Search Results for author: Jingyi Wang

Found 32 papers, 12 papers with code

Improving Detection in Aerial Images by Capturing Inter-Object Relationships

no code implementations5 Apr 2024 Botao Ren, Botian Xu, Yifan Pu, Jingyi Wang, Zhidong Deng

In many image domains, the spatial distribution of objects in a scene exhibits meaningful patterns governed by their semantic relationships.

Tackling Noisy Labels with Network Parameter Additive Decomposition

no code implementations20 Mar 2024 Jingyi Wang, Xiaobo Xia, Long Lan, Xinghao Wu, Jun Yu, Wenjing Yang, Bo Han, Tongliang Liu

Given data with noisy labels, over-parameterized deep networks suffer overfitting mislabeled data, resulting in poor generalization.

Memorization

Feedback RoI Features Improve Aerial Object Detection

no code implementations28 Nov 2023 Botao Ren, Botian Xu, Tengyu Liu, Jingyi Wang, Zhidong Deng

Neuroscience studies have shown that the human visual system utilizes high-level feedback information to guide lower-level perception, enabling adaptation to signals of different characteristics.

feature selection Object +2

MyriadAL: Active Few Shot Learning for Histopathology

no code implementations24 Oct 2023 Nico Schiavone, Jingyi Wang, Shuangzhi Li, Roger Zemp, Xingyu Li

To this end, we introduce an active few shot learning framework, Myriad Active Learning (MAL), including a contrastive-learning encoder, pseudo-label generation, and novel query sample selection in the loop.

Active Learning Contrastive Learning +2

Improving Scene Graph Generation with Superpixel-Based Interaction Learning

no code implementations4 Aug 2023 Jingyi Wang, Can Zhang, Jinfa Huang, Botao Ren, Zhidong Deng

(ii) We explore intra-entity and cross-entity interactions among the superpixels to enrich fine-grained interactions between entities at an earlier stage.

Graph Generation Scene Graph Generation +1

Cross-Modality Time-Variant Relation Learning for Generating Dynamic Scene Graphs

1 code implementation15 May 2023 Jingyi Wang, Jinfa Huang, Can Zhang, Zhidong Deng

In this paper, we propose a Time-variant Relation-aware TRansformer (TR$^2$), which aims to model the temporal change of relations in dynamic scene graphs.

Relation Scene Graph Generation +1

FairRec: Fairness Testing for Deep Recommender Systems

1 code implementation14 Apr 2023 Huizhong Guo, Jinfeng Li, Jingyi Wang, Xiangyu Liu, Dongxia Wang, Zehong Hu, Rong Zhang, Hui Xue

Given the testing report, by adopting a simple re-ranking mitigation strategy on these identified disadvantaged groups, we show that the fairness of DRSs can be significantly improved.

Fairness Recommendation Systems +1

TESTSGD: Interpretable Testing of Neural Networks Against Subtle Group Discrimination

no code implementations24 Aug 2022 Mengdi Zhang, Jun Sun, Jingyi Wang, Bing Sun

The experiment results show that TESTSGDis effective and efficient in identifying and measuring such subtle group discrimination that has never been revealed before.

Face Recognition Fairness +2

VeriFi: Towards Verifiable Federated Unlearning

no code implementations25 May 2022 Xiangshan Gao, Xingjun Ma, Jingyi Wang, Youcheng Sun, Bo Li, Shouling Ji, Peng Cheng, Jiming Chen

One desirable property for FL is the implementation of the right to be forgotten (RTBF), i. e., a leaving participant has the right to request to delete its private data from the global model.

Federated Learning

Repairing Adversarial Texts through Perturbation

no code implementations29 Dec 2021 Guoliang Dong, Jingyi Wang, Jun Sun, Sudipta Chattopadhyay, Xinyu Wang, Ting Dai, Jie Shi, Jin Song Dong

Furthermore, such attacks are impossible to eliminate, i. e., the adversarial perturbation is still possible after applying mitigation methods such as adversarial training.

