no code implementations • WASSA (ACL) 2022 • Hao Lin, Pradeep Nalluri, Lantian Li, Yifan Sun, Yongjun Zhang
We introduce new datasets from Twitter related to anti-Asian hate sentiment before and during the pandemic.
no code implementations • 5 Sep 2023 • Ruixuan Liu, Yifan Sun, Changliu Liu
LEGO is a well-known platform for prototyping pixelized objects.
no code implementations • 17 Jul 2023 • Lu Yang, Liulei Li, Xueshi Xin, Yifan Sun, Qing Song, Wenguan Wang
Instead of existing efforts devoted to localizing tourist photos captured by perspective cameras, in this article, we focus on devising person positioning solutions using overhead fisheye cameras.
1 code implementation • 21 Jun 2023 • WeiYe Zhao, Rui Chen, Yifan Sun, Tianhao Wei, Changliu Liu
In particular, we introduce the framework of Maximum Markov Decision Process, and prove that the worst-case safety violation is bounded under SCPO.
no code implementations • 29 May 2023 • Jiaxin Lu, Yifan Sun, QiXing Huang
To the best of our knowledge, this is the first learning-based method designed specifically for 3D fracture assembly over multiple pieces.
1 code implementation • 28 May 2023 • Wenjie Zhuo, Yifan Sun, Xiaohan Wang, Linchao Zhu, Yi Yang
Consequently, using multiple positive samples with enhanced diversity further improves contrastive learning due to better alignment.
1 code implementation • 25 May 2023 • Baojian Zhou, Yifan Sun, Reza Babanezhad
This paper studies the online node classification problem under a transductive learning setting.
1 code implementation • 23 May 2023 • WeiYe Zhao, Rui Chen, Yifan Sun, Ruixuan Liu, Tianhao Wei, Changliu Liu
Due to the diversity of algorithms and tasks, it remains difficult to compare existing safe RL algorithms.
no code implementations • 17 May 2023 • Yushen Huang, Ertai Luo, Stanley Bak, Yifan Sun
The standard method for intersection checking with polynomial zonotopes is a two-part algorithm that overapproximates a polynomial zonotope with a regular zonotope and then, if the overapproximation error is deemed too large, splits the set and recursively tries again.
2 code implementations • 20 Apr 2023 • Wenhao Wang, Yifan Sun, Yi Yang
Video Copy Detection (VCD) has been developed to identify instances of unauthorized or duplicated video content.
no code implementations • CVPR 2023 • Zongheng Tang, Yifan Sun, Si Liu, Yi Yang
Second, through our design, the object queries and the foreground query in the decoder share consensus on the class semantics, therefore making the strong and weak supervision mutually benefit each other for domain alignment.
no code implementations • 13 Apr 2023 • Wenhao Wang, Yifan Sun, Wei Li, Yi Yang
This paper explores a hierarchical prompting mechanism for the hierarchical image classification (HIC) task.
no code implementations • 4 Apr 2023 • Zhaoyue Chen, Yifan Sun
The Frank-Wolfe algorithm is a popular method in structurally constrained machine learning applications, due to its fast per-iteration complexity.
1 code implementation • 18 Mar 2023 • Fanglei Xue, Yifan Sun, Yi Yang
This paper explores an expression-related self-supervised learning (SSL) method (ContraWarping) to perform expression classification in the 5th Affective Behavior Analysis in-the-wild (ABAW) competition.
1 code implementation • 17 Mar 2023 • Qiankun Gao, Chen Zhao, Yifan Sun, Teng Xi, Gang Zhang, Bernard Ghanem, Jian Zhang
1) Learning: the pre-trained model adapts to the new task by tuning an online PET module, along with our adaptation speed calibration to align different PET modules, 2) Accumulation: the task-specific knowledge learned by the online PET module is accumulated into an offline PET module through momentum update, 3) Ensemble: During inference, we respectively construct two experts with online/offline PET modules (which are favored by the novel/historical tasks) for prediction ensemble.
