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Existing approaches towards anomaly detection~(AD) often rely on a substantial amount of anomaly-free data to train representation and density models. However, large anomaly-free datasets may not always be available before the inference…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Jingyi Liao , Xun Xu , Manh Cuong Nguyen , Adam Goodge , Chuan Sheng Foo

Few-shot learning is a problem of high interest in the evolution of deep learning. In this work, we consider the problem of few-shot object detection (FSOD) in a real-world, class-imbalanced scenario. For our experiments, we utilize the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-18 Anay Majee , Kshitij Agrawal , Anbumani Subramanian

Despite the recent developments in vision-related problems using deep neural networks, there still remains a wide scope in the improvement of generalizing these models to unseen examples. In this paper, we explore the domain of few-shot…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Rohit Jena , Shirsendu Sukanta Halder , Katia Sycara

Graph anomaly detection has long been an important problem in various domains pertaining to information security such as financial fraud, social spam and network intrusion. The majority of existing methods are performed in an unsupervised…

Machine Learning · Computer Science 2024-08-27 Xiongxiao Xu , Kaize Ding , Canyu Chen , Kai Shu

Projected Gradient Descent (PGD) is a strong and widely used first-order adversarial attack, yet its computational cost scales poorly, as all training samples undergo identical iterative inner-loop optimization despite contributing…

Machine Learning · Computer Science 2025-12-29 Youran Ye , Dejin Wang , Ajinkya Bhandare

Recent advances in deep domain adaptation reveal that adversarial learning can be embedded into deep networks to learn transferable features that reduce distribution discrepancy between the source and target domains. Existing domain…

Computer Vision and Pattern Recognition · Computer Science 2018-09-10 Zhongyi Pei , Zhangjie Cao , Mingsheng Long , Jianmin Wang

Few-shot learning is a challenging task since only few instances are given for recognizing an unseen class. One way to alleviate this problem is to acquire a strong inductive bias via meta-learning on similar tasks. In this paper, we show…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Wentao Chen , Chenyang Si , Wei Wang , Liang Wang , Zilei Wang , Tieniu Tan

The core idea of metric-based few-shot image classification is to directly measure the relations between query images and support classes to learn transferable feature embeddings. Previous work mainly focuses on image-level feature…

Computer Vision and Pattern Recognition · Computer Science 2020-02-04 Wenbin Li , Lei Wang , Jing Huo , Yinghuan Shi , Yang Gao , Jiebo Luo

Few-shot object detection (FSOD) aims to detect never-seen objects using few examples. This field sees recent improvement owing to the meta-learning techniques by learning how to match between the query image and few-shot class examples,…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Guangxing Han , Yicheng He , Shiyuan Huang , Jiawei Ma , Shih-Fu Chang

Few-shot classification is a challenging problem due to the uncertainty caused by using few labelled samples. In the past few years, many methods have been proposed with the common aim of transferring knowledge acquired on a previously…

Machine Learning · Computer Science 2021-10-19 Yuqing Hu , Vincent Gripon , Stéphane Pateux

We consider imitation learning in the low-data regime, where only a limited number of expert demonstrations are available. In this setting, methods that rely on large-scale pretraining or high-capacity architectures can be difficult to…

Machine Learning · Computer Science 2025-10-01 Lionel Blondé , Joao A. Candido Ramos , Alexandros Kalousis

Few-shot image classification learns to recognize new categories from limited labelled data. Metric learning based approaches have been widely investigated, where a query sample is classified by finding the nearest prototype from the…

Computer Vision and Pattern Recognition · Computer Science 2021-06-04 Zhizheng Zhang , Cuiling Lan , Wenjun Zeng , Zhibo Chen , Shih-Fu Chang

Pretrained machine learning models need to be adapted to distribution shifts when deployed in new target environments. When obtaining labeled data from the target distribution is expensive, few-shot adaptation with only a few examples from…

Machine Learning · Computer Science 2024-05-31 Yihao Xue , Ali Payani , Yu Yang , Baharan Mirzasoleiman

Few-Shot classification aims at solving problems that only a few samples are available in the training process. Due to the lack of samples, researchers generally employ a set of training tasks from other domains to assist the target task,…

Computer Vision and Pattern Recognition · Computer Science 2022-04-04 Renjie Xu , Xinghao Yang , Baodi Liu , Kai Zhang , Weifeng Liu

Few-shot learning aims to recognize novel queries with limited support samples by learning from base knowledge. Recent progress in this setting assumes that the base knowledge and novel query samples are distributed in the same domains,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Yifan Zhao , Tong Zhang , Jia Li , Yonghong Tian

Few-shot learning is valuable in many real-world applications, but learning a generalizable model without overfitting to the few labeled datapoints is challenging. In this work, we focus on Few-shot Learning with Auxiliary Data (FLAD), a…

Machine Learning · Computer Science 2023-10-04 Alon Albalak , Colin Raffel , William Yang Wang

Efficient computation of min-max problems is a central question in optimization, learning, games, and controls. Arguably the most natural algorithm is gradient-descent-ascent (GDA). However, since the 1970s, conventional wisdom has argued…

Optimization and Control · Mathematics 2025-05-05 Henry Shugart , Jason M. Altschuler

In recent years, numerous domain adaptive strategies have been proposed to help deep learning models overcome the challenges posed by domain shift. However, even unsupervised domain adaptive strategies still require a large amount of target…

Image and Video Processing · Electrical Eng. & Systems 2024-07-11 Sumayya Inayat , Nimra Dilawar , Waqas Sultani , Mohsen Ali

Unmanned Aerial Vehicle (UAV) visual geo-localization aims to match images of the same geographic target captured from different views, i.e., the UAV view and the satellite view. It is very challenging due to the large appearance…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Cuiwei Liu , Jiahao Liu , Huaijun Qiu , Zhaokui Li , Xiangbin Shi

Few-shot learning aims to recognize instances from novel classes with few labeled samples, which has great value in research and application. Although there has been a lot of work in this area recently, most of the existing work is based on…

Computer Vision and Pattern Recognition · Computer Science 2020-10-14 Congqi Cao , Yajuan Li , Qinyi Lv , Peng Wang , Yanning Zhang