Search Results for author: Shu Hu

Found 38 papers, 18 papers with code

Robust CLIP-Based Detector for Exposing Diffusion Model-Generated Images

1 code implementation19 Apr 2024 Santosh, Li Lin, Irene Amerini, Xin Wang, Shu Hu

Diffusion models (DMs) have revolutionized image generation, producing high-quality images with applications spanning various fields.

Image Generation

Benchmarking the Robustness of UAV Tracking Against Common Corruptions

1 code implementation18 Mar 2024 Xiaoqiong Liu, Yunhe Feng, Shu Hu, Xiaohui Yuan, Heng Fan

Addressing this, we propose UAV-C, a large-scale benchmark for assessing robustness of UAV trackers under common corruptions.

Benchmarking

Robust Light-Weight Facial Affective Behavior Recognition with CLIP

1 code implementation14 Mar 2024 Li Lin, Sarah Papabathini, Xin Wang, Shu Hu

Human affective behavior analysis aims to delve into human expressions and behaviors to deepen our understanding of human emotions.

Robust COVID-19 Detection in CT Images with CLIP

1 code implementation13 Mar 2024 Li Lin, Yamini Sri Krubha, Zhenhuan Yang, Cheng Ren, Thuc Duy Le, Irene Amerini, Xin Wang, Shu Hu

In the realm of medical imaging, particularly for COVID-19 detection, deep learning models face substantial challenges such as the necessity for extensive computational resources, the paucity of well-annotated datasets, and a significant amount of unlabeled data.

Neural Radiance Fields in Medical Imaging: Challenges and Next Steps

no code implementations26 Feb 2024 Xin Wang, Shu Hu, Heng Fan, Hongtu Zhu, Xin Li

Neural Radiance Fields (NeRF), as a pioneering technique in computer vision, offer great potential to revolutionize medical imaging by synthesizing three-dimensional representations from the projected two-dimensional image data.

Masked Conditional Diffusion Model for Enhancing Deepfake Detection

no code implementations1 Feb 2024 Tiewen Chen, Shanmin Yang, Shu Hu, Zhenghan Fang, Ying Fu, Xi Wu, Xin Wang

this paper present we put a new insight into diffusion model-based data augmentation, and propose a Masked Conditional Diffusion Model (MCDM) for enhancing deepfake detection.

Data Augmentation DeepFake Detection +1

Uncertainty-Aware Explainable Recommendation with Large Language Models

no code implementations31 Jan 2024 Yicui Peng, Hao Chen, ChingSheng Lin, Guo Huang, Jinrong Hu, Hui Guo, Bin Kong, Shu Hu, Xi Wu, Xin Wang

Providing explanations within the recommendation system would boost user satisfaction and foster trust, especially by elaborating on the reasons for selecting recommended items tailored to the user.

Explainable Recommendation Multi-Task Learning

Detecting Multimedia Generated by Large AI Models: A Survey

1 code implementation22 Jan 2024 Li Lin, Neeraj Gupta, Yue Zhang, Hainan Ren, Chun-Hao Liu, Feng Ding, Xin Wang, Xin Li, Luisa Verdoliva, Shu Hu

The rapid advancement of Large AI Models (LAIMs), particularly diffusion models and large language models, has marked a new era where AI-generated multimedia is increasingly integrated into various aspects of daily life.

Efficient Image Super-Resolution via Symmetric Visual Attention Network

no code implementations17 Jan 2024 Chengxu Wu, Qinrui Fan, Shu Hu, Xi Wu, Xin Wang, Jing Hu

An important development direction in the Single-Image Super-Resolution (SISR) algorithms is to improve the efficiency of the algorithms.

Image Super-Resolution

Synthesizing Black-box Anti-forensics DeepFakes with High Visual Quality

no code implementations17 Dec 2023 Bing Fan, Shu Hu, Feng Ding

Besides, compared with the images processed by existing DeepFake anti-forensics methods, the visual qualities of anti-forensics DeepFakes rendered by the proposed method are significantly refined.

