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Metric-based meta-learning techniques have successfully been applied to few-shot classification problems. In this paper, we propose to leverage cross-modal information to enhance metric-based few-shot learning methods. Visual and semantic…

Machine Learning · Computer Science 2020-02-19 Chen Xing , Negar Rostamzadeh , Boris N. Oreshkin , Pedro O. Pinheiro

Micro-expression recognition (MER) presents a significant challenge due to the transient and subtle nature of the motion changes involved. In recent years, deep learning methods based on attention mechanisms have made some breakthroughs in…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Lijun Zhang , Yifan Zhang , Weicheng Tang , Xinzhi Sun , Xiaomeng Wang , Zhanshan Li

Classification of new class entities requires collecting and annotating hundreds or thousands of samples that is often prohibitively costly. Few-shot learning suggests learning to classify new classes using just a few examples. Only a small…

Computer Vision and Pattern Recognition · Computer Science 2021-07-20 Rami Ben-Ari , Mor Shpigel , Ophir Azulai , Udi Barzelay , Daniel Rotman

Few-Shot Action Recognition (FSAR) is a challenging task that requires recognizing novel action categories with a few labeled videos. Recent works typically apply semantically coarse category names as auxiliary contexts to guide the…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Hongyu Qu , Xiangbo Shu , Rui Yan , Hailiang Gao , Wenguan Wang , Jinhui Tang

Learning to generate a task-aware base learner proves a promising direction to deal with few-shot learning (FSL) problem. Existing methods mainly focus on generating an embedding model utilized with a fixed metric (eg, cosine distance) for…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Lei Zhang , Fei Zhou , Wei Wei , Yanning Zhang

We propose a Multi-level Second-order (MlSo) few-shot learning network for supervised or unsupervised few-shot image classification and few-shot action recognition. We leverage so-called power-normalized second-order base learner streams…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Hongguang Zhang , Hongdong Li , Piotr Koniusz

Few-Shot Action Recognition (FS-AR) has shown promising results but is often limited by a closed-set assumption that fails in real-world open-set scenarios. While Few-Shot Open-Set (FSOS) recognition is well-established for images, its…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Stefano Berti , Giulia Pasquale , Lorenzo Natale

In neuroscience research, achieving single-neuron matching across different imaging modalities is critical for understanding the relationship between neuronal structure and function. However, modality gaps and limited annotations present…

Computer Vision and Pattern Recognition · Computer Science 2025-04-24 Wenwei Li , Liyi Cai , Wu Chen , Anan Li

Recently, few-shot action recognition has significantly progressed by learning the feature discriminability and designing suitable comparison methods. Still, there are the following restrictions. (a) Previous works are mainly based on…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Fei Guo , Li Zhu , YiKang Wang , Han Qi

Few-shot learning (FSL) has attracted increasing attention in recent years but remains challenging, due to the intrinsic difficulty in learning to generalize from a few examples. This paper proposes an adaptive margin principle to improve…

Computer Vision and Pattern Recognition · Computer Science 2020-05-29 Aoxue Li , Weiran Huang , Xu Lan , Jiashi Feng , Zhenguo Li , Liwei Wang

Few-shot action recognition aims to enable models to quickly learn new action categories from limited labeled samples, addressing the challenge of data scarcity in real-world applications. Current research primarily addresses three core…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Xiaoyang Li , Mingming Lu , Ruiqi Wang , Hao Li , Zewei Le

Few-shot action recognition (FSAR) aims to classify human actions in videos with only a small number of labeled samples per category. The scarcity of training data has driven recent efforts to incorporate additional modalities, particularly…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Zefeng Qian , Xincheng Yao , Yifei Huang , Chongyang Zhang , Jiangyong Ying , Hong Sun

Adapting pre-trained representations has become the go-to recipe for learning new downstream tasks with limited examples. While literature has demonstrated great successes via representation learning, in this work, we show that substantial…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Xiao Lin , Meng Ye , Yunye Gong , Giedrius Buracas , Nikoletta Basiou , Ajay Divakaran , Yi Yao

Domain adaptation is essential for activity recognition to ensure accurate and robust performance across diverse environments, sensor types, and data sources. Unsupervised domain adaptation methods have been extensively studied, yet, they…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Kunyu Peng , Di Wen , David Schneider , Jiaming Zhang , Kailun Yang , M. Saquib Sarfraz , Rainer Stiefelhagen , Alina Roitberg

Few-shot object detection (FSOD) aims to classify and detect few images of novel categories. Existing meta-learning methods insufficiently exploit features between support and query images owing to structural limitations. We propose a…

Computer Vision and Pattern Recognition · Computer Science 2022-12-15 Dongwoo Park , Jong-Min Lee

Going beyond few-shot action recognition (FSAR), cross-domain FSAR (CDFSAR) has attracted recent research interests by solving the domain gap lying in source-to-target transfer learning. Existing CDFSAR methods mainly focus on joint…

Computer Vision and Pattern Recognition · Computer Science 2025-04-04 Yilong Wang , Zilin Gao , Qilong Wang , Zhaofeng Chen , Peihua Li , Qinghua Hu

In recent times, learning-based methods for video deraining have demonstrated commendable results. However, there are two critical challenges that these methods are yet to address: exploiting temporal correlations among adjacent frames and…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Xinwei Xue , Jia He , Long Ma , Xiangyu Meng , Wenlin Li , Risheng Liu

Few-shot learning aims to learn representations that can tackle novel tasks given a small number of examples. Recent studies show that cross-modal learning can improve representations for few-shot classification. More specifically, language…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 Jordi Armengol-Estapé , Vincent Michalski , Ramnath Kumar , Pierre-Luc St-Charles , Doina Precup , Samira Ebrahimi Kahou

Few-shot image classification has become a popular research topic for its wide application in real-world scenarios, however the problem of supervision collapse induced by single image-level annotation remains a major challenge. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Kexin Di , Xiuxing Li , Yuyang Han , Ziyu Li , Qing Li , Xia Wu

In few-shot recognition, a classifier that has been trained on one set of classes is required to rapidly adapt and generalize to a disjoint, novel set of classes. To that end, recent studies have shown the efficacy of fine-tuning with…

Computer Vision and Pattern Recognition · Computer Science 2023-06-16 Panagiotis Eustratiadis , Łukasz Dudziak , Da Li , Timothy Hospedales