Search Results for author: Guangyong Chen

Found 50 papers, 19 papers with code

LLM-Assisted Multi-Teacher Continual Learning for Visual Question Answering in Robotic Surgery

no code implementations26 Feb 2024 Kexin Chen, Yuyang Du, Tao You, Mobarakol Islam, Ziyu Guo, Yueming Jin, Guangyong Chen, Pheng-Ann Heng

We further design an adaptive weight assignment approach that balances the generalization ability of the LLM and the domain expertise of the old CL model.

Continual Learning Language Modelling +3

An Autonomous Large Language Model Agent for Chemical Literature Data Mining

no code implementations20 Feb 2024 Kexin Chen, Hanqun Cao, Junyou Li, Yuyang Du, Menghao Guo, Xin Zeng, Lanqing Li, Jiezhong Qiu, Pheng Ann Heng, Guangyong Chen

The proposed approach marks a significant advancement in automating chemical literature extraction and demonstrates the potential for AI to revolutionize data management and utilization in chemistry.

Drug Discovery Language Modelling +2

Decompose and Realign: Tackling Condition Misalignment in Text-to-Image Diffusion Models

1 code implementation26 Jun 2023 Luozhou Wang, Guibao Shen, Wenhang Ge, Guangyong Chen, Yijun Li, Ying-Cong Chen

The ``Decompose'' phase separates conditions based on pair relationships, computing the result individually for each pair.

Image Generation

Adaptive Negative Evidential Deep Learning for Open-set Semi-supervised Learning

1 code implementation21 Mar 2023 Yang Yu, Danruo Deng, Furui Liu, Yueming Jin, Qi Dou, Guangyong Chen, Pheng-Ann Heng

Open-set semi-supervised learning (Open-set SSL) considers a more practical scenario, where unlabeled data and test data contain new categories (outliers) not observed in labeled data (inliers).

Outlier Detection

Traj-MAE: Masked Autoencoders for Trajectory Prediction

no code implementations ICCV 2023 Hao Chen, Jiaze Wang, Kun Shao, Furui Liu, Jianye Hao, Chenyong Guan, Guangyong Chen, Pheng-Ann Heng

Specifically, our Traj-MAE employs diverse masking strategies to pre-train the trajectory encoder and map encoder, allowing for the capture of social and temporal information among agents while leveraging the effect of environment from multiple granularities.

Autonomous Driving Trajectory Prediction

PointPatchMix: Point Cloud Mixing with Patch Scoring

no code implementations12 Mar 2023 Yi Wang, Jiaze Wang, Jinpeng Li, Zixu Zhao, Guangyong Chen, Anfeng Liu, Pheng-Ann Heng

With Point-MAE as our baseline, our model surpasses previous methods by a significant margin, achieving 86. 3% accuracy on ScanObjectNN and 94. 1% accuracy on ModelNet40.

Data Augmentation

Uncertainty Estimation by Fisher Information-based Evidential Deep Learning

1 code implementation3 Mar 2023 Danruo Deng, Guangyong Chen, Yang Yu, Furui Liu, Pheng-Ann Heng

To address this problem, we propose a novel method, Fisher Information-based Evidential Deep Learning ($\mathcal{I}$-EDL).

Informativeness Representation Learning

RepMode: Learning to Re-parameterize Diverse Experts for Subcellular Structure Prediction

1 code implementation CVPR 2023 Donghao Zhou, Chunbin Gu, Junde Xu, Furui Liu, Qiong Wang, Guangyong Chen, Pheng-Ann Heng

In biological research, fluorescence staining is a key technique to reveal the locations and morphology of subcellular structures.

G-MAP: General Memory-Augmented Pre-trained Language Model for Domain Tasks

1 code implementation7 Dec 2022 Zhongwei Wan, Yichun Yin, Wei zhang, Jiaxin Shi, Lifeng Shang, Guangyong Chen, Xin Jiang, Qun Liu

Recently, domain-specific PLMs have been proposed to boost the task performance of specific domains (e. g., biomedical and computer science) by continuing to pre-train general PLMs with domain-specific corpora.

