Search Results for author: Hang Su

Found 165 papers, 83 papers with code

Defense Against Adversarial Attacks via Controlling Gradient Leaking on Embedded Manifolds

no code implementations ECCV 2020 Yueru Li, Shuyu Cheng, Hang Su, Jun Zhu

Based on our investigation, we further present a new robust learning algorithm which encourages a larger gradient component in the tangent space of data manifold, suppressing the gradient leaking phenomenon consequently.

Beta Distribution Guided Aspect-aware Graph for Aspect Category Sentiment Analysis with Affective Knowledge

2 code implementations EMNLP 2021 Bin Liang, Hang Su, Rongdi Yin, Lin Gui, Min Yang, Qin Zhao, Xiaoqi Yu, Ruifeng Xu

To be specific, we first regard each aspect as a pivot to derive aspect-aware words that are highly related to the aspect from external affective commonsense knowledge.

Aspect Category Sentiment Analysis graph construction +1

Omniview-Tuning: Boosting Viewpoint Invariance of Vision-Language Pre-training Models

no code implementations18 Apr 2024 Shouwei Ruan, Yinpeng Dong, Hanqing Liu, Yao Huang, Hang Su, Xingxing Wei

Vision-Language Pre-training (VLP) models like CLIP have achieved remarkable success in computer vision and particularly demonstrated superior robustness to distribution shifts of 2D images.

Exploring the Transferability of Visual Prompting for Multimodal Large Language Models

1 code implementation17 Apr 2024 Yichi Zhang, Yinpeng Dong, Siyuan Zhang, Tianzan Min, Hang Su, Jun Zhu

To achieve this, we propose Transferable Visual Prompting (TVP), a simple and effective approach to generate visual prompts that can transfer to different models and improve their performance on downstream tasks after trained on only one model.

Hallucination Multimodal Reasoning +2

FaceCat: Enhancing Face Recognition Security with a Unified Generative Model Framework

no code implementations14 Apr 2024 Jiawei Chen, Xiao Yang, Yinpeng Dong, Hang Su, Jianteng Peng, Zhaoxia Yin

Motivated by the rich structural and detailed features of face generative models, we propose FaceCat which utilizes the face generative model as a pre-trained model to improve the performance of FAS and FAD.

Face Anti-Spoofing Face Recognition +1

An N-Point Linear Solver for Line and Motion Estimation with Event Cameras

no code implementations1 Apr 2024 Ling Gao, Daniel Gehrig, Hang Su, Davide Scaramuzza, Laurent Kneip

To recover the full linear camera velocity we fuse observations from multiple lines with a novel velocity averaging scheme that relies on a geometrically-motivated residual, and thus solves the problem more efficiently than previous schemes which minimize an algebraic residual.

Motion Estimation

Embodied Active Defense: Leveraging Recurrent Feedback to Counter Adversarial Patches

no code implementations31 Mar 2024 Lingxuan Wu, Xiao Yang, Yinpeng Dong, Liuwei Xie, Hang Su, Jun Zhu

The vulnerability of deep neural networks to adversarial patches has motivated numerous defense strategies for boosting model robustness.

Face Recognition object-detection +1

CRM: Single Image to 3D Textured Mesh with Convolutional Reconstruction Model

no code implementations8 Mar 2024 Zhengyi Wang, Yikai Wang, Yifei Chen, Chendong Xiang, Shuo Chen, Dajiang Yu, Chongxuan Li, Hang Su, Jun Zhu

In this work, we present the Convolutional Reconstruction Model (CRM), a high-fidelity feed-forward single image-to-3D generative model.

Image to 3D

Can Your Model Tell a Negation from an Implicature? Unravelling Challenges With Intent Encoders

no code implementations7 Mar 2024 Yuwei Zhang, Siffi Singh, Sailik Sengupta, Igor Shalyminov, Hang Su, Hwanjun Song, Saab Mansour

The triplet task gauges the model's understanding of two semantic concepts paramount in real-world conversational systems-- negation and implicature.

Clustering intent-classification +2

Semi-Supervised Dialogue Abstractive Summarization via High-Quality Pseudolabel Selection

1 code implementation6 Mar 2024 Jianfeng He, Hang Su, Jason Cai, Igor Shalyminov, Hwanjun Song, Saab Mansour

Semi-supervised dialogue summarization (SSDS) leverages model-generated summaries to reduce reliance on human-labeled data and improve the performance of summarization models.

Abstractive Text Summarization Natural Language Understanding

DPOT: Auto-Regressive Denoising Operator Transformer for Large-Scale PDE Pre-Training

1 code implementation6 Mar 2024 Zhongkai Hao, Chang Su, Songming Liu, Julius Berner, Chengyang Ying, Hang Su, Anima Anandkumar, Jian Song, Jun Zhu

Pre-training has been investigated to improve the efficiency and performance of training neural operators in data-scarce settings.

Denoising

MAGID: An Automated Pipeline for Generating Synthetic Multi-modal Datasets

no code implementations5 Mar 2024 Hossein Aboutalebi, Hwanjun Song, Yusheng Xie, Arshit Gupta, Justin Sun, Hang Su, Igor Shalyminov, Nikolaos Pappas, Siffi Singh, Saab Mansour

Development of multimodal interactive systems is hindered by the lack of rich, multimodal (text, images) conversational data, which is needed in large quantities for LLMs.

Image-text matching Retrieval +1

BSPA: Exploring Black-box Stealthy Prompt Attacks against Image Generators

no code implementations23 Feb 2024 Yu Tian, Xiao Yang, Yinpeng Dong, Heming Yang, Hang Su, Jun Zhu

It allows users to design specific prompts to generate realistic images through some black-box APIs.

TofuEval: Evaluating Hallucinations of LLMs on Topic-Focused Dialogue Summarization

1 code implementation20 Feb 2024 Liyan Tang, Igor Shalyminov, Amy Wing-mei Wong, Jon Burnsky, Jake W. Vincent, Yu'an Yang, Siffi Singh, Song Feng, Hwanjun Song, Hang Su, Lijia Sun, Yi Zhang, Saab Mansour, Kathleen McKeown

We find that there are diverse errors and error distributions in model-generated summaries and that non-LLM based metrics can capture all error types better than LLM-based evaluators.

Hallucination News Summarization +2

Noise Contrastive Alignment of Language Models with Explicit Rewards

1 code implementation8 Feb 2024 Huayu Chen, Guande He, Hang Su, Jun Zhu

Existing alignment methods, such as Direct Preference Optimization (DPO), are mainly tailored for pairwise preference data where rewards are implicitly defined rather than explicitly given.

Language Modelling

Preconditioning for Physics-Informed Neural Networks

no code implementations1 Feb 2024 Songming Liu, Chang Su, Jiachen Yao, Zhongkai Hao, Hang Su, Youjia Wu, Jun Zhu

Physics-informed neural networks (PINNs) have shown promise in solving various partial differential equations (PDEs).

FoVA-Depth: Field-of-View Agnostic Depth Estimation for Cross-Dataset Generalization

no code implementations24 Jan 2024 Daniel Lichy, Hang Su, Abhishek Badki, Jan Kautz, Orazio Gallo

Unfortunately, most of the GT data is for pinhole cameras, making it impossible to properly train depth estimation models for large-FoV cameras.