Adversarial Text

NeuronFair: Interpretable White-Box Fairness Testing through Biased Neuron Identification

1 code implementation25 Dec 2021 Haibin Zheng, Zhiqing Chen, Tianyu Du, Xuhong Zhang, Yao Cheng, Shouling Ji, Jingyi Wang, Yue Yu, Jinyin Chen

To overcome the challenges, we propose NeuronFair, a new DNN fairness testing framework that differs from previous work in several key aspects: (1) interpretable - it quantitatively interprets DNNs' fairness violations for the biased decision; (2) effective - it uses the interpretation results to guide the generation of more diverse instances in less time; (3) generic - it can handle both structured and unstructured data.

Fairness

Fairness Testing of Deep Image Classification with Adequacy Metrics

no code implementations17 Nov 2021 Peixin Zhang, Jingyi Wang, Jun Sun, Xinyu Wang

DeepFAIT consists of several important components enabling effective fairness testing of deep image classification applications: 1) a neuron selection strategy to identify the fairness-related neurons; 2) a set of multi-granularity adequacy metrics to evaluate the model's fairness; 3) a test selection algorithm for fixing the fairness issues efficiently.

Classification Face Recognition +2

EllipseNet: Anchor-Free Ellipse Detection for Automatic Cardiac Biometrics in Fetal Echocardiography

1 code implementation26 Sep 2021 Jiancong Chen, Yingying Zhang, Jingyi Wang, Xiaoxue Zhou, Yihua He, Tong Zhang

In this paper, we present an anchor-free ellipse detection network, namely EllipseNet, which detects the cardiac and thoracic regions in ellipse and automatically calculates the CTR and cardiac axis for fetal cardiac biometrics in 4-chamber view.

Automatic Fairness Testing of Neural Classifiers through Adversarial Sampling

no code implementations17 Jul 2021 Peixin Zhang, Jingyi Wang, Jun Sun, Xinyu Wang, Guoliang Dong, Xingen Wang, Ting Dai, Jin Song Dong

In this work, we bridge the gap by proposing a scalable and effective approach for systematically searching for discriminatory samples while extending existing fairness testing approaches to address a more challenging domain, i. e., text classification.

Fairness text-classification +1

Adversarial Attacks and Mitigation for Anomaly Detectors of Cyber-Physical Systems

no code implementations22 May 2021 Yifan Jia, Jingyi Wang, Christopher M. Poskitt, Sudipta Chattopadhyay, Jun Sun, Yuqi Chen

The threats faced by cyber-physical systems (CPSs) in critical infrastructure have motivated research into a multitude of attack detection mechanisms, including anomaly detectors based on neural network models.

Adversarial Attack

Attack as Defense: Characterizing Adversarial Examples using Robustness

1 code implementation13 Mar 2021 Zhe Zhao, Guangke Chen, Jingyi Wang, Yiwei Yang, Fu Song, Jun Sun

Though various defense mechanisms have been proposed to improve robustness of deep learning software, many of them are ineffective against adaptive attacks.

Disk, Corona, Jet Connection in the Intermediate State of MAXI J1820+070 Revealed by NICER Spectral-Timing Analysis

no code implementations9 Mar 2021 Jingyi Wang, Guglielmo Mastroserio, Erin Kara, Javier García, Adam Ingram, Riley Connors, Michiel van der Klis, Thomas Dauser, James Steiner, Douglas Buisson, Jeroen Homan, Matteo Lucchini, Andrew Fabian, Joe Bright, Rob Fender, Edward Cackett, Ron Remillard

We find the corona expansion (as probed by reverberation) precedes a radio flare by ~5 days, which may suggest that the hard-to-soft transition is marked by the corona expanding vertically and launching a jet knot that propagates along the jet stream at relativistic velocities.

High Energy Astrophysical Phenomena

A Deep Graph Wavelet Convolutional Neural Network for Semi-supervised Node Classification

1 code implementation19 Feb 2021 Jingyi Wang, Zhidong Deng

Graph convolutional neural network provides good solutions for node classification and other tasks with non-Euclidean data.

