Search Results for author: Yanzhao Wu

Found 29 papers, 23 papers with code

On the Efficiency of Privacy Attacks in Federated Learning

no code implementations15 Apr 2024 Nawrin Tabassum, Ka-Ho Chow, Xuyu Wang, Wenbin Zhang, Yanzhao Wu

Second, we propose three early-stopping techniques to effectively reduce the computational costs of these privacy attacks.

Federated Learning

Security and Privacy Challenges of Large Language Models: A Survey

no code implementations30 Jan 2024 Badhan Chandra Das, M. Hadi Amini, Yanzhao Wu

We assess the extent of LLM vulnerabilities, investigate emerging security and privacy attacks for LLMs, and review the potential defense mechanisms.

Data Poisoning Question Answering

Hierarchical Pruning of Deep Ensembles with Focal Diversity

1 code implementation17 Nov 2023 Yanzhao Wu, Ka-Ho Chow, Wenqi Wei, Ling Liu

This paper presents a novel deep ensemble pruning approach, which can efficiently identify smaller deep ensembles and provide higher ensemble accuracy than the entire deep ensemble of a large number of member networks.

Decision Making Ensemble Pruning

Privacy Risks Analysis and Mitigation in Federated Learning for Medical Images

1 code implementation11 Nov 2023 Badhan Chandra Das, M. Hadi Amini, Yanzhao Wu

Federated learning (FL) is gaining increasing popularity in the medical domain for analyzing medical images, which is considered an effective technique to safeguard sensitive patient data and comply with privacy regulations.

Federated Learning

Exploring Model Learning Heterogeneity for Boosting Ensemble Robustness

1 code implementation3 Oct 2023 Yanzhao Wu, Ka-Ho Chow, Wenqi Wei, Ling Liu

We show that this two-tier heterogeneity driven ensemble construction method can compose an ensemble team that promotes high ensemble diversity and low negative correlation among member models of the ensemble, strengthening ensemble robustness against both negative examples and adversarial attacks.

object-detection Object Detection +1

Invisible Watermarking for Audio Generation Diffusion Models

2 code implementations22 Sep 2023 Xirong Cao, Xiang Li, Divyesh Jadav, Yanzhao Wu, Zhehui Chen, Chen Zeng, Wenqi Wei

Diffusion models have gained prominence in the image domain for their capabilities in data generation and transformation, achieving state-of-the-art performance in various tasks in both image and audio domains.

Audio Generation

Rethinking Learning Rate Tuning in the Era of Large Language Models

1 code implementation16 Sep 2023 Hongpeng Jin, Wenqi Wei, Xuyu Wang, Wenbin Zhang, Yanzhao Wu

Second, we present LRBench++ to benchmark learning rate policies and facilitate learning rate tuning for both traditional DNNs and LLMs.

Securing Distributed SGD against Gradient Leakage Threats

1 code implementation10 May 2023 Wenqi Wei, Ling Liu, Jingya Zhou, Ka-Ho Chow, Yanzhao Wu

Next, we present a gradient leakage resilient approach to securing distributed SGD in federated learning, with differential privacy controlled noise as the tool.

Federated Learning

STDLens: Model Hijacking-Resilient Federated Learning for Object Detection

1 code implementation CVPR 2023 Ka-Ho Chow, Ling Liu, Wenqi Wei, Fatih Ilhan, Yanzhao Wu

Based on the insights, we introduce a three-tier forensic framework to identify and expel Trojaned gradients and reclaim the performance over the course of FL.

Federated Learning object-detection +1

Adaptive Deep Neural Network Inference Optimization with EENet

1 code implementation15 Jan 2023 Fatih Ilhan, Ka-Ho Chow, Sihao Hu, Tiansheng Huang, Selim Tekin, Wenqi Wei, Yanzhao Wu, Myungjin Lee, Ramana Kompella, Hugo Latapie, Gaowen Liu, Ling Liu

Instead of having every sample go through all DNN layers during prediction, EENet learns an early exit scheduler, which can intelligently terminate the inference earlier for certain predictions, which the model has high confidence of early exit.

Inference Optimization Scheduling +1

Selecting and Composing Learning Rate Policies for Deep Neural Networks

1 code implementation24 Oct 2022 Yanzhao Wu, Ling Liu

First, we develop an LR tuning mechanism for auto-verification of a given LR policy with respect to the desired accuracy goal under the pre-defined training time constraint.

Boosting Deep Ensemble Performance with Hierarchical Pruning

1 code implementation IEEE International Conference on Data Mining (ICDM) 2021 Yanzhao Wu, Ling Liu

Evaluated using two benchmark datasets, we show that the proposed focal diversity powered hierarchical pruning can find significantly smaller ensembles of deep neural network models while achieving the same or better classification generalizability.

Decision Making Ensemble Pruning +1

Learning Text-Image Joint Embedding for Efficient Cross-Modal Retrieval with Deep Feature Engineering

1 code implementation22 Oct 2021 Zhongwei Xie, Ling Liu, Yanzhao Wu, Luo Zhong, Lin Li

This paper introduces a two-phase deep feature engineering framework for efficient learning of semantics enhanced joint embedding, which clearly separates the deep feature engineering in data preprocessing from training the text-image joint embedding model.