Stereo Depth Estimation

Machine Vision Therapy: Multimodal Large Language Models Can Enhance Visual Robustness via Denoising In-Context Learning

1 code implementation5 Dec 2023 Zhuo Huang, Chang Liu, Yinpeng Dong, Hang Su, Shibao Zheng, Tongliang Liu

Concretely, by estimating a transition matrix that captures the probability of one class being confused with another, an instruction containing a correct exemplar and an erroneous one from the most probable noisy class can be constructed.

Denoising In-Context Learning

Evil Geniuses: Delving into the Safety of LLM-based Agents

1 code implementation20 Nov 2023 Yu Tian, Xiao Yang, Jingyuan Zhang, Yinpeng Dong, Hang Su

Rapid advancements in large language models (LLMs) have revitalized in LLM-based agents, exhibiting impressive human-like behaviors and cooperative capabilities in various scenarios.

Specificity

Multi-view learning for automatic classification of multi-wavelength auroral images

no code implementations6 Nov 2023 Qiuju Yang, Hang Su, Lili Liu, YiXuan Wang, Ze-Jun Hu

Finally, to highlight the discriminative information between auroral classes, we propose a lightweight attention feature enhancement module called LAFE.

Classification Computational Efficiency +1

Mobile AR Depth Estimation: Challenges & Prospects -- Extended Version

no code implementations22 Oct 2023 Ashkan Ganj, Yiqin Zhao, Hang Su, Tian Guo

In this paper, we investigate the challenges and opportunities of achieving accurate metric depth estimation in mobile AR.

Monocular Depth Estimation

Towards a General Framework for Continual Learning with Pre-training

1 code implementation21 Oct 2023 Liyuan Wang, Jingyi Xie, Xingxing Zhang, Hang Su, Jun Zhu

In this work, we present a general framework for continual learning of sequentially arrived tasks with the use of pre-training, which has emerged as a promising direction for artificial intelligence systems to accommodate real-world dynamics.

Continual Learning

Enhancing Abstractiveness of Summarization Models through Calibrated Distillation

no code implementations20 Oct 2023 Hwanjun Song, Igor Shalyminov, Hang Su, Siffi Singh, Kaisheng Yao, Saab Mansour

Our experiments show that DisCal outperforms prior methods in abstractive summarization distillation, producing highly abstractive and informative summaries.

Abstractive Text Summarization Informativeness +1

Improved Operator Learning by Orthogonal Attention

1 code implementation19 Oct 2023 Zipeng Xiao, Zhongkai Hao, Bokai Lin, Zhijie Deng, Hang Su

Neural operators, as an efficient surrogate model for learning the solutions of PDEs, have received extensive attention in the field of scientific machine learning.

Operator learning

Score Regularized Policy Optimization through Diffusion Behavior

1 code implementation11 Oct 2023 Huayu Chen, Cheng Lu, Zhengyi Wang, Hang Su, Jun Zhu

Recent developments in offline reinforcement learning have uncovered the immense potential of diffusion modeling, which excels at representing heterogeneous behavior policies.

D4RL

Hierarchical Decomposition of Prompt-Based Continual Learning: Rethinking Obscured Sub-optimality

1 code implementation NeurIPS 2023 Liyuan Wang, Jingyi Xie, Xingxing Zhang, Mingyi Huang, Hang Su, Jun Zhu

Following these empirical and theoretical insights, we propose Hierarchical Decomposition (HiDe-)Prompt, an innovative approach that explicitly optimizes the hierarchical components with an ensemble of task-specific prompts and statistics of both uninstructed and instructed representations, further with the coordination of a contrastive regularization strategy.

Continual Learning

How Robust is Google's Bard to Adversarial Image Attacks?

1 code implementation21 Sep 2023 Yinpeng Dong, Huanran Chen, Jiawei Chen, Zhengwei Fang, Xiao Yang, Yichi Zhang, Yu Tian, Hang Su, Jun Zhu

By attacking white-box surrogate vision encoders or MLLMs, the generated adversarial examples can mislead Bard to output wrong image descriptions with a 22% success rate based solely on the transferability.

Adversarial Robustness Chatbot +1

Incorporating Neuro-Inspired Adaptability for Continual Learning in Artificial Intelligence

1 code implementation29 Aug 2023 Liyuan Wang, Xingxing Zhang, Qian Li, Mingtian Zhang, Hang Su, Jun Zhu, Yi Zhong

Continual learning aims to empower artificial intelligence (AI) with strong adaptability to the real world.

Continual Learning

AdvFAS: A robust face anti-spoofing framework against adversarial examples

no code implementations4 Aug 2023 Jiawei Chen, Xiao Yang, Heng Yin, Mingzhi Ma, Bihui Chen, Jianteng Peng, Yandong Guo, Zhaoxia Yin, Hang Su

Ensuring the reliability of face recognition systems against presentation attacks necessitates the deployment of face anti-spoofing techniques.

Adversarial Defense Face Anti-Spoofing +1

COCO-O: A Benchmark for Object Detectors under Natural Distribution Shifts

1 code implementation ICCV 2023 Xiaofeng Mao, Yuefeng Chen, Yao Zhu, Da Chen, Hang Su, Rong Zhang, Hui Xue

To give a more comprehensive robustness assessment, we introduce COCO-O(ut-of-distribution), a test dataset based on COCO with 6 types of natural distribution shifts.

Autonomous Driving Object +2

Improving Viewpoint Robustness for Visual Recognition via Adversarial Training

1 code implementation21 Jul 2023 Shouwei Ruan, Yinpeng Dong, Hang Su, Jianteng Peng, Ning Chen, Xingxing Wei

Experimental results show that VIAT significantly improves the viewpoint robustness of various image classifiers based on the diversity of adversarial viewpoints generated by GMVFool.

Towards Viewpoint-Invariant Visual Recognition via Adversarial Training

1 code implementation ICCV 2023 Shouwei Ruan, Yinpeng Dong, Hang Su, Jianteng Peng, Ning Chen, Xingxing Wei

Visual recognition models are not invariant to viewpoint changes in the 3D world, as different viewing directions can dramatically affect the predictions given the same object.

Distributional Modeling for Location-Aware Adversarial Patches

1 code implementation28 Jun 2023 Xingxing Wei, Shouwei Ruan, Yinpeng Dong, Hang Su

In this paper, we propose the Distribution-Optimized Adversarial Patch (DOPatch), a novel method that optimizes a multimodal distribution of adversarial locations instead of individual ones.

Face Recognition

PINNacle: A Comprehensive Benchmark of Physics-Informed Neural Networks for Solving PDEs

1 code implementation15 Jun 2023 Zhongkai Hao, Jiachen Yao, Chang Su, Hang Su, Ziao Wang, Fanzhi Lu, Zeyu Xia, Yichi Zhang, Songming Liu, Lu Lu, Jun Zhu

In addition to providing a standardized means of assessing performance, PINNacle also offers an in-depth analysis to guide future research, particularly in areas such as domain decomposition methods and loss reweighting for handling multi-scale problems and complex geometry.

Benchmarking

DIFFender: Diffusion-Based Adversarial Defense against Patch Attacks

no code implementations15 Jun 2023 Caixin Kang, Yinpeng Dong, Zhengyi Wang, Shouwei Ruan, Yubo Chen, Hang Su, Xingxing Wei

In this paper, we propose DIFFender, a novel defense method that leverages a text-guided diffusion model to defend against adversarial patches.

