivity for MCI Diagnosis

no code implementations13 Nov 2024 Feiyu Yin, Yu Lei, Siyuan Dai, Wenwen Zeng, Guoqing Wu, Liang Zhan, Jinhua Yu

To address this issue, we propose a novel method that integrates functional and structural connectivity based on heterogeneous graph neural networks (HGNNs) to better leverage the rich heterogeneity in dual-modal images.

Data Augmentation Graph Neural Network

FairMindSim: Alignment of Behavior, Emotion, and Belief in Humans and LLM Agents Amid Ethical Dilemmas

no code implementations14 Oct 2024 Yu Lei, Hao liu, Chengxing Xie, Songjia Liu, Zhiyu Yin, Canyu Chen, Guohao Li, Philip Torr, Zhen Wu

To explore the various socioeconomic motivations, which we refer to as beliefs, that drive both humans and LLM agents as bystanders to intervene in unjust situations involving others, and how these beliefs interact to influence individual behavior, we incorporated knowledge from relevant sociological fields and proposed the Belief-Reward Alignment Behavior Evolution Model (BREM) based on the recursive reward model (RRM).

A Review of Human-Object Interaction Detection

no code implementations20 Aug 2024 Yuxiao Wang, Qiwei Xiong, Yu Lei, Weiying Xue, Qi Liu, Zhenao Wei

Human-object interaction (HOI) detection plays a key role in high-level visual understanding, facilitating a deep comprehension of human activities.

Human-Object Interaction Detection Object +3

PCLMix: Weakly Supervised Medical Image Segmentation via Pixel-Level Contrastive Learning and Dynamic Mix Augmentation

1 code implementation10 May 2024 Yu Lei, Haolun Luo, Lituan Wang, Zhenwei Zhang, Lei Zhang

In weakly supervised medical image segmentation, the absence of structural priors and the discreteness of class feature distribution present a challenge, i. e., how to accurately propagate supervision signals from local to global regions without excessively spreading them to other irrelevant regions?

Contrastive Learning Decoder +4

Knowledge-Aware Multi-Intent Contrastive Learning for Multi-Behavior Recommendation

no code implementations18 Apr 2024 Shunpan Liang, Junjie Zhao, Chen Li, Yu Lei

This model uses relationships in the knowledge graph to construct intents, aiming to mine the connections between users' multi-behaviors from the perspective of intents to achieve more accurate recommendations.

Contrastive Learning

CausalMed: Causality-Based Personalized Medication Recommendation Centered on Patient health state

1 code implementation18 Apr 2024 Xiang Li, Shunpan Liang, Yu Lei, Chen Li, Yulei Hou, Tengfei Ma

However, these methods are limited to capturing personalized patient representations due to the following primary limitations: (i) unable to capture the differences in the impact of diseases/procedures on patients across various patient health states; (ii) fail to model the direct causal relationships between medications and specific health state of patients, resulting in an inability to determine which specific disease each medication is treating.

Causal Discovery Causal Inference +1

High-Discriminative Attribute Feature Learning for Generalized Zero-Shot Learning

no code implementations7 Apr 2024 Yu Lei, Guoshuai Sheng, Fangfang Li, Quanxue Gao, Cheng Deng, Qin Li

However, current attention-based models may overlook the transferability of visual features and the distinctiveness of attribute localization when learning regional features in images.

Attribute Generalized Zero-Shot Learning

HDR Imaging for Dynamic Scenes with Events

no code implementations4 Apr 2024 Li Xiaopeng, Zeng Zhaoyuan, Fan Cien, Zhao Chen, Deng Lei, Yu Lei

High dynamic range imaging (HDRI) for real-world dynamic scenes is challenging because moving objects may lead to hybrid degradation of low dynamic range and motion blur.

Deblurring Self-Supervised Learning

Bayesian Diffusion Models for 3D Shape Reconstruction

1 code implementation CVPR 2024 Haiyang Xu, Yu Lei, Zeyuan Chen, Xiang Zhang, Yue Zhao, Yilin Wang, Zhuowen Tu

We present Bayesian Diffusion Models (BDM), a prediction algorithm that performs effective Bayesian inference by tightly coupling the top-down (prior) information with the bottom-up (data-driven) procedure via joint diffusion processes.