General Knowledge Language Modelling +3

Spatio-Temporal Contrastive Learning Enhanced GNNs for Session-based Recommendation

1 code implementation23 Sep 2022 Zhongwei Wan, Xin Liu, Benyou Wang, Jiezhong Qiu, Boyu Li, Ting Guo, Guangyong Chen, Yang Wang

The idea is to supplement the GNN-based main supervised recommendation task with the temporal representation via an auxiliary cross-view contrastive learning mechanism.

Collaborative Filtering Contrastive Learning +1

Multi-Task Mixture Density Graph Neural Networks for Predicting Cu-based Single-Atom Alloy Catalysts for CO2 Reduction Reaction

no code implementations15 Sep 2022 Chen Liang, Bowen Wang, Shaogang Hao, Guangyong Chen, Pheng-Ann Heng, Xiaolong Zou

Graph neural networks (GNNs) have drawn more and more attention from material scientists and demonstrated a high capacity to establish connections between the structure and properties.

A Survey on Generative Diffusion Model

1 code implementation6 Sep 2022 Hanqun Cao, Cheng Tan, Zhangyang Gao, Yilun Xu, Guangyong Chen, Pheng-Ann Heng, Stan Z. Li

Deep generative models are a prominent approach for data generation, and have been used to produce high quality samples in various domains.

Dimensionality Reduction

MetaRF: Differentiable Random Forest for Reaction Yield Prediction with a Few Trails

no code implementations22 Aug 2022 Kexin Chen, Guangyong Chen, Junyou Li, Yuansheng Huang, Pheng-Ann Heng

In high-throughput experimentation (HTE) datasets, the average yield of our methodology's top 10 high-yield reactions is relatively close to the results of ideal yield selection.

Dimensionality Reduction Few-Shot Learning

Pseudo-label Guided Cross-video Pixel Contrast for Robotic Surgical Scene Segmentation with Limited Annotations

no code implementations20 Jul 2022 Yang Yu, Zixu Zhao, Yueming Jin, Guangyong Chen, Qi Dou, Pheng-Ann Heng

Concretely, for trusty representation learning, we propose to incorporate pseudo labels to instruct the pair selection, obtaining more reliable representation pairs for pixel contrast.

Pseudo Label Representation Learning +2

Explore More Guidance: A Task-aware Instruction Network for Sign Language Translation Enhanced with Data Augmentation

1 code implementation Findings (NAACL) 2022 Yong Cao, Wei Li, Xianzhi Li, Min Chen, Guangyong Chen, Long Hu, Zhengdao Li, Hwang Kai

Sign language recognition and translation first uses a recognition module to generate glosses from sign language videos and then employs a translation module to translate glosses into spoken sentences.

Data Augmentation Sign Language Recognition +2

Acknowledging the Unknown for Multi-label Learning with Single Positive Labels

1 code implementation30 Mar 2022 Donghao Zhou, Pengfei Chen, Qiong Wang, Guangyong Chen, Pheng-Ann Heng

Due to the difficulty of collecting exhaustive multi-label annotations, multi-label datasets often contain partial labels.

Multi-Label Learning Weakly-supervised Learning

Flattening Sharpness for Dynamic Gradient Projection Memory Benefits Continual Learning

1 code implementation NeurIPS 2021 Danruo Deng, Guangyong Chen, Jianye Hao, Qiong Wang, Pheng-Ann Heng

The backpropagation networks are notably susceptible to catastrophic forgetting, where networks tend to forget previously learned skills upon learning new ones.

Continual Learning

Balancing Accuracy and Fairness for Interactive Recommendation with Reinforcement Learning

no code implementations25 Jun 2021 Weiwen Liu, Feng Liu, Ruiming Tang, Ben Liao, Guangyong Chen, Pheng Ann Heng

Fairness in recommendation has attracted increasing attention due to bias and discrimination possibly caused by traditional recommenders.