Adversarial Defense Face Recognition +1

MultiAdam: Parameter-wise Scale-invariant Optimizer for Multiscale Training of Physics-informed Neural Networks

no code implementations5 Jun 2023 Jiachen Yao, Chang Su, Zhongkai Hao, Songming Liu, Hang Su, Jun Zhu

Physics-informed Neural Networks (PINNs) have recently achieved remarkable progress in solving Partial Differential Equations (PDEs) in various fields by minimizing a weighted sum of PDE loss and boundary loss.

NUNO: A General Framework for Learning Parametric PDEs with Non-Uniform Data

1 code implementation30 May 2023 Songming Liu, Zhongkai Hao, Chengyang Ying, Hang Su, Ze Cheng, Jun Zhu

The neural operator has emerged as a powerful tool in learning mappings between function spaces in PDEs.

Operator learning

ProlificDreamer: High-Fidelity and Diverse Text-to-3D Generation with Variational Score Distillation

2 code implementations NeurIPS 2023 Zhengyi Wang, Cheng Lu, Yikai Wang, Fan Bao, Chongxuan Li, Hang Su, Jun Zhu

In comparison, VSD works well with various CFG weights as ancestral sampling from diffusion models and simultaneously improves the diversity and sample quality with a common CFG weight (i. e., $7. 5$).

3D Generation Text to 3D

Robust Classification via a Single Diffusion Model

2 code implementations24 May 2023 Huanran Chen, Yinpeng Dong, Zhengyi Wang, Xiao Yang, Chengqi Duan, Hang Su, Jun Zhu

Since our method does not require training on particular adversarial attacks, we demonstrate that it is more generalizable to defend against multiple unseen threats.

Adversarial Defense Adversarial Robustness +2

DIVA: A Dirichlet Process Mixtures Based Incremental Deep Clustering Algorithm via Variational Auto-Encoder

1 code implementation23 May 2023 Zhenshan Bing, Yuan Meng, Yuqi Yun, Hang Su, Xiaojie Su, Kai Huang, Alois Knoll

Generative model-based deep clustering frameworks excel in classifying complex data, but are limited in handling dynamic and complex features because they require prior knowledge of the number of clusters.

Clustering Image Generation +2

Assessing the potential of AI-assisted pragmatic annotation: The case of apologies

no code implementations15 May 2023 Danni Yu, Luyang Li, Hang Su, Matteo Fuoli

We find that the Bing chatbot outperformed ChatGPT, with accuracy approaching that of a human coder.

Chatbot TAG

Decision-based iterative fragile watermarking for model integrity verification

no code implementations13 May 2023 Zhaoxia Yin, Heng Yin, Hang Su, Xinpeng Zhang, Zhenzhe Gao

Our method has some advantages: (1) the iterative update of samples is done in a decision-based black-box manner, relying solely on the predicted probability distribution of the target model, which reduces the risk of exposure to adversarial attacks, (2) the small-amplitude multiple iterations approach allows the fragile samples to perform well visually, with a PSNR of 55 dB in TinyImageNet compared to the original samples, (3) even with changes in the overall parameters of the model of magnitude 1e-4, the fragile samples can detect such changes, and (4) the method is independent of the specific model structure and dataset.

Adversarial Examples Detection with Enhanced Image Difference Features based on Local Histogram Equalization

no code implementations8 May 2023 Zhaoxia Yin, Shaowei Zhu, Hang Su, Jianteng Peng, Wanli Lyu, Bin Luo

However, numerous studies have proven that previous methods create detection or defense against certain attacks, which renders the method ineffective in the face of the latest unknown attack methods.

Feature Compression

Text-to-Image Diffusion Models can be Easily Backdoored through Multimodal Data Poisoning

1 code implementation7 May 2023 Shengfang Zhai, Yinpeng Dong, Qingni Shen, Shi Pu, Yuejian Fang, Hang Su

To gain a better understanding of the training process and potential risks of text-to-image synthesis, we perform a systematic investigation of backdoor attack on text-to-image diffusion models and propose BadT2I, a general multimodal backdoor attack framework that tampers with image synthesis in diverse semantic levels.

Backdoor Attack backdoor defense +2

Meta-Reinforcement Learning Based on Self-Supervised Task Representation Learning

no code implementations29 Apr 2023 Mingyang Wang, Zhenshan Bing, Xiangtong Yao, Shuai Wang, Hang Su, Chenguang Yang, Kai Huang, Alois Knoll

On MuJoCo and Meta-World benchmarks, MoSS outperforms prior works in terms of asymptotic performance, sample efficiency (3-50x faster), adaptation efficiency, and generalization robustness on broad and diverse task distributions.

Meta Reinforcement Learning reinforcement-learning +1

Contrastive Energy Prediction for Exact Energy-Guided Diffusion Sampling in Offline Reinforcement Learning

3 code implementations25 Apr 2023 Cheng Lu, Huayu Chen, Jianfei Chen, Hang Su, Chongxuan Li, Jun Zhu

The main challenge for this setting is that the intermediate guidance during the diffusion sampling procedure, which is jointly defined by the sampling distribution and the energy function, is unknown and is hard to estimate.

D4RL Image Generation +1

Detection Transformer with Stable Matching

1 code implementation ICCV 2023 Shilong Liu, Tianhe Ren, Jiayu Chen, Zhaoyang Zeng, Hao Zhang, Feng Li, Hongyang Li, Jun Huang, Hang Su, Jun Zhu, Lei Zhang

We point out that the unstable matching in DETR is caused by a multi-optimization path problem, which is highlighted by the one-to-one matching design in DETR.

Position

A Closer Look at Parameter-Efficient Tuning in Diffusion Models

1 code implementation31 Mar 2023 Chendong Xiang, Fan Bao, Chongxuan Li, Hang Su, Jun Zhu

Large-scale diffusion models like Stable Diffusion are powerful and find various real-world applications while customizing such models by fine-tuning is both memory and time inefficient.

Efficient Diffusion Personalization Position

Towards Effective Adversarial Textured 3D Meshes on Physical Face Recognition

1 code implementation CVPR 2023 Xiao Yang, Chang Liu, Longlong Xu, Yikai Wang, Yinpeng Dong, Ning Chen, Hang Su, Jun Zhu

The goal of this work is to develop a more reliable technique that can carry out an end-to-end evaluation of adversarial robustness for commercial systems.

Adversarial Robustness Face Recognition

One Transformer Fits All Distributions in Multi-Modal Diffusion at Scale

3 code implementations12 Mar 2023 Fan Bao, Shen Nie, Kaiwen Xue, Chongxuan Li, Shi Pu, Yaole Wang, Gang Yue, Yue Cao, Hang Su, Jun Zhu

Inspired by the unified view, UniDiffuser learns all distributions simultaneously with a minimal modification to the original diffusion model -- perturbs data in all modalities instead of a single modality, inputs individual timesteps in different modalities, and predicts the noise of all modalities instead of a single modality.

Text-to-Image Generation

Grounding DINO: Marrying DINO with Grounded Pre-Training for Open-Set Object Detection

7 code implementations9 Mar 2023 Shilong Liu, Zhaoyang Zeng, Tianhe Ren, Feng Li, Hao Zhang, Jie Yang, Chunyuan Li, Jianwei Yang, Hang Su, Jun Zhu, Lei Zhang

To effectively fuse language and vision modalities, we conceptually divide a closed-set detector into three phases and propose a tight fusion solution, which includes a feature enhancer, a language-guided query selection, and a cross-modality decoder for cross-modality fusion.