1 code implementation • 16 Mar 2023 • Fanglei Xue, Yifan Sun, Yi Yang
Therefore, given a facial image, ContraWarping employs some global transformations and local warping to generate its positive and negative samples and sets up a novel contrastive learning framework.
1 code implementation • 7 Feb 2023 • Yifan Sun, Jingyan Shen, Yunfan Jiang, Zhaohui Huang, Minsheng Hao, Xuegong Zhang
The automatic detection of atrial fibrillation based on electrocardiograph (ECG) signals has received wide attention both clinically and practically.
no code implementations • CVPR 2023 • Tianyi Ma, Yifan Sun, Zongxin Yang, Yi Yang
Based on these two common practices, the key point of ProD is using the prompting mechanism in the transformer to disentangle the domain-general (DG) and domain-specific (DS) knowledge from the backbone feature.
1 code implementation • CVPR 2023 • Chao Wang, Zhedong Zheng, Ruijie Quan, Yifan Sun, Yi Yang
(2) The conventional paradigm usually focuses on mining the abnormal pattern of a superimposed image to separate the noise, which de facto conflicts with the primary image restoration task.
no code implementations • CVPR 2023 • Yifan Sun, QiXing Huang
The first step performs diffusion and clustering to compute the candidate poses of the input objects.
1 code implementation • 28 Nov 2022 • Xue Yu, Yifan Sun, HaiJun Zhou
High-dimensional linear regression model is the most popular statistical model for high-dimensional data, but it is quite a challenging task to achieve a sparse set of regression coefficients.
no code implementations • 28 Nov 2022 • Yuzhao Zhang, Yifan Sun
Motivated by the idea of semisoft clustering of data, we propose a semisoft task clustering approach, which can simultaneously reveal the task cluster structure for both pure and mixed tasks as well as select the relevant features.
1 code implementation • 8 Nov 2022 • Xue Yu, Ziyi Liu, Wu Wang, Yifan Sun
We propose a clustered FL framework that incorporates a nonconvex penalty to pairwise differences of parameters.
no code implementations • 7 Nov 2022 • Zhongdao Wang, Zhaopeng Dou, Jingwei Zhang, Liang Zheng, Yifan Sun, YaLi Li, Shengjin Wang
In this paper, we are interested in learning a generalizable person re-identification (re-ID) representation from unlabeled videos.
Domain Generalization
Generalizable Person Re-identification
+1
no code implementations • 14 Oct 2022 • Zhaoyue Chen, Yifan Sun
The Frank-Wolfe algorithm has regained much interest in its use in structurally constrained machine learning applications.
2 code implementations • 13 Oct 2022 • Jian-Wei Zhang, Yifan Sun, Yi Yang, Wei Chen
With a rethink of recent advances, we find that the current FSS framework has deviated far from the supervised segmentation framework: Given the deep features, FSS methods typically use an intricate decoder to perform sophisticated pixel-wise matching, while the supervised segmentation methods use a simple linear classification head.
1 code implementation • 26 Jul 2022 • Wenhao Wang, Yifan Sun, Zongxin Yang, Yi Yang
While model ensemble is common, we show that combining the vision models and vision-language models brings particular benefits from their complementarity and is a key factor to our superiority.
1 code implementation • 21 Jul 2022 • Teng Xi, Yifan Sun, Deli Yu, Bi Li, Nan Peng, Gang Zhang, Xinyu Zhang, Zhigang Wang, Jinwen Chen, Jian Wang, Lufei Liu, Haocheng Feng, Junyu Han, Jingtuo Liu, Errui Ding, Jingdong Wang
UFO aims to benefit each single task with a large-scale pretraining on all tasks.
2 code implementations • 29 Jun 2022 • Yining Shi, Jingyan Shen, Yifan Sun, Yunlong Wang, Jiaxin Li, Shiqi Sun, Kun Jiang, Diange Yang
Our novel sparse feature sampling module only utilizes local 2D region of interest (RoI) features calculated by the projection of 3D query boxes for further box refinement, leading to a fully-convolutional and deployment-friendly pipeline.
