Search Results for author: Xu Ouyang

Found 15 papers, 4 papers with code

Secure and Effective Data Appraisal for Machine Learning

no code implementations3 Oct 2023 Xu Ouyang, Changhong Yang, Felix Xiaozhu Lin, Yangfeng Ji

Essential for an unfettered data market is the ability to discreetly select and evaluate training data before finalizing a transaction between the data owner and model owner.

Efficient NLP Model Finetuning via Multistage Data Filtering

1 code implementation28 Jul 2022 Xu Ouyang, Shahina Mohd Azam Ansari, Felix Xiaozhu Lin, Yangfeng Ji

To this end, we set to filter training examples in a streaming fashion, in tandem with training the target model.

text-classification Text Classification

e-G2C: A 0.14-to-8.31 $μ$J/Inference NN-based Processor with Continuous On-chip Adaptation for Anomaly Detection and ECG Conversion from EGM

no code implementations24 Jul 2022 Yang Zhao, Yongan Zhang, Yonggan Fu, Xu Ouyang, Cheng Wan, Shang Wu, Anton Banta, Mathews M. John, Allison Post, Mehdi Razavi, Joseph Cavallaro, Behnaam Aazhang, Yingyan Lin

This work presents the first silicon-validated dedicated EGM-to-ECG (G2C) processor, dubbed e-G2C, featuring continuous lightweight anomaly detection, event-driven coarse/precise conversion, and on-chip adaptation.

Anomaly Detection

SuperTickets: Drawing Task-Agnostic Lottery Tickets from Supernets via Jointly Architecture Searching and Parameter Pruning

1 code implementation8 Jul 2022 Haoran You, Baopu Li, Zhanyi Sun, Xu Ouyang, Yingyan Lin

In this paper, we discover for the first time that both efficient DNNs and their lottery subnetworks (i. e., lottery tickets) can be directly identified from a supernet, which we term as SuperTickets, via a two-in-one training scheme with jointly architecture searching and parameter pruning.

Neural Architecture Search

Drawing Robust Scratch Tickets: Subnetworks with Inborn Robustness Are Found within Randomly Initialized Networks

1 code implementation NeurIPS 2021 Yonggan Fu, Qixuan Yu, Yang Zhang, Shang Wu, Xu Ouyang, David Cox, Yingyan Lin

Deep Neural Networks (DNNs) are known to be vulnerable to adversarial attacks, i. e., an imperceptible perturbation to the input can mislead DNNs trained on clean images into making erroneous predictions.

Adversarial Robustness

Semi-supervised Domain Adaptation for Semantic Segmentation

no code implementations20 Oct 2021 Ying Chen, Xu Ouyang, Kaiyue Zhu, Gady Agam

We demonstrate that the proposed approach outperforms state-of-the-art methods on two common synthetic-to-real semantic segmentation benchmarks.

Data Augmentation Segmentation +3

Contrastive Quant: Quantization Makes Stronger Contrastive Learning

no code implementations29 Sep 2021 Yonggan Fu, Qixuan Yu, Meng Li, Xu Ouyang, Vikas Chandra, Yingyan Lin

Contrastive learning, which learns visual representations by enforcing feature consistency under different augmented views, has emerged as one of the most effective unsupervised learning methods.

Contrastive Learning Quantization

D$^2$-GCN: Data-Dependent GCNs for Boosting Both Efficiency and Scalability

no code implementations29 Sep 2021 Chaojian Li, Xu Ouyang, Yang Zhao, Haoran You, Yonggan Fu, Yuchen Gu, Haonan Liu, Siyuan Miao, Yingyan Lin

Graph Convolutional Networks (GCNs) have gained an increasing attention thanks to their state-of-the-art (SOTA) performance in graph-based learning tasks.

"BNN - BN = ?": Training Binary Neural Networks without Batch Normalization

1 code implementation16 Apr 2021 Tianlong Chen, Zhenyu Zhang, Xu Ouyang, Zechun Liu, Zhiqiang Shen, Zhangyang Wang

However, the BN layer is costly to calculate and is typically implemented with non-binary parameters, leaving a hurdle for the efficient implementation of BNN training.

Image Classification

Mask-based Data Augmentation for Semi-supervised Semantic Segmentation

no code implementations25 Jan 2021 Ying Chen, Xu Ouyang, Kaiyue Zhu, Gady Agam

Training a CNN to perform semantic segmentation requires a large amount of labeled data, where the production of such labeled data is both costly and labor intensive.

Data Augmentation Image Segmentation +2

Domain Adaptation on Semantic Segmentation for Aerial Images

no code implementations3 Dec 2020 Ying Chen, Xu Ouyang, Kaiyue Zhu, Gady Agam

In this paper, we propose a novel unsupervised domain adaptation framework to address domain shift in the context of aerial semantic image segmentation.

Image Segmentation Segmentation +2

Accelerated WGAN update strategy with loss change rate balancing

no code implementations28 Aug 2020 Xu Ouyang, Gady Agam

Optimizing the discriminator in Generative Adversarial Networks (GANs) to completion in the inner training loop is computationally prohibitive, and on finite datasets would result in overfitting.

Super-Resolution

Layered Optical Flow Estimation Using a Deep Neural Network with a Soft Mask

no code implementations9 May 2018 Xi Zhang, Di Ma, Xu Ouyang, Shanshan Jiang, Lin Gan, Gady Agam

We show that by using masks the motion estimate results in a quadratic function of input features in the output layer.

Motion Estimation Optical Flow Estimation

Lecture video indexing using boosted margin maximizing neural networks

no code implementations2 Dec 2017 Di Ma, Xi Zhang, Xu Ouyang, Gady Agam

This paper presents a novel approach for lecture video indexing using a boosted deep convolutional neural network system.

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