Fairness Recommendation Systems +2

Noise against noise: stochastic label noise helps combat inherent label noise

no code implementations ICLR 2021 Pengfei Chen, Guangyong Chen, Junjie Ye, Jingwei Zhao, Pheng-Ann Heng

The noise in stochastic gradient descent (SGD) provides a crucial implicit regularization effect, previously studied in optimization by analyzing the dynamics of parameter updates.

Learning with noisy labels

Beyond Class-Conditional Assumption: A Primary Attempt to Combat Instance-Dependent Label Noise

1 code implementation10 Dec 2020 Pengfei Chen, Junjie Ye, Guangyong Chen, Jingwei Zhao, Pheng-Ann Heng

In this work, we present a theoretical hypothesis testing and prove that noise in real-world dataset is unlikely to be CCN, which confirms that label noise should depend on the instance and justifies the urgent need to go beyond the CCN assumption. The theoretical results motivate us to study the more general and practical-relevant instance-dependent noise (IDN).

Image Classification

Robustness of Accuracy Metric and its Inspirations in Learning with Noisy Labels

1 code implementation8 Dec 2020 Pengfei Chen, Junjie Ye, Guangyong Chen, Jingwei Zhao, Pheng-Ann Heng

For validation, we prove that a noisy validation set is reliable, addressing the critical demand of model selection in scenarios like hyperparameter-tuning and early stopping.

Learning with noisy labels Model Selection +1

A Rotation-Invariant Framework for Deep Point Cloud Analysis

1 code implementation16 Mar 2020 Xianzhi Li, Ruihui Li, Guangyong Chen, Chi-Wing Fu, Daniel Cohen-Or, Pheng-Ann Heng

Recently, many deep neural networks were designed to process 3D point clouds, but a common drawback is that rotation invariance is not ensured, leading to poor generalization to arbitrary orientations.

Point Cloud Generation Retrieval

Towards Disentangling Non-Robust and Robust Components in Performance Metric

no code implementations25 Sep 2019 Yujun Shi, Benben Liao, Guangyong Chen, Yun Liu, Ming-Ming Cheng, Jiashi Feng

Then, we show by experiments that DNNs under standard training rely heavily on optimizing the non-robust component in achieving decent performance.

Adversarial Robustness Relation

PMD: An Optimal Transportation-based User Distance for Recommender Systems

no code implementations10 Sep 2019 Yitong Meng, Xinyan Dai, Xiao Yan, James Cheng, Weiwen Liu, Benben Liao, Jun Guo, Guangyong Chen

Collaborative filtering, a widely-used recommendation technique, predicts a user's preference by aggregating the ratings from similar users.

Collaborative Filtering Recommendation Systems

Wasserstein Collaborative Filtering for Item Cold-start Recommendation

no code implementations10 Sep 2019 Yitong Meng, Guangyong Chen, Benben Liao, Jun Guo, Weiwen Liu

We further adopt the idea of CF and propose Wasserstein CF (WCF) to improve the recommendation performance on cold-start items.

Collaborative Filtering

Spectral-based Graph Convolutional Network for Directed Graphs

no code implementations21 Jul 2019 Yi Ma, Jianye Hao, Yaodong Yang, Han Li, Junqi Jin, Guangyong Chen

Our approach can work directly on directed graph data in semi-supervised nodes classification tasks.

A Meta Approach to Defend Noisy Labels by the Manifold Regularizer PSDR

no code implementations13 Jun 2019 Pengfei Chen, Benben Liao, Guangyong Chen, Shengyu Zhang

Most recent efforts have been devoted to defending noisy labels by discarding noisy samples from the training set or assigning weights to training samples, where the weight associated with a noisy sample is expected to be small.