Ranked #8 on
Robust Camera Only 3D Object Detection
on nuScenes-C
no code implementations • 24 May 2022 • Zhaoyue Chen, Yifan Sun
The Frank-Wolfe method is a popular method in sparse constrained optimization, due to its fast per-iteration complexity.
no code implementations • 24 May 2022 • Xueying Bai, Jinghuan Shang, Yifan Sun, Niranjan Balasubramanian
Continual learning (CL) aims to learn a sequence of tasks over time, with data distributions shifting from one task to another.
1 code implementation • 24 May 2022 • Wenhao Wang, Yifan Sun, Yi Yang
Moreover, this paper further reveals a unique difficulty for solving the hard negative problem in ICD, i. e., there is a fundamental conflict between current metric learning and ICD.
1 code implementation • 3 Mar 2022 • Yongxing Dai, Yifan Sun, Jun Liu, Zekun Tong, Yi Yang, Ling-Yu Duan
Instead of directly aligning the source and target domains against each other, we propose to align the source and target domains against their intermediate domains for a smooth knowledge transfer.
no code implementations • 8 Feb 2022 • Zoë Papakipos, Giorgos Tolias, Tomas Jenicek, Ed Pizzi, Shuhei Yokoo, Wenhao Wang, Yifan Sun, Weipu Zhang, Yi Yang, Sanjay Addicam, Sergio Manuel Papadakis, Cristian Canton Ferrer, Ondrej Chum, Matthijs Douze
The 2021 Image Similarity Challenge introduced a dataset to serve as a new benchmark to evaluate recent image copy detection methods.
no code implementations • 17 Jan 2022 • Xu Chen, Yahong Han, Xiaohan Wang, Yifan Sun, Yi Yang
An effective approach is to select informative content from the holistic video, yielding a popular family of dynamic video recognition methods.
Ranked #40 on
Action Recognition
on Something-Something V1
no code implementations • CVPR 2022 • Jialun Liu, Yifan Sun, Feng Zhu, Hongbin Pei, Yi Yang, Wenhui Li
These two unidirectional metrics (IR image to RGB proxy and RGB image to IR proxy) jointly alleviate the relay effect and benefit cross-modality association.
Cross-Modality Person Re-identification
Person Re-Identification
1 code implementation • CVPR 2022 • Yunqiu Xu, Yifan Sun, Zongxin Yang, Jiaxu Miao, Yi Yang
How to align the source and target domains is critical to the CDWSOD accuracy.
Ranked #1 on
Weakly Supervised Object Detection
on Clipart1k
1 code implementation • 15 Dec 2021 • Zongheng Huang, Yifan Sun, Chuchu Han, Changxin Gao, Nong Sang
By combining two fundamental learning approaches in DML, e. g., classification training and pairwise training, we set up a strong baseline for ZS-SBIR.
1 code implementation • 1 Dec 2021 • Kai Zhang, Yifan Sun, Rui Wang, Haichang Li, Xiaohui Hu
MFA basically considers three parallel information fusion strategies, i. e., the cross-model fusion, temporal fusion and a novel online-offline pseudo label fusion.
1 code implementation • 13 Nov 2021 • Wenhao Wang, Yifan Sun, Weipu Zhang, Yi Yang
In this paper, a data-driven and local-verification (D$^2$LV) approach is proposed to compete for Image Similarity Challenge: Matching Track at NeurIPS'21.
1 code implementation • 13 Nov 2021 • Wenhao Wang, Weipu Zhang, Yifan Sun, Yi Yang
In this paper, a bag of tricks and a strong baseline are proposed for image copy detection.
1 code implementation • NeurIPS 2021 • Tengteng Huang, Yifan Sun, Xun Wang, Haotian Yao, Chi Zhang
Model smoothing is of central importance for obtaining a reliable teacher model in the student-teacher framework, where the teacher generates surrogate supervision signals to train the student.
no code implementations • ICLR 2022 • Zhengdong Hu, Yifan Sun, Yi Yang
We hold a hypothesis, i. e., if a deep model is capable to fast generalize itself to different domains (using very few samples) during training, it will maintain such domain generalization capacity for testing.