Face Swapping

UMedNeRF: Uncertainty-aware Single View Volumetric Rendering for Medical Neural Radiance Fields

no code implementations10 Nov 2023 Jing Hu, Qinrui Fan, Shu Hu, Siwei Lyu, Xi Wu, Xin Wang

In the field of clinical medicine, computed tomography (CT) is an effective medical imaging modality for the diagnosis of various pathologies.

Computed Tomography (CT)

Controlling Neural Style Transfer with Deep Reinforcement Learning

no code implementations30 Sep 2023 Chengming Feng, Jing Hu, Xin Wang, Shu Hu, Bin Zhu, Xi Wu, Hongtu Zhu, Siwei Lyu

Controlling the degree of stylization in the Neural Style Transfer (NST) is a little tricky since it usually needs hand-engineering on hyper-parameters.

reinforcement-learning Reinforcement Learning (RL) +1

Image-to-Image Translation with Deep Reinforcement Learning

1 code implementation24 Sep 2023 Xin Wang, Ziwei Luo, Jing Hu, Chengming Feng, Shu Hu, Bin Zhu, Xi Wu, Xin Li, Siwei Lyu

The key feature in the RL-I2IT framework is to decompose a monolithic learning process into small steps with a lightweight model to progressively transform a source image successively to a target image.

Auxiliary Learning Decision Making +3

Outlier Robust Adversarial Training

1 code implementation10 Sep 2023 Shu Hu, Zhenhuan Yang, Xin Wang, Yiming Ying, Siwei Lyu

Theoretically, we show that the learning objective of ORAT satisfies the $\mathcal{H}$-consistency in binary classification, which establishes it as a proper surrogate to adversarial 0/1 loss.

Adversarial Attack Binary Classification

Improving Fairness in Deepfake Detection

1 code implementation29 Jun 2023 Yan Ju, Shu Hu, Shan Jia, George H. Chen, Siwei Lyu

Despite the development of effective deepfake detectors in recent years, recent studies have demonstrated that biases in the data used to train these detectors can lead to disparities in detection accuracy across different races and genders.

DeepFake Detection Face Swapping +1

Harnessing the Power of Text-image Contrastive Models for Automatic Detection of Online Misinformation

no code implementations19 Apr 2023 Hao Chen, Peng Zheng, Xin Wang, Shu Hu, Bin Zhu, Jinrong Hu, Xi Wu, Siwei Lyu

As growing usage of social media websites in the recent decades, the amount of news articles spreading online rapidly, resulting in an unprecedented scale of potentially fraudulent information.

Contrastive Learning Misinformation +1

Attacking Important Pixels for Anchor-free Detectors

no code implementations26 Jan 2023 Yunxu Xie, Shu Hu, Xin Wang, Quanyu Liao, Bin Zhu, Xi Wu, Siwei Lyu

Existing adversarial attacks on object detection focus on attacking anchor-based detectors, which may not work well for anchor-free detectors.

Adversarial Attack object-detection +2

Distributionally Robust Survival Analysis: A Novel Fairness Loss Without Demographics

1 code implementation18 Nov 2022 Shu Hu, George H. Chen

We propose a general approach for training survival analysis models that minimizes a worst-case error across all subpopulations that are large enough (occurring with at least a user-specified minimum probability).

Fairness Survival Analysis

Rank-based Decomposable Losses in Machine Learning: A Survey

no code implementations18 Jul 2022 Shu Hu, Xin Wang, Siwei Lyu

Following these categories, we review the literature on rank-based aggregate losses and rank-based individual losses.

BIG-bench Machine Learning

Open-Eye: An Open Platform to Study Human Performance on Identifying AI-Synthesized Faces

no code implementations13 May 2022 Hui Guo, Shu Hu, Xin Wang, Ming-Ching Chang, Siwei Lyu

In this work, we develop an online platform called Open-eye to study the human performance of AI-synthesized face detection.