Referring Expression Referring Expression Comprehension +2

Task Aware Dreamer for Task Generalization in Reinforcement Learning

no code implementations9 Mar 2023 Chengyang Ying, Zhongkai Hao, Xinning Zhou, Hang Su, Songming Liu, Dong Yan, Jun Zhu

Extensive experiments in both image-based and state-based tasks show that TAD can significantly improve the performance of handling different tasks simultaneously, especially for those with high TDR, and display a strong generalization ability to unseen tasks.

reinforcement-learning Reinforcement Learning (RL)

To Make Yourself Invisible with Adversarial Semantic Contours

no code implementations1 Mar 2023 Yichi Zhang, Zijian Zhu, Hang Su, Jun Zhu, Shibao Zheng, Yuan He, Hui Xue

In this paper, we propose Adversarial Semantic Contour (ASC), an MAP estimate of a Bayesian formulation of sparse attack with a deceived prior of object contour.

Autonomous Driving Object +2

Improving Model Generalization by On-manifold Adversarial Augmentation in the Frequency Domain

no code implementations28 Feb 2023 Chang Liu, Wenzhao Xiang, Yuan He, Hui Xue, Shibao Zheng, Hang Su

To address this issue, we proposed a novel method of Augmenting data with Adversarial examples via a Wavelet module (AdvWavAug), an on-manifold adversarial data augmentation technique that is simple to implement.

Data Augmentation

GNOT: A General Neural Operator Transformer for Operator Learning

2 code implementations28 Feb 2023 Zhongkai Hao, Zhengyi Wang, Hang Su, Chengyang Ying, Yinpeng Dong, Songming Liu, Ze Cheng, Jian Song, Jun Zhu

However, there are several challenges for learning operators in practical applications like the irregular mesh, multiple input functions, and complexity of the PDEs' solution.

Operator learning

A Comprehensive Study on Robustness of Image Classification Models: Benchmarking and Rethinking

no code implementations28 Feb 2023 Chang Liu, Yinpeng Dong, Wenzhao Xiang, Xiao Yang, Hang Su, Jun Zhu, Yuefeng Chen, Yuan He, Hui Xue, Shibao Zheng

In our benchmark, we evaluate the robustness of 55 typical deep learning models on ImageNet with diverse architectures (e. g., CNNs, Transformers) and learning algorithms (e. g., normal supervised training, pre-training, adversarial training) under numerous adversarial attacks and out-of-distribution (OOD) datasets.

Adversarial Robustness Benchmarking +2

A Comprehensive Survey of Continual Learning: Theory, Method and Application

1 code implementation31 Jan 2023 Liyuan Wang, Xingxing Zhang, Hang Su, Jun Zhu

To cope with real-world dynamics, an intelligent system needs to incrementally acquire, update, accumulate, and exploit knowledge throughout its lifetime.

Continual Learning Learning Theory

DQ-DETR: Dual Query Detection Transformer for Phrase Extraction and Grounding

1 code implementation28 Nov 2022 Shilong Liu, Yaoyuan Liang, Feng Li, Shijia Huang, Hao Zhang, Hang Su, Jun Zhu, Lei Zhang

As phrase extraction can be regarded as a $1$D text segmentation problem, we formulate PEG as a dual detection problem and propose a novel DQ-DETR model, which introduces dual queries to probe different features from image and text for object prediction and phrase mask prediction.

object-detection Object Detection +4

Physics-Informed Machine Learning: A Survey on Problems, Methods and Applications

1 code implementation15 Nov 2022 Zhongkai Hao, Songming Liu, Yichi Zhang, Chengyang Ying, Yao Feng, Hang Su, Jun Zhu

Recent work shows that it provides potential benefits for machine learning models by incorporating the physical prior and collected data, which makes the intersection of machine learning and physics become a prevailing paradigm.

Physics-informed machine learning

Model-based Reinforcement Learning with a Hamiltonian Canonical ODE Network

no code implementations2 Nov 2022 Yao Feng, Yuhong Jiang, Hang Su, Dong Yan, Jun Zhu

Model-based reinforcement learning usually suffers from a high sample complexity in training the world model, especially for the environments with complex dynamics.

Model-based Reinforcement Learning reinforcement-learning +1

A Unified Hard-Constraint Framework for Solving Geometrically Complex PDEs

1 code implementation6 Oct 2022 Songming Liu, Zhongkai Hao, Chengyang Ying, Hang Su, Jun Zhu, Ze Cheng

We present a unified hard-constraint framework for solving geometrically complex PDEs with neural networks, where the most commonly used Dirichlet, Neumann, and Robin boundary conditions (BCs) are considered.

Offline Reinforcement Learning via High-Fidelity Generative Behavior Modeling

1 code implementation29 Sep 2022 Huayu Chen, Cheng Lu, Chengyang Ying, Hang Su, Jun Zhu

To address this problem, we adopt a generative approach by decoupling the learned policy into two parts: an expressive generative behavior model and an action evaluation model.

Computational Efficiency D4RL +4

All are Worth Words: A ViT Backbone for Diffusion Models

3 code implementations CVPR 2023 Fan Bao, Shen Nie, Kaiwen Xue, Yue Cao, Chongxuan Li, Hang Su, Jun Zhu

We evaluate U-ViT in unconditional and class-conditional image generation, as well as text-to-image generation tasks, where U-ViT is comparable if not superior to a CNN-based U-Net of a similar size.

Conditional Image Generation Text-to-Image Generation

Bi-level Physics-Informed Neural Networks for PDE Constrained Optimization using Broyden's Hypergradients

no code implementations15 Sep 2022 Zhongkai Hao, Chengyang Ying, Hang Su, Jun Zhu, Jian Song, Ze Cheng

In this paper, we present a novel bi-level optimization framework to resolve the challenge by decoupling the optimization of the targets and constraints.

On the Reuse Bias in Off-Policy Reinforcement Learning

1 code implementation15 Sep 2022 Chengyang Ying, Zhongkai Hao, Xinning Zhou, Hang Su, Dong Yan, Jun Zhu

In this paper, we reveal that the instability is also related to a new notion of Reuse Bias of IS -- the bias in off-policy evaluation caused by the reuse of the replay buffer for evaluation and optimization.

Continuous Control Off-policy evaluation +1

Consistent Attack: Universal Adversarial Perturbation on Embodied Vision Navigation

1 code implementation12 Jun 2022 Chengyang Ying, You Qiaoben, Xinning Zhou, Hang Su, Wenbo Ding, Jianyong Ai

Among different adversarial noises, universal adversarial perturbations (UAP), i. e., a constant image-agnostic perturbation applied on every input frame of the agent, play a critical role in Embodied Vision Navigation since they are computation-efficient and application-practical during the attack.

Towards Safe Reinforcement Learning via Constraining Conditional Value-at-Risk

1 code implementation9 Jun 2022 Chengyang Ying, Xinning Zhou, Hang Su, Dong Yan, Ning Chen, Jun Zhu

Though deep reinforcement learning (DRL) has obtained substantial success, it may encounter catastrophic failures due to the intrinsic uncertainty of both transition and observation.

Continuous Control reinforcement-learning +2

GSmooth: Certified Robustness against Semantic Transformations via Generalized Randomized Smoothing

no code implementations9 Jun 2022 Zhongkai Hao, Chengyang Ying, Yinpeng Dong, Hang Su, Jun Zhu, Jian Song

Under the GSmooth framework, we present a scalable algorithm that uses a surrogate image-to-image network to approximate the complex transformation.