3 code implementations • ICCV 2021 • Yongxing Dai, Jun Liu, Yifan Sun, Zekun Tong, Chi Zhang, Ling-Yu Duan
To ensure these two properties to better characterize appropriate intermediate domains, we enforce the bridge losses on intermediate domains' prediction space and feature space, and enforce a diversity loss on the two domain factors.
Domain Adaptive Person Re-Identification
Person Re-Identification
no code implementations • 2 Jul 2021 • Yifan Sun, Francis Bach
We couple this with a screening rule which is safe in the convex case, converging to the true support at a rate $O(1/(\delta^2))$ where $\delta \geq 0$ measures how close the problem is to degeneracy.
1 code implementation • 29 Jun 2021 • Baojian Zhou, Yifan Sun
In this paper, we consider approximate Frank-Wolfe (FW) algorithms to solve convex optimization problems over graph-structured support sets where the linear minimization oracle (LMO) cannot be efficiently obtained in general.
no code implementations • CVPR 2021 • Yifan Sun, QiXing Huang, Dun-Yu Hsiao, Li Guan, Gang Hua
Efficient 3D space sampling to represent an underlying3D object/scene is essential for 3D vision, robotics, and be-yond.
1 code implementation • CVPR 2021 • Yifan Sun, Yuke Zhu, Yuhan Zhang, Pengkun Zheng, Xi Qiu, Chi Zhang, Yichen Wei
%We argue that such flexibility is also important for deep metric learning, because different visual concepts indeed correspond to different semantic scales.
Ranked #2 on
Metric Learning
on DyML-Animal
no code implementations • 24 Nov 2020 • Xiangyu Niu, Yifan Sun, Jinyuan Sun
In multi-task learning (MTL), we improve the performance of key machine learning algorithms by training various tasks jointly.
no code implementations • 22 Aug 2020 • Jialun Liu, Jingwei Zhang, Yi Yang, Wenhui Li, Chi Zhang, Yifan Sun
With slight modifications, MBJ is applicable for two fundamental visual recognition tasks, \emph{i. e.}, deep image classification and deep metric learning (on long-tailed data).
Ranked #39 on
Long-tail Learning
on CIFAR-100-LT (ρ=100)
no code implementations • ECCV 2020 • Zhongdao Wang, Jingwei Zhang, Liang Zheng, Yixuan Liu, Yifan Sun, Ya-Li Li, Shengjin Wang
This paper proposes a self-supervised learning method for the person re-identification (re-ID) problem, where existing unsupervised methods usually rely on pseudo labels, such as those from video tracklets or clustering.
no code implementations • 20 Jun 2020 • Yifan Sun, Xihong Wu
The proposed approach works in an analysis-by-synthesis manner to learn an inference network by iteratively sampling and training.
10 code implementations • CVPR 2020 • Yifan Sun, Changmao Cheng, Yuhan Zhang, Chi Zhang, Liang Zheng, Zhongdao Wang, Yichen Wei
This paper provides a pair similarity optimization viewpoint on deep feature learning, aiming to maximize the within-class similarity $s_p$ and minimize the between-class similarity $s_n$.
Ranked #1 on
Face Verification
on IJB-C
(training dataset metric)
no code implementations • CVPR 2020 • Jialun Liu, Yifan Sun, Chuchu Han, Zhaopeng Dou, Wenhui Li
If a sample belongs to a tail class, the corresponding feature cloud will have relatively large distribution range, in compensation to its lack of diversity.
no code implementations • 22 Feb 2020 • Yifan Sun, Francis Bach
The conditional gradient method (CGM) has been widely used for fast sparse approximation, having a low per iteration computational cost for structured sparse regularizers.
no code implementations • ICCV 2019 • Ruihang Chu, Yifan Sun, Yadong Li, Zheng Liu, Chi Zhang, Yichen Wei
This paper considers vehicle re-identification (re-ID) problem.
no code implementations • ICCV 2019 • Yifan Sun, Jiacheng Zhuo, Arnav Mohan, Qixing Huang
In this paper, we introduce the problem of K-best transformation synchronization for the purpose of multiple scan matching.
no code implementations • 8 Aug 2019 • Yifan Sun, Linan Zhang, Hayden Schaeffer
We propose a neural network based approach for extracting models from dynamic data using ordinary and partial differential equations.