Cross-Modal Retrieval Feature Engineering +1

Learning TFIDF Enhanced Joint Embedding for Recipe-Image Cross-Modal Retrieval Service

1 code implementation2 Aug 2021 Zhongwei Xie, Ling Liu, Yanzhao Wu, Lin Li, Luo Zhong

We present a Multi-modal Semantics enhanced Joint Embedding approach (MSJE) for learning a common feature space between the two modalities (text and image), with the ultimate goal of providing high-performance cross-modal retrieval services.

Cross-Modal Retrieval Retrieval

Parallel Detection for Efficient Video Analytics at the Edge

1 code implementation27 Jul 2021 Yanzhao Wu, Ling Liu, Ramana Kompella

A common performance requirement in these mission-critical edge services is the near real-time latency of online object detection on edge devices.

Autonomous Driving Object +2

Gradient-Leakage Resilient Federated Learning

1 code implementation2 Jul 2021 Wenqi Wei, Ling Liu, Yanzhao Wu, Gong Su, Arun Iyengar

This paper presents a gradient leakage resilient approach to privacy-preserving federated learning with per training example-based client differential privacy, coined as Fed-CDP.

Federated Learning Privacy Preserving

Boosting Ensemble Accuracy by Revisiting Ensemble Diversity Metrics

1 code implementation CVPR 2021 Yanzhao Wu, Ling Liu, Zhongwei Xie, Ka-Ho Chow, Wenqi Wei

Our new metrics significantly improve the intrinsic correlation between high ensemble diversity and high ensemble accuracy.

Ensemble Learning Ensemble Pruning +1

Deep Ensembles with Hierarchical Diversity Pruning

1 code implementation1 Jan 2021 Yanzhao Wu, Ling Liu

(3) We introduce a two phase hierarchical pruning method to effectively identify and prune those deep ensembles with high HQ diversity scores, aiming to increase the lower and upper bounds on ensemble accuracy for the selected ensembles.

Understanding Object Detection Through An Adversarial Lens

1 code implementation11 Jul 2020 Ka-Ho Chow, Ling Liu, Mehmet Emre Gursoy, Stacey Truex, Wenqi Wei, Yanzhao Wu

We demonstrate that the proposed framework can serve as a methodical benchmark for analyzing adversarial behaviors and risks in real-time object detection systems.

Adversarial Robustness Autonomous Vehicles +3

A Framework for Evaluating Gradient Leakage Attacks in Federated Learning

2 code implementations22 Apr 2020 Wenqi Wei, Ling Liu, Margaret Loper, Ka-Ho Chow, Mehmet Emre Gursoy, Stacey Truex, Yanzhao Wu

FL offers default client privacy by allowing clients to keep their sensitive data on local devices and to only share local training parameter updates with the federated server.

Federated Learning

TOG: Targeted Adversarial Objectness Gradient Attacks on Real-time Object Detection Systems

2 code implementations9 Apr 2020 Ka-Ho Chow, Ling Liu, Mehmet Emre Gursoy, Stacey Truex, Wenqi Wei, Yanzhao Wu

The rapid growth of real-time huge data capturing has pushed the deep learning and data analytic computing to the edge systems.

Autonomous Driving Object +4

Deep Neural Network Ensembles against Deception: Ensemble Diversity, Accuracy and Robustness

no code implementations29 Aug 2019 Ling Liu, Wenqi Wei, Ka-Ho Chow, Margaret Loper, Emre Gursoy, Stacey Truex, Yanzhao Wu

In this paper we first give an overview of the concept of ensemble diversity and examine the three types of ensemble diversity in the context of DNN classifiers.

Ensemble Learning

Denoising and Verification Cross-Layer Ensemble Against Black-box Adversarial Attacks

no code implementations21 Aug 2019 Ka-Ho Chow, Wenqi Wei, Yanzhao Wu, Ling Liu

Deep neural networks (DNNs) have demonstrated impressive performance on many challenging machine learning tasks.

Denoising

A Comparative Measurement Study of Deep Learning as a Service Framework

1 code implementation29 Oct 2018 Yanzhao Wu, Ling Liu, Calton Pu, Wenqi Cao, Semih Sahin, Wenqi Wei, Qi Zhang

Big data powered Deep Learning (DL) and its applications have blossomed in recent years, fueled by three technological trends: a large amount of digitized data openly accessible, a growing number of DL software frameworks in open source and commercial markets, and a selection of affordable parallel computing hardware devices.

Adversarial Examples in Deep Learning: Characterization and Divergence

no code implementations29 Jun 2018 Wenqi Wei, Ling Liu, Margaret Loper, Stacey Truex, Lei Yu, Mehmet Emre Gursoy, Yanzhao Wu

The burgeoning success of deep learning has raised the security and privacy concerns as more and more tasks are accompanied with sensitive data.

Adversarial Attack

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