Policy Learning for Robust Markov Decision Process with a Mismatched Generative Model

no code implementations13 Mar 2022 Jialian Li, Tongzheng Ren, Dong Yan, Hang Su, Jun Zhu

Our goal is to identify a near-optimal robust policy for the perturbed testing environment, which introduces additional technical difficulties as we need to simultaneously estimate the training environment uncertainty from samples and find the worst-case perturbation for testing.

Query-Efficient Black-box Adversarial Attacks Guided by a Transfer-based Prior

1 code implementation13 Mar 2022 Yinpeng Dong, Shuyu Cheng, Tianyu Pang, Hang Su, Jun Zhu

However, the existing methods inevitably suffer from low attack success rates or poor query efficiency since it is difficult to estimate the gradient in a high-dimensional input space with limited information.

Controllable Evaluation and Generation of Physical Adversarial Patch on Face Recognition

no code implementations9 Mar 2022 Xiao Yang, Yinpeng Dong, Tianyu Pang, Zihao Xiao, Hang Su, Jun Zhu

It is therefore imperative to develop a framework that can enable a comprehensive evaluation of the vulnerability of face recognition in the physical world.

3D Face Modelling Face Recognition

DINO: DETR with Improved DeNoising Anchor Boxes for End-to-End Object Detection

15 code implementations7 Mar 2022 Hao Zhang, Feng Li, Shilong Liu, Lei Zhang, Hang Su, Jun Zhu, Lionel M. Ni, Heung-Yeung Shum

Compared to other models on the leaderboard, DINO significantly reduces its model size and pre-training data size while achieving better results.

Real-Time Object Detection

DAB-DETR: Dynamic Anchor Boxes are Better Queries for DETR

7 code implementations ICLR 2022 Shilong Liu, Feng Li, Hao Zhang, Xiao Yang, Xianbiao Qi, Hang Su, Jun Zhu, Lei Zhang

We present in this paper a novel query formulation using dynamic anchor boxes for DETR (DEtection TRansformer) and offer a deeper understanding of the role of queries in DETR.

Object Detection

Denoised Internal Models: a Brain-Inspired Autoencoder against Adversarial Attacks

no code implementations21 Nov 2021 Kaiyuan Liu, Xingyu Li, Yurui Lai, Ge Zhang, Hang Su, Jiachen Wang, Chunxu Guo, Jisong Guan, Yi Zhou

Despite its great success, deep learning severely suffers from robustness; that is, deep neural networks are very vulnerable to adversarial attacks, even the simplest ones.

Model-Agnostic Meta-Attack: Towards Reliable Evaluation of Adversarial Robustness

no code implementations13 Oct 2021 Xiao Yang, Yinpeng Dong, Wenzhao Xiang, Tianyu Pang, Hang Su, Jun Zhu

The vulnerability of deep neural networks to adversarial examples has motivated an increasing number of defense strategies for promoting model robustness.

Adversarial Robustness

You Cannot Easily Catch Me: A Low-Detectable Adversarial Patch for Object Detectors

no code implementations30 Sep 2021 Zijian Zhu, Hang Su, Chang Liu, Wenzhao Xiang, Shibao Zheng

Fortunately, most existing adversarial patches can be outwitted, disabled and rejected by a simple classification network called an adversarial patch detector, which distinguishes adversarial patches from original images.

Self-Driving Cars

Cluster Attack: Query-based Adversarial Attacks on Graphs with Graph-Dependent Priors

1 code implementation ICML Workshop AML 2021 Zhengyi Wang, Zhongkai Hao, Ziqiao Wang, Hang Su, Jun Zhu

In this work, we propose Cluster Attack -- a Graph Injection Attack (GIA) on node classification, which injects fake nodes into the original graph to degenerate the performance of graph neural networks (GNNs) on certain victim nodes while affecting the other nodes as little as possible.

Adversarial Attack Clustering +3

Improving the Robustness of Adversarial Attacks Using an Affine-Invariant Gradient Estimator

no code implementations13 Sep 2021 Wenzhao Xiang, Hang Su, Chang Liu, Yandong Guo, Shibao Zheng

As designers of artificial intelligence try to outwit hackers, both sides continue to hone in on AI's inherent vulnerabilities.

Adversarial Attack

Tianshou: a Highly Modularized Deep Reinforcement Learning Library

1 code implementation29 Jul 2021 Jiayi Weng, Huayu Chen, Dong Yan, Kaichao You, Alexis Duburcq, Minghao Zhang, Yi Su, Hang Su, Jun Zhu

In this paper, we present Tianshou, a highly modularized Python library for deep reinforcement learning (DRL) that uses PyTorch as its backend.

reinforcement-learning Reinforcement Learning (RL)

Query2Label: A Simple Transformer Way to Multi-Label Classification

2 code implementations22 Jul 2021 Shilong Liu, Lei Zhang, Xiao Yang, Hang Su, Jun Zhu

The use of Transformer is rooted in the need of extracting local discriminative features adaptively for different labels, which is a strongly desired property due to the existence of multiple objects in one image.

Classification Multi-Label Classification

Understanding Adversarial Attacks on Observations in Deep Reinforcement Learning

no code implementations30 Jun 2021 You Qiaoben, Chengyang Ying, Xinning Zhou, Hang Su, Jun Zhu, Bo Zhang

In this paper, we provide a framework to better understand the existing methods by reformulating the problem of adversarial attacks on reinforcement learning in the function space.

reinforcement-learning Reinforcement Learning (RL)

Accumulative Poisoning Attacks on Real-time Data

1 code implementation NeurIPS 2021 Tianyu Pang, Xiao Yang, Yinpeng Dong, Hang Su, Jun Zhu

Collecting training data from untrusted sources exposes machine learning services to poisoning adversaries, who maliciously manipulate training data to degrade the model accuracy.

Federated Learning

Exploring Memorization in Adversarial Training

1 code implementation ICLR 2022 Yinpeng Dong, Ke Xu, Xiao Yang, Tianyu Pang, Zhijie Deng, Hang Su, Jun Zhu

In this paper, we explore the memorization effect in adversarial training (AT) for promoting a deeper understanding of model capacity, convergence, generalization, and especially robust overfitting of the adversarially trained models.

Memorization

Two Coupled Rejection Metrics Can Tell Adversarial Examples Apart

1 code implementation CVPR 2022 Tianyu Pang, Huishuai Zhang, Di He, Yinpeng Dong, Hang Su, Wei Chen, Jun Zhu, Tie-Yan Liu

Along with this routine, we find that confidence and a rectified confidence (R-Con) can form two coupled rejection metrics, which could provably distinguish wrongly classified inputs from correctly classified ones.

Vocal Bursts Valence Prediction

Unsupervised Part Segmentation through Disentangling Appearance and Shape

no code implementations CVPR 2021 Shilong Liu, Lei Zhang, Xiao Yang, Hang Su, Jun Zhu

We study the problem of unsupervised discovery and segmentation of object parts, which, as an intermediate local representation, are capable of finding intrinsic object structure and providing more explainable recognition results.

Disentanglement Object +3

Automated Decision-based Adversarial Attacks

no code implementations9 May 2021 Qi-An Fu, Yinpeng Dong, Hang Su, Jun Zhu

Deep learning models are vulnerable to adversarial examples, which can fool a target classifier by imposing imperceptible perturbations onto natural examples.