Ranked #12 on
Image Classification
on Fashion-MNIST
no code implementations • NeurIPS 2019 • Yifan Sun, Yaqi Duan, Hao Gong, Mengdi Wang
This paper studies how to find compact state embeddings from high-dimensional Markov state trajectories, where the transition kernel has a small intrinsic rank.
1 code implementation • CVPR 2019 • Yifan Sun, Qin Xu, Ya-Li Li, Chi Zhang, Yikang Li, Shengjin Wang, Jian Sun
The visibility awareness allows VPM to extract region-level features and compare two images with focus on their shared regions (which are visible on both images).
Ranked #14 on
Person Re-Identification
on Market-1501-C
no code implementations • ECCV 2018 • Yifan Sun, Zhenxiao Liang, Xiangru Huang, Qi-Xing Huang
Most existing techniques in map computation (e. g., in the form of feature or dense correspondences) assume that the underlying map between an object pair is unique.
no code implementations • 14 Mar 2018 • Can Karakus, Yifan Sun, Suhas Diggavi, Wotao Yin
Performance of distributed optimization and learning systems is bottlenecked by "straggler" nodes and slow communication links, which significantly delay computation.
no code implementations • CVPR 2018 • Wenqi Wang, Yifan Sun, Brian Eriksson, Wenlin Wang, Vaneet Aggarwal
Deep neural networks have demonstrated state-of-the-art performance in a variety of real-world applications.
1 code implementation • 21 Dec 2017 • Dejiao Zhang, Yifan Sun, Brian Eriksson, Laura Balzano
Unsupervised clustering is one of the most fundamental challenges in machine learning.
25 code implementations • ECCV 2018 • Yifan Sun, Liang Zheng, Yi Yang, Qi Tian, Shengjin Wang
RPP re-assigns these outliers to the parts they are closest to, resulting in refined parts with enhanced within-part consistency.
Ranked #3 on
Person Re-Identification
on UAV-Human
no code implementations • NeurIPS 2017 • Can Karakus, Yifan Sun, Suhas Diggavi, Wotao Yin
Slow running or straggler tasks can significantly reduce computation speed in distributed computation.
2 code implementations • 6 Jul 2017 • Yifan Sun, Nikhil Rao, Weicong Ding
Evaluating these methods is also problematic, as rigorous quantitative evaluations in this space is limited, especially when compared with single-sense embeddings.
no code implementations • ICCV 2017 • Yifan Sun, Liang Zheng, Weijian Deng, Shengjin Wang
This paper proposes the SVDNet for retrieval problems, with focus on the application of person re-identification (re-ID).
Ranked #14 on
Person Re-Identification
on CUHK03 detected
3 code implementations • 2 Mar 2017 • Zijun Yao, Yifan Sun, Weicong Ding, Nikhil Rao, Hui Xiong
Word evolution refers to the changing meanings and associations of words throughout time, as a byproduct of human language evolution.
1 code implementation • 18 Jun 2012 • Florent Krzakala, Marc Mézard, François Sausset, Yifan Sun, Lenka Zdeborová
We further develop the asymptotic analysis of the corresponding phase diagrams with and without measurement noise, for different distribution of signals, and discuss the best possible reconstruction performances regardless of the algorithm.
Statistical Mechanics Information Theory Information Theory
1 code implementation • 20 Sep 2011 • Florent Krzakala, Marc Mézard, François Sausset, Yifan Sun, Lenka Zdeborová
Compressed sensing is triggering a major evolution in signal acquisition.
Statistical Mechanics Information Theory Information Theory