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Metric-based few-shot fine-grained image classification (FSFGIC) aims to learn a transferable feature embedding network by estimating the similarities between query images and support classes from very few examples. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Weichuan Zhang , Xuefang Liu , Zhe Xue , Yongsheng Gao , Changming Sun

Few-shot learning methods aim to embed the data to a low-dimensional embedding space and then classify the unseen query data to the seen support set. While these works assume that the support set and the query set lie in the same embedding…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Siyang Jiang , Wei Ding , Hsi-Wen Chen , Ming-Syan Chen

Nearest neighbors (NN) are traditionally used to compute final decisions, e.g., in Support Vector Machines or k-NN classifiers, and to provide users with explanations for the model's decision. In this paper, we show a novel utility of…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Giang , Nguyen , Valerie Chen , Mohammad Reza Taesiri , Anh Totti Nguyen

Few-shot learning aims to recognize new categories using very few labeled samples. Although few-shot learning has witnessed promising development in recent years, most existing methods adopt an average operation to calculate prototypes,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-26 Minglei Yuan , Wenhai Wang , Tao Wang , Chunhao Cai , Qian Xu , Tong Lu

We consider the few-shot classification task with an unbalanced dataset, in which some classes have sufficient training samples while other classes only have limited training samples. Recent works have proposed to solve this task by…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Vivek Roy , Yan Xu , Yu-Xiong Wang , Kris Kitani , Ruslan Salakhutdinov , Martial Hebert

Few-shot detection and classification have advanced significantly in recent years. Yet, detection approaches require strong annotation (bounding boxes) both for pre-training and for adaptation to novel classes, and classification approaches…

Computer Vision and Pattern Recognition · Computer Science 2020-09-18 Leonid Karlinsky , Joseph Shtok , Amit Alfassy , Moshe Lichtenstein , Sivan Harary , Eli Schwartz , Sivan Doveh , Prasanna Sattigeri , Rogerio Feris , Alexander Bronstein , Raja Giryes

Autonomous agents interacting with the real world need to learn new concepts efficiently and reliably. This requires learning in a low-data regime, which is a highly challenging problem. We address this task by introducing a fast…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Ardhendu Shekhar Tripathi , Martin Danelljan , Luc Van Gool , Radu Timofte

Even though large pre-trained multilingual models (e.g. mBERT, XLM-R) have led to significant performance gains on a wide range of cross-lingual NLP tasks, success on many downstream tasks still relies on the availability of sufficient…

Computation and Language · Computer Science 2021-09-07 M Saiful Bari , Batool Haider , Saab Mansour

Few-shot dense retrieval (DR) aims to effectively generalize to novel search scenarios by learning a few samples. Despite its importance, there is little study on specialized datasets and standardized evaluation protocols. As a result,…

Computation and Language · Computer Science 2023-04-13 Si Sun , Yida Lu , Shi Yu , Xiangyang Li , Zhonghua Li , Zhao Cao , Zhiyuan Liu , Deiming Ye , Jie Bao

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 to solve few-shot classification, among which transfer-based methods have…

Machine Learning · Computer Science 2021-01-27 Yuqing Hu , Vincent Gripon , Stéphane Pateux

Few-shot classifiers have been shown to exhibit promising results in use cases where user-provided labels are scarce. These models are able to learn to predict novel classes simply by training on a non-overlapping set of classes. This can…

Machine Learning · Computer Science 2021-10-26 Yi Xiang Marcus Tan , Penny Chong , Jiamei Sun , Ngai-man Cheung , Yuval Elovici , Alexander Binder

Few-shot classification aims to adapt classifiers to novel classes with a few training samples. However, the insufficiency of training data may cause a biased estimation of feature distribution in a certain class. To alleviate this problem,…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Jing Xu , Xinglin Pan , Xu Luo , Wenjie Pei , Zenglin Xu

Many meta-learning approaches for few-shot learning rely on simple base learners such as nearest-neighbor classifiers. However, even in the few-shot regime, discriminatively trained linear predictors can offer better generalization. We…

Computer Vision and Pattern Recognition · Computer Science 2019-04-24 Kwonjoon Lee , Subhransu Maji , Avinash Ravichandran , Stefano Soatto

Few-shot classification consists of a training phase where a model is learned on a relatively large dataset and an adaptation phase where the learned model is adapted to previously-unseen tasks with limited labeled samples. In this paper,…

Machine Learning · Computer Science 2023-06-02 Xu Luo , Hao Wu , Ji Zhang , Lianli Gao , Jing Xu , Jingkuan Song

Few-shot classification involves identifying new categories using a limited number of labeled samples. Current few-shot classification methods based on local descriptors primarily leverage underlying consistent features across visible and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Bingchen Yan

We propose a method that can perform one-class classification given only a small number of examples from the target class and none from the others. We formulate the learning of meaningful features for one-class classification as a…

Computer Vision and Pattern Recognition · Computer Science 2021-04-26 Gabriel Dahia , Maurício Pamplona Segundo

Deep neural networks are highly effective when a large number of labeled samples are available but fail with few-shot classification tasks. Recently, meta-learning methods have received much attention, which train a meta-learner on massive…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Yucan Zhou , Yu Wang , Jianfei Cai , Yu Zhou , Qinghua Hu , Weiping Wang

Although few-shot learning research has advanced rapidly with the help of meta-learning, its practical usefulness is still limited because most of them assumed that all meta-training and meta-testing examples came from a single domain. We…

Machine Learning · Computer Science 2020-09-18 Yongseok Choi , Junyoung Park , Subin Yi , Dong-Yeon Cho

In cross-domain few-shot classification, \emph{nearest centroid classifier} (NCC) aims to learn representations to construct a metric space where few-shot classification can be performed by measuring the similarities between samples and the…

Machine Learning · Computer Science 2024-05-30 Hongduan Tian , Feng Liu , Tongliang Liu , Bo Du , Yiu-ming Cheung , Bo Han

Deep learning has made remarkable achievement in many fields. However, learning the parameters of neural networks usually demands a large amount of labeled data. The algorithms of deep learning, therefore, encounter difficulties when…

Computer Vision and Pattern Recognition · Computer Science 2018-10-31 Bowen Zhang , Xifan Zhang , Fan Cheng , Deli Zhao