Face Detection

GAN-generated Faces Detection: A Survey and New Perspectives

no code implementations15 Feb 2022 Xin Wang, Hui Guo, Shu Hu, Ming-Ching Chang, Siwei Lyu

Generative Adversarial Networks (GAN) have led to the generation of very realistic face images, which have been used in fake social media accounts and other disinformation matters that can generate profound impacts.

Face Detection

Differentially Private SGDA for Minimax Problems

no code implementations22 Jan 2022 Zhenhuan Yang, Shu Hu, Yunwen Lei, Kush R. Varshney, Siwei Lyu, Yiming Ying

We further provide its utility analysis in the nonconvex-strongly-concave setting which is the first-ever-known result in terms of the primal population risk.

Robust Attentive Deep Neural Network for Exposing GAN-generated Faces

no code implementations5 Sep 2021 Hui Guo, Shu Hu, Xin Wang, Ming-Ching Chang, Siwei Lyu

However, images from existing public datasets do not represent real-world scenarios well enough in terms of view variations and data distributions (where real faces largely outnumber synthetic faces).

Face Detection

Eyes Tell All: Irregular Pupil Shapes Reveal GAN-generated Faces

no code implementations1 Sep 2021 Hui Guo, Shu Hu, Xin Wang, Ming-Ching Chang, Siwei Lyu

Generative adversary network (GAN) generated high-realistic human faces have been used as profile images for fake social media accounts and are visually challenging to discern from real ones.

T$_k$ML-AP: Adversarial Attacks to Top-$k$ Multi-Label Learning

1 code implementation31 Jul 2021 Shu Hu, Lipeng Ke, Xin Wang, Siwei Lyu

Top-$k$ multi-label learning, which returns the top-$k$ predicted labels from an input, has many practical applications such as image annotation, document analysis, and web search engine.

Multi-Label Learning

Sum of Ranked Range Loss for Supervised Learning

1 code implementation7 Jun 2021 Shu Hu, Yiming Ying, Xin Wang, Siwei Lyu

A combination loss of AoRR and TKML is proposed as a new learning objective for improving the robustness of multi-label learning in the face of outliers in sample and labels alike.

Multi-class Classification Multi-Label Learning

TkML-AP: Adversarial Attacks to Top-k Multi-Label Learning

1 code implementation ICCV 2021 Shu Hu, Lipeng Ke, Xin Wang, Siwei Lyu

Top-k multi-label learning, which returns the top-k predicted labels from an input, has many practical applications such as image annotation, document analysis, and web search engine.

Multi-Label Learning

Uncertainty Aware Semi-Supervised Learning on Graph Data

1 code implementation NeurIPS 2020 Xujiang Zhao, Feng Chen, Shu Hu, Jin-Hee Cho

To clarify the reasons behind the results, we provided the theoretical proof that explains the relationships between different types of uncertainties considered in this work.

Node Classification Out of Distribution (OOD) Detection

Learning by Minimizing the Sum of Ranked Range

1 code implementation NeurIPS 2020 Shu Hu, Yiming Ying, Xin Wang, Siwei Lyu

In forming learning objectives, one oftentimes needs to aggregate a set of individual values to a single output.

Binary Classification General Classification +2

Exposing GAN-generated Faces Using Inconsistent Corneal Specular Highlights

1 code implementation24 Sep 2020 Shu Hu, Yuezun Li, Siwei Lyu

We show that such artifacts exist widely in high-quality GAN synthesized faces and further describe an automatic method to extract and compare corneal specular highlights from two eyes.

Uncertainty-Aware Prediction for Graph Neural Networks

no code implementations25 Sep 2019 Xujiang Zhao, Feng Chen, Shu Hu, Jin-Hee Cho

In this work, we propose a Bayesian deep learning framework reflecting various types of uncertainties for classification predictions by leveraging the powerful modeling and learning capabilities of GNNs.

Classification Node Classification +1

ParallelPC: an R package for efficient constraint based causal exploration

no code implementations11 Oct 2015 Thuc Duy Le, Tao Hoang, Jiuyong Li, Lin Liu, Shu Hu

Discovering causal relationships from data is the ultimate goal of many research areas.

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