Data Augmentation

Utilizing Edge Features in Graph Neural Networks via Variational Information Maximization

no code implementations13 Jun 2019 Pengfei Chen, Weiwen Liu, Chang-Yu Hsieh, Guangyong Chen, Shengyu Zhang

The IGNN model is based on an elegant and fundamental idea in information theory as explained in the main text, and it could be easily generalized beyond the contexts of molecular graphs considered in this work.

Drug Discovery Quantum Chemistry Regression

Understanding Adversarial Behavior of DNNs by Disentangling Non-Robust and Robust Components in Performance Metric

no code implementations6 Jun 2019 Yujun Shi, Benben Liao, Guangyong Chen, Yun Liu, Ming-Ming Cheng, Jiashi Feng

Despite many previous works studying the reason behind such adversarial behavior, the relationship between the generalization performance and adversarial behavior of DNNs is still little understood.

Adversarial Robustness

Rethinking the Usage of Batch Normalization and Dropout in the Training of Deep Neural Networks

1 code implementation15 May 2019 Guangyong Chen, Pengfei Chen, Yujun Shi, Chang-Yu Hsieh, Benben Liao, Shengyu Zhang

Our work is based on an excellent idea that whitening the inputs of neural networks can achieve a fast convergence speed.

Understanding and Utilizing Deep Neural Networks Trained with Noisy Labels

3 code implementations13 May 2019 Pengfei Chen, Benben Liao, Guangyong Chen, Shengyu Zhang

Noisy labels are ubiquitous in real-world datasets, which poses a challenge for robustly training deep neural networks (DNNs) as DNNs usually have the high capacity to memorize the noisy labels.

Image Classification

Log Hyperbolic Cosine Loss Improves Variational Auto-Encoder

no code implementations27 Sep 2018 Pengfei Chen, Guangyong Chen, Shengyu Zhang

In Variational Auto-Encoder (VAE), the default choice of reconstruction loss function between the decoded sample and the input is the squared $L_2$.

Sentence

Cascaded Feature Network for Semantic Segmentation of RGB-D Images

no code implementations ICCV 2017 Di Lin, Guangyong Chen, Daniel Cohen-Or, Pheng-Ann Heng, Hui Huang

Our approach is to use the available depth to split the image into layers with common visual characteristic of objects/scenes, or common "scene-resolution".

Semantic Segmentation

Learning to Aggregate Ordinal Labels by Maximizing Separating Width

no code implementations ICML 2017 Guangyong Chen, Shengyu Zhang, Di Lin, Hui Huang, Pheng Ann Heng

While crowdsourcing has been a cost and time efficient method to label massive samples, one critical issue is quality control, for which the key challenge is to infer the ground truth from noisy or even adversarial data by various users.

From Noise Modeling to Blind Image Denoising

no code implementations CVPR 2016 Fengyuan Zhu, Guangyong Chen, Pheng-Ann Heng

This paper addresses this problem and proposes a novel blind image denoising algorithm which can cope with real-world noisy images even when the noise model is not provided.

Image Denoising

Blind Image Denoising via Dependent Dirichlet Process Tree

no code implementations13 Jan 2016 Fengyuan Zhu, Guangyong Chen, Jianye Hao, Pheng-Ann Heng

This paper addresses this problem and proposes a novel blind image denoising algorithm to recover the clean image from noisy one with the unknown noise model.

Image Denoising Variational Inference

Online Prediction of Dyadic Data with Heterogeneous Matrix Factorization

no code implementations13 Jan 2016 Guangyong Chen, Fengyuan Zhu, Pheng Ann Heng

We further develop a novel online learning approach for Variational inference and use it for the online learning of HeMF, which can efficiently cope with the important large-scale DDP problem.

Collaborative Filtering Variational Inference

An Efficient Statistical Method for Image Noise Level Estimation

no code implementations ICCV 2015 Guangyong Chen, Fengyuan Zhu, Pheng Ann Heng

In this paper, we address the problem of estimating noise level from a single image contaminated by additive zero-mean Gaussian noise.

Denoising Noise Estimation

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