3D Reconstruction 3D Shape Reconstruction +1

FreeA: Human-object Interaction Detection using Free Annotation Labels

no code implementations4 Mar 2024 Qi Liu, Yuxiao Wang, Xinyu Jiang, Wolin Liang, Zhenao Wei, Yu Lei, Nan Zhuang, Weiying Xue

Recent human-object interaction (HOI) detection methods depend on extensively annotated image datasets, which require a significant amount of manpower.

Human-Object Interaction Detection Object

CIDGMed: Causal Inference-Driven Medication Recommendation with Enhanced Dual-Granularity Learning

2 code implementations1 Mar 2024 Shunpan Liang, Xiang Li, Shi Mu, Chen Li, Yu Lei, Yulei Hou, Tengfei Ma

Medication recommendation aims to integrate patients' long-term health records to provide accurate and safe medication combinations for specific health states.

Causal Inference Recommendation Systems +1

COPR: Continual Human Preference Learning via Optimal Policy Regularization

no code implementations22 Feb 2024 Han Zhang, Lin Gui, Yu Lei, Yuanzhao Zhai, Yehong Zhang, Yulan He, Hui Wang, Yue Yu, Kam-Fai Wong, Bin Liang, Ruifeng Xu

Reinforcement Learning from Human Feedback (RLHF) is commonly utilized to improve the alignment of Large Language Models (LLMs) with human preferences.

Continual Learning

TED-Net: Dispersal Attention for Perceiving Interaction Region in Indirectly-Contact HOI Detection

1 code implementation IEEE Transactions on Circuits and Systems for Video Technology 2024 Yuxiao Wang, Qi Liu, Yu Lei

Human-Object Interaction (HOI) detection is a fertile research ground that merits further investigation in computer vision, and plays an important role in image high-level semantic information understanding.

Human-Object Interaction Detection object-detection +1

CPPO: Continual Learning for Reinforcement Learning with Human Feedback

no code implementations Conference 2024 Han Zhang, Yu Lei, Lin Gui, Min Yang, Yulan He, Hui Wang, Ruifeng Xu

The approach of Reinforcement Learning from Human Feedback (RLHF) is widely used for enhancing pre-trained Language Models (LM), enabling them to better align with human preferences.

Continual Learning reinforcement-learning +1

Bayesian Exploration of Pre-trained Models for Low-shot Image Classification

no code implementations CVPR 2024 Yibo Miao, Yu Lei, Feng Zhou, Zhijie Deng

Low-shot image classification is a fundamental task in computer vision and the emergence of large-scale vision-language models such as CLIP has greatly advanced the forefront of research in this field.

Gaussian Processes Image Classification +1

Uncertainty-Penalized Reinforcement Learning from Human Feedback with Diverse Reward LoRA Ensembles

no code implementations30 Dec 2023 Yuanzhao Zhai, Han Zhang, Yu Lei, Yue Yu, Kele Xu, Dawei Feng, Bo Ding, Huaimin Wang

Reinforcement learning from human feedback (RLHF) emerges as a promising paradigm for aligning large language models (LLMs).

Uncertainty Quantification

COPR: Continual Learning Human Preference through Optimal Policy Regularization

no code implementations24 Oct 2023 Han Zhang, Lin Gui, Yuanzhao Zhai, Hui Wang, Yu Lei, Ruifeng Xu

The technique of Reinforcement Learning from Human Feedback (RLHF) is a commonly employed method to improve pre-trained Language Models (LM), enhancing their ability to conform to human preferences.

Continual Learning reinforcement-learning +1

FocalDreamer: Text-driven 3D Editing via Focal-fusion Assembly

no code implementations21 Aug 2023 Yuhan Li, Yishun Dou, Yue Shi, Yu Lei, Xuanhong Chen, Yi Zhang, Peng Zhou, Bingbing Ni

While text-3D editing has made significant strides in leveraging score distillation sampling, emerging approaches still fall short in delivering separable, precise and consistent outcomes that are vital to content creation.

