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Deep networks can learn to accurately recognize objects of a category by training on a large number of annotated images. However, a meta-learning challenge known as a low-shot image recognition task comes when only a few images with…

Computer Vision and Pattern Recognition · Computer Science 2021-01-14 Mengting Chen , Xinggang Wang , Heng Luo , Yifeng Geng , Wenyu Liu

When trained at sufficient scale, auto-regressive language models exhibit the notable ability to learn a new language task after being prompted with just a few examples. Here, we present a simple, yet effective, approach for transferring…

Computer Vision and Pattern Recognition · Computer Science 2021-07-06 Maria Tsimpoukelli , Jacob Menick , Serkan Cabi , S. M. Ali Eslami , Oriol Vinyals , Felix Hill

We present MetaUVFS as the first Unsupervised Meta-learning algorithm for Video Few-Shot action recognition. MetaUVFS leverages over 550K unlabeled videos to train a two-stream 2D and 3D CNN architecture via contrastive learning to capture…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Jay Patravali , Gaurav Mittal , Ye Yu , Fuxin Li , Mei Chen

Weakly-supervised action localization aims to recognize and localize action instancese in untrimmed videos with only video-level labels. Most existing models rely on multiple instance learning(MIL), where the predictions of unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2023-09-27 Guiqin Wang , Peng Zhao , Cong Zhao , Shusen Yang , Jie Cheng , Luziwei Leng , Jianxing Liao , Qinghai Guo

Pre-trained vision-language models have inspired much research on few-shot learning. However, with only a few training images, there exist two crucial problems: (1) the visual feature distributions are easily distracted by class-irrelevant…

Computer Vision and Pattern Recognition · Computer Science 2023-05-22 Runqi Wang , Hao Zheng , Xiaoyue Duan , Jianzhuang Liu , Yuning Lu , Tian Wang , Songcen Xu , Baochang Zhang

Few-shot classification consists of learning a predictive model that is able to effectively adapt to a new class, given only a few annotated samples. To solve this challenging problem, meta-learning has become a popular paradigm that…

Computer Vision and Pattern Recognition · Computer Science 2019-09-02 Nikita Dvornik , Cordelia Schmid , Julien Mairal

In recent literature, few-shot classification has predominantly been defined by the N-way k-shot meta-learning problem. Models designed for this purpose are usually trained to excel on standard benchmarks following a restricted setup,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Constance Ferragu , Philomene Chagniot , Vincent Coyette

A fundamental challenge in machine learning today is to build a model that can learn from few examples. Here, we describe a reservoir based spiking neural model for learning to recognize actions with a limited number of labeled videos.…

Neural and Evolutionary Computing · Computer Science 2017-10-23 Priyadarshini Panda , Narayan Srinivasa

A primary challenge faced in few-shot action recognition is inadequate video data for training. To address this issue, current methods in this field mainly focus on devising algorithms at the feature level while little attention is paid to…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Huabin Liu , Weixian Lv , John See , Weiyao Lin

In recent years, few-shot action recognition has achieved remarkable performance through spatio-temporal relation modeling. Although a wide range of spatial and temporal alignment modules have been proposed, they primarily address spatial…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Hanyu Guo , Wanchuan Yu , Suzhou Que , Kaiwen Du , Yan Yan , Hanzi Wang

While few-shot learning as a transfer learning paradigm has gained significant traction for scenarios with limited data, it has primarily been explored in the context of building unimodal and unilingual models. Furthermore, a significant…

Machine Learning · Computer Science 2023-03-23 Aman Chadha , Vinija Jain

This paper addresses the task of unsupervised learning of representations for action recognition in videos. Previous works proposed to utilize future prediction, or other domain-specific objectives to train a network, but achieved only…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Pavel Tokmakov , Martial Hebert , Cordelia Schmid

Applying large-scale vision-language pre-trained models like CLIP to few-shot action recognition (FSAR) can significantly enhance both performance and efficiency. While several studies have recognized this advantage, most of them resort to…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Jiazheng Xing , Chao Xu , Mengmeng Wang , Guang Dai , Baigui Sun , Yong Liu , Jingdong Wang , Jian Zhao

Although vital to computer vision systems, few-shot action recognition is still not mature despite the wide research of few-shot image classification. Popular few-shot learning algorithms extract a transferable embedding from seen classes…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Su Lu , Han-Jia Ye , De-Chuan Zhan

Few-shot Test-Time Domain Adaptation focuses on adapting a model at test time to a specific domain using only a few unlabeled examples, addressing domain shift. Prior methods leverage CLIP's strong out-of-distribution (OOD) abilities by…

Machine Learning · Computer Science 2025-06-24 Zhixiang Chi , Li Gu , Huan Liu , Ziqiang Wang , Yanan Wu , Yang Wang , Konstantinos N Plataniotis

Current few-shot learning models capture visual object relations in the so-called meta-learning setting under a fixed-resolution input. However, such models have a limited generalization ability under the scale and location mismatch between…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Hongguang Zhang , Philip H. S. Torr , Piotr Koniusz

Existing works in few-shot action recognition mostly fine-tune a pre-trained image model and design sophisticated temporal alignment modules at feature level. However, simply fully fine-tuning the pre-trained model could cause overfitting…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Congqi Cao , Yueran Zhang , Yating Yu , Qinyi Lv , Lingtong Min , Yanning Zhang

Few-shot video segmentation is the task of delineating a specific novel class in a query video using few labelled support images. Typical approaches compare support and query features while limiting comparisons to a single feature layer and…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Mennatullah Siam , Rezaul Karim , He Zhao , Richard Wildes

Few-shot learning aims to correctly recognize query samples from unseen classes given a limited number of support samples, often by relying on global embeddings of images. In this paper, we propose to equip the backbone network with an…

Computer Vision and Pattern Recognition · Computer Science 2021-04-12 Jie Hong , Pengfei Fang , Weihao Li , Tong Zhang , Christian Simon , Mehrtash Harandi , Lars Petersson

Learning with limited data is a key challenge for visual recognition. Many few-shot learning methods address this challenge by learning an instance embedding function from seen classes and apply the function to instances from unseen classes…

Machine Learning · Computer Science 2021-06-15 Han-Jia Ye , Hexiang Hu , De-Chuan Zhan , Fei Sha