Search Results for author: Yimeng Zhang

Found 20 papers, 8 papers with code

The Power of Few: Accelerating and Enhancing Data Reweighting with Coreset Selection

no code implementations18 Mar 2024 Mohammad Jafari, Yimeng Zhang, Yihua Zhang, Sijia Liu

As machine learning tasks continue to evolve, the trend has been to gather larger datasets and train increasingly larger models.

Computational Efficiency

UnlearnCanvas: A Stylized Image Dataset to Benchmark Machine Unlearning for Diffusion Models

1 code implementation19 Feb 2024 Yihua Zhang, Yimeng Zhang, Yuguang Yao, Jinghan Jia, Jiancheng Liu, Xiaoming Liu, Sijia Liu

The rapid advancement of diffusion models (DMs) has not only transformed various real-world industries but has also introduced negative societal concerns, including the generation of harmful content, copyright disputes, and the rise of stereotypes and biases.

Machine Unlearning Style Transfer

Revisiting Zeroth-Order Optimization for Memory-Efficient LLM Fine-Tuning: A Benchmark

1 code implementation18 Feb 2024 Yihua Zhang, Pingzhi Li, Junyuan Hong, Jiaxiang Li, Yimeng Zhang, Wenqing Zheng, Pin-Yu Chen, Jason D. Lee, Wotao Yin, Mingyi Hong, Zhangyang Wang, Sijia Liu, Tianlong Chen

In the evolving landscape of natural language processing (NLP), fine-tuning pre-trained Large Language Models (LLMs) with first-order (FO) optimizers like SGD and Adam has become standard.

Benchmarking

To Generate or Not? Safety-Driven Unlearned Diffusion Models Are Still Easy To Generate Unsafe Images ... For Now

1 code implementation18 Oct 2023 Yimeng Zhang, Jinghan Jia, Xin Chen, Aochuan Chen, Yihua Zhang, Jiancheng Liu, Ke Ding, Sijia Liu

Our results demonstrate the effectiveness and efficiency merits of UnlearnDiffAtk over the state-of-the-art adversarial prompt generation method and reveal the lack of robustness of current safety-driven unlearning techniques when applied to DMs.

Adversarial Robustness Benchmarking +1

DeepZero: Scaling up Zeroth-Order Optimization for Deep Model Training

1 code implementation3 Oct 2023 Aochuan Chen, Yimeng Zhang, Jinghan Jia, James Diffenderfer, Jiancheng Liu, Konstantinos Parasyris, Yihua Zhang, Zheng Zhang, Bhavya Kailkhura, Sijia Liu

Our extensive experiments show that DeepZero achieves state-of-the-art (SOTA) accuracy on ResNet-20 trained on CIFAR-10, approaching FO training performance for the first time.

Adversarial Defense Computational Efficiency +1

Coarse Information Design

no code implementations29 May 2023 Qianjun Lyu, Wing Suen, Yimeng Zhang

We study an information design problem with continuous state and discrete signal space.

Text-Visual Prompting for Efficient 2D Temporal Video Grounding

1 code implementation CVPR 2023 Yimeng Zhang, Xin Chen, Jinghan Jia, Sijia Liu, Ke Ding

In this paper, we study the problem of temporal video grounding (TVG), which aims to predict the starting/ending time points of moments described by a text sentence within a long untrimmed video.

Sentence Video Grounding +1

Semantic Communication for Internet of Vehicles: A Multi-User Cooperative Approach

no code implementations6 Dec 2022 Wenjun Xu, Yimeng Zhang, Fengyu Wang, Zhijin Qin, Chenyao Liu, Ping Zhang

Internet of Vehicles (IoV) is expected to become the central infrastructure to provide advanced services to connected vehicles and users for higher transportation efficiency and security.