A Lower Bound of Hash Codes' Performance

1 code implementation12 Oct 2022 Xiaosu Zhu, Jingkuan Song, Yu Lei, Lianli Gao, Heng Tao Shen

By testing on a series of hash-models, we obtain performance improvements among all of them, with an up to $26. 5\%$ increase in mean Average Precision and an up to $20. 5\%$ increase in accuracy.

Metric Learning Representation Learning

A Multi-Channel Next POI Recommendation Framework with Multi-Granularity Check-in Signals

1 code implementation1 Sep 2022 Zhu Sun, Yu Lei, Lu Zhang, Chen Li, Yew-Soon Ong, Jie Zhang

Being equipped with three modules (i. e., global user behavior encoder, local multi-channel encoder, and region-aware weighting strategy), MCMG is capable of capturing both fine- and coarse-grained sequential regularities as well as exploring the dynamic impact of multi-channel by differentiating the region check-in patterns.

Multi-Faceted Hierarchical Multi-Task Learning for a Large Number of Tasks with Multi-dimensional Relations

no code implementations26 Oct 2021 Junning Liu, Zijie Xia, Yu Lei, Xinjian Li, Xu Wang

For example, when using MTL to model various user behaviors in RS, if we differentiate new users and new items from old ones, there will be a cartesian product style increase of tasks with multi-dimensional relations.

Multi-Task Learning Recommendation Systems

Capsule Graph Neural Networks with EM Routing

no code implementations18 Oct 2021 Yu Lei, Jing Zhang

To effectively classify graph instances, graph neural networks need to have the capability to capture the part-whole relationship existing in a graph.

Graph Classification

Self-adaptive Multi-task Particle Swarm Optimization

no code implementations9 Oct 2021 Xiaolong Zheng, Deyun Zhou, Na Li, Yu Lei, Tao Wu, Maoguo Gong

In the focus search strategy, if there is no knowledge source benefit the optimization of a task, then all knowledge sources in the task's pool are forbidden to be utilized except the task, which helps to improve the performance of the proposed algorithm.

Evolutionary Algorithms Transfer Learning

Physical Artificial Intelligence: The Concept Expansion of Next-Generation Artificial Intelligence

no code implementations13 May 2021 Yingbo Li, Yucong Duan, Anamaria-Beatrice Spulber, Haoyang Che, Zakaria Maamar, Zhao Li, Chen Yang, Yu Lei

In this paper we explore the concept of Physicial Artifical Intelligence and propose two subdomains: Integrated Physicial Artifical Intelligence and Distributed Physicial Artifical Intelligence.

Geom-GCN: Geometric Graph Convolutional Networks

4 code implementations ICLR 2020 Hongbin Pei, Bingzhe Wei, Kevin Chen-Chuan Chang, Yu Lei, Bo Yang

From the observations on classical neural network and network geometry, we propose a novel geometric aggregation scheme for graph neural networks to overcome the two weaknesses.

Node Classification on Non-Homophilic (Heterophilic) Graphs Representation Learning +1

When Collaborative Filtering Meets Reinforcement Learning

no code implementations2 Feb 2019 Yu Lei, Wenjie Li

In this paper, we study a multi-step interactive recommendation problem, where the item recommended at current step may affect the quality of future recommendations.

Collaborative Filtering Interactive Recommendation +3

Generative Steganography by Sampling

no code implementations26 Apr 2018 Jia Liu, Yu Lei, Yan Ke, Jun Li, Min-qing Zhang, Xiaoyuan Yan

In this paper, a new data-driven information hiding scheme called generative steganography by sampling (GSS) is proposed.

Image Inpainting

Semi-supervised Multimodal Hashing

no code implementations9 Dec 2017 Dayong Tian, Maoguo Gong, Deyun Zhou, Jiao Shi, Yu Lei

As unsupervised multimodal hashing methods are usually inferior to supervised ones, while the supervised ones requires too much manually labeled data, the proposed method in this paper utilizes a part of labels to design a semi-supervised multimodal hashing method.

TAG

Content-based Influence Modeling for Opinion Behavior Prediction

no code implementations COLING 2016 Chengyao Chen, Zhitao Wang, Yu Lei, Wenjie Li

The advantages of the proposed model is the ability to handle the semantic information and to learn two influence components including the opinion influence of the content information and the social relation factors.

Prediction

Cannot find the paper you are looking for? You can Submit a new open access paper.