Search Results for author: Chongjun Wang

Found 20 papers, 8 papers with code

Understanding Data Augmentation from a Robustness Perspective

no code implementations7 Sep 2023 Zhendong Liu, Jie Zhang, Qiangqiang He, Chongjun Wang

In the realm of visual recognition, data augmentation stands out as a pivotal technique to amplify model robustness.

Data Augmentation

LaplaceConfidence: a Graph-based Approach for Learning with Noisy Labels

no code implementations31 Jul 2023 Mingcai Chen, Yuntao Du, Wei Tang, Baoming Zhang, Hao Cheng, Shuwei Qian, Chongjun Wang

We introduce LaplaceConfidence, a method that to obtain label confidence (i. e., clean probabilities) utilizing the Laplacian energy.

Dimensionality Reduction Learning with noisy labels

DOS: Diverse Outlier Sampling for Out-of-Distribution Detection

1 code implementation3 Jun 2023 Wenyu Jiang, Hao Cheng, Mingcai Chen, Chongjun Wang, Hongxin Wei

Modern neural networks are known to give overconfident prediction for out-of-distribution inputs when deployed in the open world.

Out-of-Distribution Detection

Symmetric Shape-Preserving Autoencoder for Unsupervised Real Scene Point Cloud Completion

no code implementations CVPR 2023 Changfeng Ma, Yinuo Chen, Pengxiao Guo, Jie Guo, Chongjun Wang, Yanwen Guo

Extensive experiments and comparisons demonstrate our superiority and generalization and show that our method achieves state-of-the-art performance on unsupervised completion of real scene objects.

Point Cloud Completion

MixBoost: Improving the Robustness of Deep Neural Networks by Boosting Data Augmentation

no code implementations8 Dec 2022 Zhendong Liu, Wenyu Jiang, Min Guo, Chongjun Wang

Based on the analysis of the internal mechanisms, we develop a mask-based boosting method for data augmentation that comprehensively improves several robustness measures of AI models and beats state-of-the-art data augmentation approaches.

Data Augmentation Explainable artificial intelligence +1

Spatial-Temporal Graph Convolutional Gated Recurrent Network for Traffic Forecasting

1 code implementation6 Oct 2022 Le Zhao, Mingcai Chen, Yuntao Du, Haiyang Yang, Chongjun Wang

We design an attention module to capture long-term dependency by mining periodic information in traffic data.

Explanation-based Counterfactual Retraining(XCR): A Calibration Method for Black-box Models

no code implementations22 Jun 2022 Liu Zhendong, Wenyu Jiang, Yi Zhang, Chongjun Wang

With the rapid development of eXplainable Artificial Intelligence (XAI), a long line of past work has shown concerns about the Out-of-Distribution (OOD) problem in perturbation-based post-hoc XAI models and explanations are socially misaligned.

counterfactual Explainable artificial intelligence +2

READ: Aggregating Reconstruction Error into Out-of-distribution Detection

no code implementations15 Jun 2022 Wenyu Jiang, Yuxin Ge, Hao Cheng, Mingcai Chen, Shuai Feng, Chongjun Wang

We propose a novel method, READ (Reconstruction Error Aggregated Detector), to unify inconsistencies from classifier and autoencoder.

Out-of-Distribution Detection Out of Distribution (OOD) Detection

Completing Partial Point Clouds with Outliers by Collaborative Completion and Segmentation

no code implementations18 Mar 2022 Changfeng Ma, Yang Yang, Jie Guo, Chongjun Wang, Yanwen Guo

We propose in this paper an end-to-end network, named CS-Net, to complete the point clouds contaminated by noises or containing outliers.

Point Cloud Completion Segmentation

Tailor Versatile Multi-modal Learning for Multi-label Emotion Recognition

1 code implementation15 Jan 2022 Yi Zhang, Mingyuan Chen, Jundong Shen, Chongjun Wang

Previous methods mainly focus on projecting multiple modalities into a common latent space and learning an identical representation for all labels, which neglects the diversity of each modality and fails to capture richer semantic information for each label from different perspectives.

Emotion Recognition

Generation, augmentation, and alignment: A pseudo-source domain based method for source-free domain adaptation

no code implementations9 Sep 2021 Yuntao Du, Haiyang Yang, Mingcai Chen, Juan Jiang, Hongtao Luo, Chongjun Wang

The proposed method firstly generates and augments the pseudo-source domain, and then employs distribution alignment with four novel losses based on pseudo-label based strategy.

Pseudo Label Source-Free Domain Adaptation +1

AdaRNN: Adaptive Learning and Forecasting of Time Series

2 code implementations10 Aug 2021 Yuntao Du, Jindong Wang, Wenjie Feng, Sinno Pan, Tao Qin, Renjun Xu, Chongjun Wang

This paper proposes Adaptive RNNs (AdaRNN) to tackle the TCS problem by building an adaptive model that generalizes well on the unseen test data.

Human Activity Recognition Time Series +1

Cross-domain error minimization for unsupervised domain adaptation

1 code implementation29 Jun 2021 Yuntao Du, Yinghao Chen, Fengli Cui, Xiaowen Zhang, Chongjun Wang

Unsupervised domain adaptation aims to transfer knowledge from a labeled source domain to an unlabeled target domain.

Unsupervised Domain Adaptation

Learning transferable and discriminative features for unsupervised domain adaptation

no code implementations26 Mar 2020 Yuntao Du, Ruiting Zhang, Xiaowen Zhang, Yirong Yao, Hengyang Lu, Chongjun Wang

In this paper, a novel method called \textit{learning TransFerable and Discriminative Features for unsupervised domain adaptation} (TFDF) is proposed to optimize these two objectives simultaneously.

Unsupervised Domain Adaptation

Dual Adversarial Domain Adaptation

1 code implementation1 Jan 2020 Yuntao Du, Zhiwen Tan, Qian Chen, Xiaowen Zhang, Yirong Yao, Chongjun Wang

Recent experiments have shown that when the discriminator is provided with domain information in both domains and label information in the source domain, it is able to preserve the complex multimodal information and high semantic information in both domains.

2k MULTI-VIEW LEARNING +1

Homogeneous Online Transfer Learning with Online Distribution Discrepancy Minimization

1 code implementation31 Dec 2019 Yuntao Du, Zhiwen Tan, Qian Chen, Yi Zhang, Chongjun Wang

In this paper, we propose a novel online transfer learning method which seeks to find a new feature representation, so that the marginal distribution and conditional distribution discrepancy can be online reduced simultaneously.

Transfer Learning

Many could be better than all: A novel instance-oriented algorithm for Multi-modal Multi-label problem

no code implementations27 Jul 2019 Yi Zhang, Cheng Zeng, Hao Cheng, Chongjun Wang, Lei Zhang

The quality of data collected from different channels are inconsistent and some of them may not benefit for prediction.

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