General Classification Node Classification

RobOT: Robustness-Oriented Testing for Deep Learning Systems

1 code implementation11 Feb 2021 Jingyi Wang, Jialuo Chen, Youcheng Sun, Xingjun Ma, Dongxia Wang, Jun Sun, Peng Cheng

A key part of RobOT is a quantitative measurement on 1) the value of each test case in improving model robustness (often via retraining), and 2) the convergence quality of the model robustness improvement.

Software Engineering

Towards Repairing Neural Networks Correctly

no code implementations3 Dec 2020 Guoliang Dong, Jun Sun, Jingyi Wang, Xinyu Wang, Ting Dai

Neural networks are increasingly applied to support decision making in safety-critical applications (like autonomous cars, unmanned aerial vehicles and face recognition based authentication).

Decision Making Face Recognition

Improving Neural Network Verification through Spurious Region Guided Refinement

1 code implementation15 Oct 2020 Pengfei Yang, Renjue Li, Jianlin Li, Cheng-Chao Huang, Jingyi Wang, Jun Sun, Bai Xue, Lijun Zhang

The core idea is to make use of the obtained constraints of the abstraction to infer new bounds for the neurons.

Towards Plausible Differentially Private ADMM Based Distributed Machine Learning

no code implementations11 Aug 2020 Jiahao Ding, Jingyi Wang, Guannan Liang, Jinbo Bi, Miao Pan

In PP-ADMM, each agent approximately solves a perturbed optimization problem that is formulated from its local private data in an iteration, and then perturbs the approximate solution with Gaussian noise to provide the DP guarantee.

BIG-bench Machine Learning

There is Limited Correlation between Coverage and Robustness for Deep Neural Networks

no code implementations14 Nov 2019 Yizhen Dong, Peixin Zhang, Jingyi Wang, Shuang Liu, Jun Sun, Jianye Hao, Xinyu Wang, Li Wang, Jin Song Dong, Dai Ting

In this work, we conduct an empirical study to evaluate the relationship between coverage, robustness and attack/defense metrics for DNN.

Face Recognition Malware Detection

Towards Interpreting Recurrent Neural Networks through Probabilistic Abstraction

1 code implementation22 Sep 2019 Guoliang Dong, Jingyi Wang, Jun Sun, Yang Zhang, Xinyu Wang, Ting Dai, Jin Song Dong, Xingen Wang

In this work, we propose an approach to extract probabilistic automata for interpreting an important class of neural networks, i. e., recurrent neural networks.

Machine Translation Object Recognition

Adversarial Sample Detection for Deep Neural Network through Model Mutation Testing

5 code implementations14 Dec 2018 Jingyi Wang, Guoliang Dong, Jun Sun, Xinyu Wang, Peixin Zhang

We thus first propose a measure of `sensitivity' and show empirically that normal samples and adversarial samples have distinguishable sensitivity.

Two-sample testing

Detecting Adversarial Samples for Deep Neural Networks through Mutation Testing

no code implementations14 May 2018 Jingyi Wang, Jun Sun, Peixin Zhang, Xinyu Wang

Recently, it has been shown that deep neural networks (DNN) are subject to attacks through adversarial samples.

Toward `verifying' a Water Treatment System

no code implementations12 Dec 2017 Jingyi Wang, Jun Sun, Yifan Jia, Shengchao Qin, Zhiwu Xu

As the system is too complicated to be manually modeled, we apply latest automatic model learning techniques to construct a set of Markov chains through abstraction and refinement, based on two long system execution logs (one for training and the other for testing).

Automatically 'Verifying' Discrete-Time Complex Systems through Learning, Abstraction and Refinement

2 code implementations20 Oct 2016 Jingyi Wang, Jun Sun, Shengchao Qin, Cyrille Jegourel

The other is a probabilistic model based on which the given property is `verified'.

Software Engineering

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