Adversarial Attack Program Synthesis

Dissecting User-Perceived Latency of On-Device E2E Speech Recognition

no code implementations6 Apr 2021 Yuan Shangguan, Rohit Prabhavalkar, Hang Su, Jay Mahadeokar, Yangyang Shi, Jiatong Zhou, Chunyang Wu, Duc Le, Ozlem Kalinli, Christian Fuegen, Michael L. Seltzer

As speech-enabled devices such as smartphones and smart speakers become increasingly ubiquitous, there is growing interest in building automatic speech recognition (ASR) systems that can run directly on-device; end-to-end (E2E) speech recognition models such as recurrent neural network transducers and their variants have recently emerged as prime candidates for this task.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +1

Black-box Detection of Backdoor Attacks with Limited Information and Data

no code implementations ICCV 2021 Yinpeng Dong, Xiao Yang, Zhijie Deng, Tianyu Pang, Zihao Xiao, Hang Su, Jun Zhu

Although deep neural networks (DNNs) have made rapid progress in recent years, they are vulnerable in adversarial environments.

QAIR: Practical Query-efficient Black-Box Attacks for Image Retrieval

no code implementations CVPR 2021 Xiaodan Li, Jinfeng Li, Yuefeng Chen, Shaokai Ye, Yuan He, Shuhui Wang, Hang Su, Hui Xue

Comprehensive experiments show that the proposed attack achieves a high attack success rate with few queries against the image retrieval systems under the black-box setting.

Image Classification Image Retrieval +1

Growth, Electronic Structure and Superconductivity of Ultrathin Epitaxial CoSi2 Films

no code implementations21 Jan 2021 Yuan Fang, Ding Wang, Peng Li, Hang Su, Tian Le, Yi Wu, Guo-Wei Yang, Hua-Li Zhang, Zhi-Guang Xiao, Yan-Qiu Sun, Si-Yuan Hong, Yan-Wu Xie, Huan-Hua Wang, Chao Cao, Xin Lu, Hui-Qiu Yuan, Yang Liu

We report growth, electronic structure and superconductivity of ultrathin epitaxial CoSi2 films on Si(111).

Mesoscale and Nanoscale Physics

Adaptive N-step Bootstrapping with Off-policy Data

no code implementations1 Jan 2021 Guan Wang, Dong Yan, Hang Su, Jun Zhu

In this work, we point out that the optimal value of n actually differs on each data point, while the fixed value n is a rough average of them.

Atari Games

Composite Adversarial Attacks

1 code implementation10 Dec 2020 Xiaofeng Mao, Yuefeng Chen, Shuhui Wang, Hang Su, Yuan He, Hui Xue

Adversarial attack is a technique for deceiving Machine Learning (ML) models, which provides a way to evaluate the adversarial robustness.

Adversarial Attack Adversarial Robustness

Robust Unsupervised Small Area Change Detection from SAR Imagery Using Deep Learning

1 code implementation22 Nov 2020 Xinzheng Zhang, Hang Su, Ce Zhang, Xiaowei Gu, Xiaoheng Tan, Peter M. Atkinson

In this paper, a robust unsupervised approach is proposed for small area change detection from multi-temporal SAR images using deep learning.

Change Detection Clustering +2

Alignment Restricted Streaming Recurrent Neural Network Transducer

no code implementations5 Nov 2020 Jay Mahadeokar, Yuan Shangguan, Duc Le, Gil Keren, Hang Su, Thong Le, Ching-Feng Yeh, Christian Fuegen, Michael L. Seltzer

There is a growing interest in the speech community in developing Recurrent Neural Network Transducer (RNN-T) models for automatic speech recognition (ASR) applications.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +2

Bi-level Score Matching for Learning Energy-based Latent Variable Models

1 code implementation NeurIPS 2020 Fan Bao, Chongxuan Li, Kun Xu, Hang Su, Jun Zhu, Bo Zhang

This paper presents a bi-level score matching (BiSM) method to learn EBLVMs with general structures by reformulating SM as a bi-level optimization problem.

Rolling Shutter Correction Stochastic Optimization

Bag of Tricks for Adversarial Training

2 code implementations ICLR 2021 Tianyu Pang, Xiao Yang, Yinpeng Dong, Hang Su, Jun Zhu

Adversarial training (AT) is one of the most effective strategies for promoting model robustness.

Adversarial Robustness Benchmarking

Training Interpretable Convolutional Neural Networks by Differentiating Class-specific Filters

1 code implementation ECCV 2020 Haoyu Liang, Zhihao Ouyang, Yuyuan Zeng, Hang Su, Zihao He, Shu-Tao Xia, Jun Zhu, Bo Zhang

Most existing works attempt post-hoc interpretation on a pre-trained model, while neglecting to reduce the entanglement underlying the model.

Object Localization

RobFR: Benchmarking Adversarial Robustness on Face Recognition

2 code implementations8 Jul 2020 Xiao Yang, Dingcheng Yang, Yinpeng Dong, Hang Su, Wenjian Yu, Jun Zhu

Based on large-scale evaluations, the commercial FR API services fail to exhibit acceptable performance on robustness evaluation, and we also draw several important conclusions for understanding the adversarial robustness of FR models and providing insights for the design of robust FR models.

Adversarial Robustness Benchmarking +1

Towards Face Encryption by Generating Adversarial Identity Masks

1 code implementation ICCV 2021 Xiao Yang, Yinpeng Dong, Tianyu Pang, Hang Su, Jun Zhu, Yuefeng Chen, Hui Xue

As billions of personal data being shared through social media and network, the data privacy and security have drawn an increasing attention.

Face Recognition

Triple Memory Networks: a Brain-Inspired Method for Continual Learning

1 code implementation6 Mar 2020 Liyuan Wang, Bo Lei, Qian Li, Hang Su, Jun Zhu, Yi Zhong

Continual acquisition of novel experience without interfering previously learned knowledge, i. e. continual learning, is critical for artificial neural networks, but limited by catastrophic forgetting.

Attribute Class Incremental Learning +2

A Robust Imbalanced SAR Image Change Detection Approach Based on Deep Difference Image and PCANet

no code implementations3 Mar 2020 Xinzheng Zhang, Hang Su, Ce Zhang, Peter M. Atkinson, Xiaoheng Tan, Xiaoping Zeng, Xin Jian

Parallel FCM are utilized on these two mapped DDIs to obtain three types of pseudo-label pixels, namely, changed pixels, unchanged pixels, and intermediate pixels.

Change Detection Clustering +1

User-Level Privacy-Preserving Federated Learning: Analysis and Performance Optimization

no code implementations29 Feb 2020 Kang Wei, Jun Li, Ming Ding, Chuan Ma, Hang Su, Bo Zhang, H. Vincent Poor

According to our analysis, the UDP framework can realize $(\epsilon_{i}, \delta_{i})$-LDP for the $i$-th MT with adjustable privacy protection levels by varying the variances of the artificial noise processes.

Federated Learning Privacy Preserving

Boosting Adversarial Training with Hypersphere Embedding

1 code implementation NeurIPS 2020 Tianyu Pang, Xiao Yang, Yinpeng Dong, Kun Xu, Jun Zhu, Hang Su

Adversarial training (AT) is one of the most effective defenses against adversarial attacks for deep learning models.

Representation Learning

Adversarial Distributional Training for Robust Deep Learning

1 code implementation NeurIPS 2020 Yinpeng Dong, Zhijie Deng, Tianyu Pang, Hang Su, Jun Zhu

Adversarial training (AT) is among the most effective techniques to improve model robustness by augmenting training data with adversarial examples.

