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Human intelligence is characterized by our ability to absorb and apply knowledge from the world around us, especially in rapidly acquiring new concepts from minimal examples, underpinned by prior knowledge. Few-shot learning (FSL) aims to…

机器学习 · 计算机科学 2024-08-20 Hui Xue , Yuexuan An , Yongchun Qin , Wenqian Li , Yixin Wu , Yongjuan Che , Pengfei Fang , Minling Zhang

In machine learning applications, it is common practice to feed as much information as possible. In most cases, the model can handle large data sets that allow to predict more accurately. In the presence of data scarcity, a Few-Shot…

计算机视觉与模式识别 · 计算机科学 2023-05-04 Saad Bin Ahmed , Umaid M. Zaffar , Marium Aslam , Muhammad Imran Malik

Self-supervised learning (SSL) models are vulnerable to backdoor attacks. Existing backdoor attacks that are effective in SSL often involve noticeable triggers, like colored patches or visible noise, which are vulnerable to human…

计算机视觉与模式识别 · 计算机科学 2025-04-04 Hanrong Zhang , Zhenting Wang , Boheng Li , Fulin Lin , Tingxu Han , Mingyu Jin , Chenlu Zhan , Mengnan Du , Hongwei Wang , Shiqing Ma

Traditional distributed backdoor attacks (DBA) in federated learning improve stealthiness by decomposing global triggers into sub-triggers, which however requires more poisoned data to maintian the attck strength and hence increases the…

密码学与安全 · 计算机科学 2025-11-13 Jian Wang , Hong Shen , Chan-Tong Lam

In a federated learning (FL) system, malicious participants can easily embed backdoors into the aggregated model while maintaining the model's performance on the main task. To this end, various defenses, including training stage…

机器学习 · 计算机科学 2023-05-30 Henger Li , Chen Wu , Sencun Zhu , Zizhan Zheng

While deep learning excels in computer vision tasks with abundant labeled data, its performance diminishes significantly in scenarios with limited labeled samples. To address this, Few-shot learning (FSL) enables models to perform the…

计算机视觉与模式识别 · 计算机科学 2025-02-19 Huali Xu , Shuaifeng Zhi , Shuzhou Sun , Vishal M. Patel , Li Liu

We are interested in developing a unified machine learning model over many mobile devices for practical learning tasks, where each device only has very few training data. This is a commonly encountered situation in mobile computing…

机器学习 · 计算机科学 2021-04-02 Chenyou Fan , Jianwei Huang

Federated Learning (FL), a privacy-preserving decentralized machine learning framework, has been shown to be vulnerable to backdoor attacks. Current research primarily focuses on the Single-Label Backdoor Attack (SBA), wherein adversaries…

密码学与安全 · 计算机科学 2025-03-25 Ye Li , Yanchao Zhao , Chengcheng Zhu , Jiale Zhang

Few-shot image classification aims to classify unseen classes with limited labelled samples. Recent works benefit from the meta-learning process with episodic tasks and can fast adapt to class from training to testing. Due to the limited…

计算机视觉与模式识别 · 计算机科学 2021-02-24 Da Chen , Yuefeng Chen , Yuhong Li , Feng Mao , Yuan He , Hui Xue

Few-Shot Learning (FSL) aims to improve a model's generalization capability in low data regimes. Recent FSL works have made steady progress via metric learning, meta learning, representation learning, etc. However, FSL remains challenging…

计算机视觉与模式识别 · 计算机科学 2020-11-23 Meng Ye , Xiao Lin , Giedrius Burachas , Ajay Divakaran , Yi Yao

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…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Aniruddha Saha , Ajinkya Tejankar , Soroush Abbasi Koohpayegani , Hamed Pirsiavash

Few-Shot Learning (FSL) algorithms are commonly trained through Meta-Learning (ML), which exposes models to batches of tasks sampled from a meta-dataset to mimic tasks seen during evaluation. However, the standard training procedures…

机器学习 · 计算机科学 2024-10-28 Mateusz Ochal , Massimiliano Patacchiola , Amos Storkey , Jose Vazquez , Sen Wang

Few-shot learning is an important research field of machine learning in which a classifier must be trained in such a way that it can adapt to new classes which are not included in the training set. However, only small amounts of examples of…

机器学习 · 计算机科学 2020-06-11 Andrei Boiarov , Oleg Granichin , Olga Granichina

Federated Self-Supervised Learning (FSSL) integrates the privacy advantages of distributed training with the capability of self-supervised learning to leverage unlabeled data, showing strong potential across applications. However, recent…

密码学与安全 · 计算机科学 2026-02-06 Jiayao Wang , Yiping Zhang , Jiale Zhang , Wenliang Yuan , Qilin Wu , Junwu Zhu , Dongfang Zhao

Few-shot learning (FSL) aims to learn models that generalize to novel classes with limited training samples. Recent works advance FSL towards a scenario where unlabeled examples are also available and propose semi-supervised FSL methods.…

计算机视觉与模式识别 · 计算机科学 2024-10-31 Linglan Zhao , Dashan Guo , Yunlu Xu , Liang Qiao , Zhanzhan Cheng , Shiliang Pu , Yi Niu , Xiangzhong Fang

Backdoor attacks inject poisoning samples during training, with the goal of forcing a machine learning model to output an attacker-chosen class when presented a specific trigger at test time. Although backdoor attacks have been demonstrated…

Deep neural networks (DNNs) are vulnerable to backdoor attacks, where the adversary manipulates a small portion of training data such that the victim model predicts normally on the benign samples but classifies the triggered samples as the…

计算机视觉与模式识别 · 计算机科学 2024-06-07 Yinghua Gao , Yiming Li , Xueluan Gong , Zhifeng Li , Shu-Tao Xia , Qian Wang

Semi-supervised machine learning (SSL) is gaining popularity as it reduces the cost of training ML models. It does so by using very small amounts of (expensive, well-inspected) labeled data and large amounts of (cheap, non-inspected)…

密码学与安全 · 计算机科学 2022-11-02 Virat Shejwalkar , Lingjuan Lyu , Amir Houmansadr

Deep learning models are vulnerable to backdoor attacks, where adversaries inject malicious functionality during training that activates on trigger inputs at inference time. Extensive research has focused on developing stealthy backdoor…

密码学与安全 · 计算机科学 2024-11-26 Jeongjin Shin , Sangdon Park

Contrastive Learning (CL) has attracted enormous attention due to its remarkable capability in unsupervised representation learning. However, recent works have revealed the vulnerability of CL to backdoor attacks: the feature extractor…

密码学与安全 · 计算机科学 2024-04-12 Weiyu Sun , Xinyu Zhang , Hao Lu , Yingcong Chen , Ting Wang , Jinghui Chen , Lu Lin