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Self-supervised learning in computer vision aims to pre-train an image encoder using a large amount of unlabeled images or (image, text) pairs. The pre-trained image encoder can then be used as a feature extractor to build downstream…

Cryptography and Security · Computer Science 2021-08-03 Jinyuan Jia , Yupei Liu , Neil Zhenqiang Gong

Self-supervised learning is an emerging machine learning paradigm. Compared to supervised learning which leverages high-quality labeled datasets, self-supervised learning relies on unlabeled datasets to pre-train powerful encoders which can…

Cryptography and Security · Computer Science 2022-09-02 Tianshuo Cong , Xinlei He , Yang Zhang

Pre-trained encoders are general-purpose feature extractors that can be used for many downstream tasks. Recent progress in self-supervised learning can pre-train highly effective encoders using a large volume of unlabeled data, leading to…

Cryptography and Security · Computer Science 2022-07-21 Yupei Liu , Jinyuan Jia , Hongbin Liu , Neil Zhenqiang Gong

We present a framework to learn privacy-preserving encodings of images that inhibit inference of chosen private attributes, while allowing recovery of other desirable information. Rather than simply inhibiting a given fixed pre-trained…

Machine Learning · Computer Science 2018-12-06 Francesco Pittaluga , Sanjeev J. Koppal , Ayan Chakrabarti

Contrastive learning pre-trains an image encoder using a large amount of unlabeled data such that the image encoder can be used as a general-purpose feature extractor for various downstream tasks. In this work, we propose PoisonedEncoder, a…

Cryptography and Security · Computer Science 2023-01-04 Hongbin Liu , Jinyuan Jia , Neil Zhenqiang Gong

Self-supervised learning (SSL), a paradigm harnessing unlabeled datasets to train robust encoders, has recently witnessed substantial success. These encoders serve as pivotal feature extractors for downstream tasks, demanding significant…

Cryptography and Security · Computer Science 2023-12-07 Xiaobei Li , Changchun Yin , Liyue Zhu , Xiaogang Xu , Liming Fang , Run Wang , Chenhao Lin

Self-supervised learning (SSL) is a prevalent approach for encoding data representations. Using a pre-trained SSL image encoder and subsequently training a downstream classifier, impressive performance can be achieved on various tasks with…

Cryptography and Security · Computer Science 2024-07-18 Mengxin Zheng , Jiaqi Xue , Zihao Wang , Xun Chen , Qian Lou , Lei Jiang , Xiaofeng Wang

Deep neural networks usually benefit from unsupervised pre-training, e.g. auto-encoders. However, the classifier further needs supervised fine-tuning methods for good discrimination. Besides, due to the limits of full-connection, the…

Computer Vision and Pattern Recognition · Computer Science 2016-05-10 Hailin Shi , Xiangyu Zhu , Zhen Lei , Shengcai Liao , Stan Z. Li

Self-supervised models are increasingly prevalent in machine learning (ML) since they reduce the need for expensively labeled data. Because of their versatility in downstream applications, they are increasingly used as a service exposed via…

Adapting pre-trained deep learning models to customized tasks has become a popular choice for developers to cope with limited computational resources and data volume. More specifically, probing--training a downstream head on a pre-trained…

Cryptography and Security · Computer Science 2024-11-20 Ruyi Ding , Tong Zhou , Lili Su , Aidong Adam Ding , Xiaolin Xu , Yunsi Fei

Self-supervised learning in computer vision trains on unlabeled data, such as images or (image, text) pairs, to obtain an image encoder that learns high-quality embeddings for input data. Emerging backdoor attacks towards encoders expose…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Shiwei Feng , Guanhong Tao , Siyuan Cheng , Guangyu Shen , Xiangzhe Xu , Yingqi Liu , Kaiyuan Zhang , Shiqing Ma , Xiangyu Zhang

Large-scale unlabeled data has spurred recent progress in self-supervised learning methods that learn rich visual representations. State-of-the-art self-supervised methods for learning representations from images (e.g., MoCo, BYOL, MSF) use…

Computer Vision and Pattern Recognition · Computer Science 2022-06-10 Aniruddha Saha , Ajinkya Tejankar , Soroush Abbasi Koohpayegani , Hamed Pirsiavash

Transfer learning from pre-trained encoders has become essential in modern machine learning, enabling efficient model adaptation across diverse tasks. However, this combination of pre-training and downstream adaptation creates an expanded…

Machine Learning · Computer Science 2025-04-17 Yechao Zhang , Yuxuan Zhou , Tianyu Li , Minghui Li , Shengshan Hu , Wei Luo , Leo Yu Zhang

Deep neural networks are typically trained under a supervised learning framework where a model learns a single task using labeled data. Instead of relying solely on labeled data, practitioners can harness unlabeled or related data to…

Machine Learning · Computer Science 2020-07-03 Huanru Henry Mao

Despite being prevalent in the general field of Natural Language Processing (NLP), pre-trained language models inherently carry privacy and copyright concerns due to their nature of training on large-scale web-scraped data. In this paper,…

Computation and Language · Computer Science 2024-08-21 Yuan Xin , Zheng Li , Ning Yu , Dingfan Chen , Mario Fritz , Michael Backes , Yang Zhang

Semi-supervised learning methods can train high-accuracy machine learning models with a fraction of the labeled training samples required for traditional supervised learning. Such methods do not typically involve close review of the…

Machine Learning · Computer Science 2022-12-07 Marissa Connor , Vincent Emanuele

Thanks to the explosive growth of data and the development of computational resources, it is possible to build pre-trained models that can achieve outstanding performance on various tasks, such as neural language processing, computer…

Artificial Intelligence · Computer Science 2024-11-13 Meng Yang , Tianqing Zhu , Chi Liu , WanLei Zhou , Shui Yu , Philip S. Yu

Self-supervised learning (SSL) has recently received significant attention due to its ability to train high-performance encoders purely on unlabeled data-often scraped from the internet. This data can still be sensitive and empirical…

Machine Learning · Computer Science 2024-06-19 Wenhao Wang , Muhammad Ahmad Kaleem , Adam Dziedzic , Michael Backes , Nicolas Papernot , Franziska Boenisch

Self-supervised learning usually uses a large amount of unlabeled data to pre-train an encoder which can be used as a general-purpose feature extractor, such that downstream users only need to perform fine-tuning operations to enjoy the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Ziqi Zhou , Shengshan Hu , Ruizhi Zhao , Qian Wang , Leo Yu Zhang , Junhui Hou , Hai Jin

As a new paradigm in machine learning, self-supervised learning (SSL) is capable of learning high-quality representations of complex data without relying on labels. In addition to eliminating the need for labeled data, research has found…

Cryptography and Security · Computer Science 2023-08-15 Changjiang Li , Ren Pang , Zhaohan Xi , Tianyu Du , Shouling Ji , Yuan Yao , Ting Wang
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