OoDAnalyzer: Interactive Analysis of Out-of-Distribution Samples

no code implementations8 Feb 2020 Changjian Chen, Jun Yuan, Yafeng Lu, Yang Liu, Hang Su, Songtao Yuan, Shixia Liu

To better analyze and understand the OoD samples in context, we have developed a novel kNN-based grid layout algorithm motivated by Hall's theorem.

Out of Distribution (OOD) Detection

Analyzing the Noise Robustness of Deep Neural Networks

no code implementations26 Jan 2020 Kelei Cao, Mengchen Liu, Hang Su, Jing Wu, Jun Zhu, Shixia Liu

The key is to compare and analyze the datapaths of both the adversarial and normal examples.

Adversarial Attack

Adversarially Robust Neural Networks via Optimal Control: Bridging Robustness with Lyapunov Stability

no code implementations ICLR 2020 Zhiyang Chen, Hang Su

From this viewpoint, training neural nets is equivalent to finding an optimal control of the discrete dynamical system, which allows one to utilize methods of successive approximations, an optimal control algorithm based on Pontryagin's maximum principle, to train neural nets.

Adversarial Robustness

SVQN: Sequential Variational Soft Q-Learning Networks

no code implementations ICLR 2020 Shiyu Huang, Hang Su, Jun Zhu, Ting Chen

Partially Observable Markov Decision Processes (POMDPs) are popular and flexible models for real-world decision-making applications that demand the information from past observations to make optimal decisions.

Decision Making Q-Learning +2

Benchmarking Adversarial Robustness

no code implementations26 Dec 2019 Yinpeng Dong, Qi-An Fu, Xiao Yang, Tianyu Pang, Hang Su, Zihao Xiao, Jun Zhu

Deep neural networks are vulnerable to adversarial examples, which becomes one of the most important research problems in the development of deep learning.

Adversarial Attack Adversarial Robustness +2

Biometrics Recognition Using Deep Learning: A Survey

1 code implementation30 Nov 2019 Shervin Minaee, Amirali Abdolrashidi, Hang Su, Mohammed Bennamoun, David Zhang

Deep learning-based models have been very successful in achieving state-of-the-art results in many of the computer vision, speech recognition, and natural language processing tasks in the last few years.

Gait Recognition speech-recognition +1

Interpretable Disentanglement of Neural Networks by Extracting Class-Specific Subnetwork

no code implementations7 Oct 2019 Yulong Wang, Xiaolin Hu, Hang Su

We also apply extracted subnetworks in visual explanation and adversarial example detection tasks by merely replacing the original full model with class-specific subnetworks.

Disentanglement

Pruning from Scratch

1 code implementation27 Sep 2019 Yulong Wang, Xiaolu Zhang, Lingxi Xie, Jun Zhou, Hang Su, Bo Zhang, Xiaolin Hu

Network pruning is an important research field aiming at reducing computational costs of neural networks.

Network Pruning

Training Interpretable Convolutional Neural Networks towards Class-specific Filters

no code implementations25 Sep 2019 Haoyu Liang, Zhihao Ouyang, Hang Su, Yuyuan Zeng, Zihao He, Shu-Tao Xia, Jun Zhu, Bo Zhang

Convolutional neural networks (CNNs) have often been treated as “black-box” and successfully used in a range of tasks.

Improving Black-box Adversarial Attacks with a Transfer-based Prior

2 code implementations NeurIPS 2019 Shuyu Cheng, Yinpeng Dong, Tianyu Pang, Hang Su, Jun Zhu

We consider the black-box adversarial setting, where the adversary has to generate adversarial perturbations without access to the target models to compute gradients.

Boosting Generative Models by Leveraging Cascaded Meta-Models

1 code implementation11 May 2019 Fan Bao, Hang Su, Jun Zhu

Besides, our framework can be extended to semi-supervised boosting, where the boosted model learns a joint distribution of data and labels.

Pixel-Adaptive Convolutional Neural Networks

2 code implementations CVPR 2019 Hang Su, Varun Jampani, Deqing Sun, Orazio Gallo, Erik Learned-Miller, Jan Kautz

In addition, we also demonstrate that PAC can be used as a drop-in replacement for convolution layers in pre-trained networks, resulting in consistent performance improvements.

Efficient Decision-based Black-box Adversarial Attacks on Face Recognition

no code implementations CVPR 2019 Yinpeng Dong, Hang Su, Baoyuan Wu, Zhifeng Li, Wei Liu, Tong Zhang, Jun Zhu

In this paper, we evaluate the robustness of state-of-the-art face recognition models in the decision-based black-box attack setting, where the attackers have no access to the model parameters and gradients, but can only acquire hard-label predictions by sending queries to the target model.

Face Recognition

Evading Defenses to Transferable Adversarial Examples by Translation-Invariant Attacks

2 code implementations CVPR 2019 Yinpeng Dong, Tianyu Pang, Hang Su, Jun Zhu

In this paper, we propose a translation-invariant attack method to generate more transferable adversarial examples against the defense models.

Translation

Reward Shaping via Meta-Learning

no code implementations27 Jan 2019 Haosheng Zou, Tongzheng Ren, Dong Yan, Hang Su, Jun Zhu

Reward shaping is one of the most effective methods to tackle the crucial yet challenging problem of credit assignment in Reinforcement Learning (RL).

Meta-Learning Reinforcement Learning (RL)

Towards Interpretable Deep Neural Networks by Leveraging Adversarial Examples

no code implementations25 Jan 2019 Yinpeng Dong, Fan Bao, Hang Su, Jun Zhu

3) We propose to improve the consistency of neurons on adversarial example subset by an adversarial training algorithm with a consistent loss.

Analyzing the Noise Robustness of Deep Neural Networks

no code implementations9 Oct 2018 Mengchen Liu, Shixia Liu, Hang Su, Kelei Cao, Jun Zhu

Deep neural networks (DNNs) are vulnerable to maliciously generated adversarial examples.

Deep Structured Generative Models

no code implementations10 Jul 2018 Kun Xu, Haoyu Liang, Jun Zhu, Hang Su, Bo Zhang

Deep generative models have shown promising results in generating realistic images, but it is still non-trivial to generate images with complicated structures.

Open Logo Detection Challenge

2 code implementations5 Jul 2018 Hang Su, Xiatian Zhu, Shaogang Gong

In this work, we introduce a more realistic and challenging logo detection setting, called Open Logo Detection.

Interpret Neural Networks by Identifying Critical Data Routing Paths

no code implementations CVPR 2018 Yulong Wang, Hang Su, Bo Zhang, Xiaolin Hu

Interpretability of a deep neural network aims to explain the rationale behind its decisions and enable the users to understand the intelligent agents, which has become an important issue due to its importance in practical applications.

Robust and Efficient Graph Correspondence Transfer for Person Re-identification

no code implementations15 May 2018 Qin Zhou, Heng Fan, Hua Yang, Hang Su, Shibao Zheng, Shuang Wu, Haibin Ling

To address this problem, in this paper, we present a robust and efficient graph correspondence transfer (REGCT) approach for explicit spatial alignment in Re-ID.