Image Retrieval Retrieval

On the Robustness of deep learning-based MRI Reconstruction to image transformations

no code implementations9 Nov 2022 Jinghan Jia, Mingyi Hong, Yimeng Zhang, Mehmet Akçakaya, Sijia Liu

We find a new instability source of MRI image reconstruction, i. e., the lack of reconstruction robustness against spatial transformations of an input, e. g., rotation and cutout.

Image Classification MRI Reconstruction

Data-Model-Circuit Tri-Design for Ultra-Light Video Intelligence on Edge Devices

no code implementations16 Oct 2022 Yimeng Zhang, Akshay Karkal Kamath, Qiucheng Wu, Zhiwen Fan, Wuyang Chen, Zhangyang Wang, Shiyu Chang, Sijia Liu, Cong Hao

In this paper, we propose a data-model-hardware tri-design framework for high-throughput, low-cost, and high-accuracy multi-object tracking (MOT) on High-Definition (HD) video stream.

Model Compression Multi-Object Tracking

How to Robustify Black-Box ML Models? A Zeroth-Order Optimization Perspective

1 code implementation ICLR 2022 Yimeng Zhang, Yuguang Yao, Jinghan Jia, JinFeng Yi, Mingyi Hong, Shiyu Chang, Sijia Liu

To tackle this problem, we next propose to prepend an autoencoder (AE) to a given (black-box) model so that DS can be trained using variance-reduced ZO optimization.

Adversarial Robustness Image Classification +1

Reverse Engineering of Imperceptible Adversarial Image Perturbations

2 code implementations ICLR 2022 Yifan Gong, Yuguang Yao, Yize Li, Yimeng Zhang, Xiaoming Liu, Xue Lin, Sijia Liu

However, carefully crafted, tiny adversarial perturbations are difficult to recover by optimizing a unilateral RED objective.

Data Augmentation Image Denoising

Recurrent networks improve neural response prediction and provide insights into underlying cortical circuits

no code implementations2 Oct 2021 Yimeng Zhang, Harold Rockwell, Sicheng Dai, Ge Huang, Stephen Tsou, Yuanyuan Wei, Tai Sing Lee

Feedforward CNN models have proven themselves in recent years as state-of-the-art models for predicting single-neuron responses to natural images in early visual cortical neurons.

Recurrent Feedback Improves Feedforward Representations in Deep Neural Networks

no code implementations22 Dec 2019 Siming Yan, Xuyang Fang, Bowen Xiao, Harold Rockwell, Yimeng Zhang, Tai Sing Lee

The abundant recurrent horizontal and feedback connections in the primate visual cortex are thought to play an important role in bringing global and semantic contextual information to early visual areas during perceptual inference, helping to resolve local ambiguity and fill in missing details.

Complexity and Diversity in Sparse Code Priors Improve Receptive Field Characterization of Macaque V1 Neurons

no code implementations19 Nov 2019 Ziniu Wu, Harold Rockwell, Yimeng Zhang, Shiming Tang, Tai Sing Lee

System identification techniques -- projection pursuit regression models (PPRs) and convolutional neural networks (CNNs) -- provide state-of-the-art performance in predicting visual cortical neurons' responses to arbitrary input stimuli.

Learning Robust Object Recognition Using Composed Scenes from Generative Models

no code implementations22 May 2017 Hao Wang, Xingyu Lin, Yimeng Zhang, Tai Sing Lee

Trained on imagined occluded scenarios under the object persistence constraint, our network discovered more subtle and localized image features that were neglected by the original network for object classification, obtaining better separability of different object classes in the feature space.

Object Object Recognition

Transfer of View-manifold Learning to Similarity Perception of Novel Objects

no code implementations31 Mar 2017 Xingyu Lin, Hao Wang, Zhihao LI, Yimeng Zhang, Alan Yuille, Tai Sing Lee

We develop a model of perceptual similarity judgment based on re-training a deep convolution neural network (DCNN) that learns to associate different views of each 3D object to capture the notion of object persistence and continuity in our visual experience.

Metric Learning Object

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