Graph Matching Person Re-Identification

Scalable Deep Learning Logo Detection

2 code implementations30 Mar 2018 Hang Su, Shaogang Gong, Xiatian Zhu

Existing logo detection methods usually consider a small number of logo classes and limited images per class with a strong assumption of requiring tedious object bounding box annotations, therefore not scalable to real-world dynamic applications.

Incremental Learning

Weighted Bilinear Coding over Salient Body Parts for Person Re-identification

no code implementations22 Mar 2018 Zhigang Chang, Qin Zhou, Heng Fan, Hang Su, Hua Yang, Shibao Zheng, Haibin Ling

Meanwhile, a weighting scheme is applied on the bilinear coding to adaptively adjust the weights of local features at different locations based on their importance in recognition, further improving the discriminability of feature aggregation.

Person Re-Identification

Sparse Adversarial Perturbations for Videos

1 code implementation7 Mar 2018 Xingxing Wei, Jun Zhu, Hang Su

Although adversarial samples of deep neural networks (DNNs) have been intensively studied on static images, their extensions in videos are never explored.

Action Recognition Temporal Action Localization

SPLATNet: Sparse Lattice Networks for Point Cloud Processing

2 code implementations CVPR 2018 Hang Su, Varun Jampani, Deqing Sun, Subhransu Maji, Evangelos Kalogerakis, Ming-Hsuan Yang, Jan Kautz

We present a network architecture for processing point clouds that directly operates on a collection of points represented as a sparse set of samples in a high-dimensional lattice.

3D Part Segmentation 3D Semantic Segmentation

Understanding Human Behaviors in Crowds by Imitating the Decision-Making Process

no code implementations25 Jan 2018 Haosheng Zou, Hang Su, Shihong Song, Jun Zhu

Crowd behavior understanding is crucial yet challenging across a wide range of applications, since crowd behavior is inherently determined by a sequential decision-making process based on various factors, such as the pedestrians' own destinations, interaction with nearby pedestrians and anticipation of upcoming events.

Collision Avoidance Imitation Learning

Detecting Institutional Dialog Acts in Police Traffic Stops

no code implementations TACL 2018 Vinodkumar Prabhakaran, Camilla Griffiths, Hang Su, Prateek Verma, Nelson Morgan, Jennifer L. Eberhardt, Dan Jurafsky

We apply computational dialog methods to police body-worn camera footage to model conversations between police officers and community members in traffic stops.

speech-recognition Speech Recognition

Learning to Write Stylized Chinese Characters by Reading a Handful of Examples

no code implementations6 Dec 2017 Danyang Sun, Tongzheng Ren, Chongxun Li, Hang Su, Jun Zhu

Automatically writing stylized Chinese characters is an attractive yet challenging task due to its wide applicabilities.

Incorporating External Knowledge to Answer Open-Domain Visual Questions with Dynamic Memory Networks

no code implementations3 Dec 2017 Guohao Li, Hang Su, Wenwu Zhu

To address this issue, we propose a novel framework which endows the model capabilities in answering more complex questions by leveraging massive external knowledge with dynamic memory networks.

Question Answering Visual Question Answering

Boosting Adversarial Attacks with Momentum

7 code implementations CVPR 2018 Yinpeng Dong, Fangzhou Liao, Tianyu Pang, Hang Su, Jun Zhu, Xiaolin Hu, Jianguo Li

To further improve the success rates for black-box attacks, we apply momentum iterative algorithms to an ensemble of models, and show that the adversarially trained models with a strong defense ability are also vulnerable to our black-box attacks.

Adversarial Attack

End-To-End Face Detection and Cast Grouping in Movies Using Erdos-Renyi Clustering

no code implementations ICCV 2017 SouYoung Jin, Hang Su, Chris Stauffer, Erik Learned-Miller

We introduce a novel verification method, rank-1 counts verification, that has this property, and use it in a link-based clustering scheme.

Clustering Face Detection

End-to-end Face Detection and Cast Grouping in Movies Using Erdős-Rényi Clustering

no code implementations7 Sep 2017 SouYoung Jin, Hang Su, Chris Stauffer, Erik Learned-Miller

We introduce a novel verification method, rank-1 counts verification, that has this property, and use it in a link-based clustering scheme.

Clustering Face Detection

Towards Interpretable Deep Neural Networks by Leveraging Adversarial Examples

no code implementations18 Aug 2017 Yinpeng Dong, Hang Su, Jun Zhu, Fan Bao

We find that: (1) the neurons in DNNs do not truly detect semantic objects/parts, but respond to objects/parts only as recurrent discriminative patches; (2) deep visual representations are not robust distributed codes of visual concepts because the representations of adversarial images are largely not consistent with those of real images, although they have similar visual appearance, both of which are different from previous findings.

Learning Accurate Low-Bit Deep Neural Networks with Stochastic Quantization

1 code implementation3 Aug 2017 Yinpeng Dong, Renkun Ni, Jianguo Li, Yurong Chen, Jun Zhu, Hang Su

This procedure can greatly compensate the quantization error and thus yield better accuracy for low-bit DNNs.

Quantization

SAM: Semantic Attribute Modulation for Language Modeling and Style Variation

no code implementations1 Jul 2017 Wenbo Hu, Lifeng Hua, Lei LI, Hang Su, Tian Wang, Ning Chen, Bo Zhang

This paper presents a Semantic Attribute Modulation (SAM) for language modeling and style variation.

Attribute Language Modelling

Improving Interpretability of Deep Neural Networks with Semantic Information

no code implementations CVPR 2017 Yinpeng Dong, Hang Su, Jun Zhu, Bo Zhang

Interpretability of deep neural networks (DNNs) is essential since it enables users to understand the overall strengths and weaknesses of the models, conveys an understanding of how the models will behave in the future, and how to diagnose and correct potential problems.

Action Recognition Temporal Action Localization +1

Deep Learning Logo Detection with Data Expansion by Synthesising Context

no code implementations29 Dec 2016 Hang Su, Xiatian Zhu, Shaogang Gong

Logo detection in unconstrained images is challenging, particularly when only very sparse labelled training images are accessible due to high labelling costs.

Benchmarking

FLASH: Fast Bayesian Optimization for Data Analytic Pipelines

1 code implementation20 Feb 2016 Yuyu Zhang, Mohammad Taha Bahadori, Hang Su, Jimeng Sun

To achieve the best performance, it is often critical to select optimal algorithms and to set appropriate hyperparameters, which requires large computational efforts.

Bayesian Optimization

Experiments on Parallel Training of Deep Neural Network using Model Averaging

1 code implementation5 Jul 2015 Hang Su, Haoyu Chen

Data is partitioned and distributed to different nodes for local model updates, and model averaging across nodes is done every few minibatches.

Active Sample Selection and Correction Propagation on a Gradually-Augmented Graph

no code implementations CVPR 2015 Hang Su, Zhaozheng Yin, Takeo Kanade, Seungil Huh

When data have a complex manifold structure or the characteristics of data evolve over time, it is unrealistic to expect a graph-based semi-supervised learning method to achieve flawless classification given a small number of initial annotations.

General Classification

Multi-view Convolutional Neural Networks for 3D Shape Recognition

no code implementations ICCV 2015 Hang Su, Subhransu Maji, Evangelos Kalogerakis, Erik Learned-Miller

A longstanding question in computer vision concerns the representation of 3D shapes for recognition: should 3D shapes be represented with descriptors operating on their native 3D formats, such as voxel grid or polygon mesh, or can they be effectively represented with view-based descriptors?

3D Point Cloud Classification 3D Shape Recognition

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