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Real-world visual recognition requires handling the extreme sample imbalance in large-scale long-tailed data. We propose a "divide&conquer" strategy for the challenging LVIS task: divide the whole data into balanced parts and then apply…

Computer Vision and Pattern Recognition · Computer Science 2020-04-06 Xinting Hu , Yi Jiang , Kaihua Tang , Jingyuan Chen , Chunyan Miao , Hanwang Zhang

Most existing state-of-the-art video classification methods assume that the training data obey a uniform distribution. However, video data in the real world typically exhibit an imbalanced long-tailed class distribution, resulting in a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-06 Yufan Hu , Junyu Gao , Changsheng Xu

Fine-grained action recognition is attracting increasing attention due to the emerging demand of specific action understanding in real-world applications, whereas the data of rare fine-grained categories is very limited. Therefore, we…

Computer Vision and Pattern Recognition · Computer Science 2021-08-17 Jiahao Wang , Yunhong Wang , Sheng Liu , Annan Li

Few-shot action recognition aims to recognize action classes with few training samples. Most existing methods adopt a meta-learning approach with episodic training. In each episode, the few samples in a meta-training task are split into…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Xiatian Zhu , Antoine Toisoul , Juan-Manuel Perez-Rua , Li Zhang , Brais Martinez , Tao Xiang

Deep learning based approaches have achieved significant progresses in different tasks like classification, detection, segmentation, and so on. Ensemble learning is widely known to further improve performance by combining multiple…

Computer Vision and Pattern Recognition · Computer Science 2019-05-17 Danlu Chen , Xu-Yao Zhang , Wei Zhang , Yao Lu , Xiuli Li , Tao Mei

Wearable cameras allow to acquire images and videos from the user's perspective. These data can be processed to understand humans behavior. Despite human behavior analysis has been thoroughly investigated in third person vision, it is still…

Computer Vision and Pattern Recognition · Computer Science 2023-07-06 Francesco Ragusa , Antonino Furnari , Giovanni Maria Farinella

Continuous dimensional emotion prediction is a challenging task where the fusion of various modalities usually achieves state-of-the-art performance such as early fusion or late fusion. In this paper, we propose a novel multi-modal fusion…

Computer Vision and Pattern Recognition · Computer Science 2017-09-08 Shizhe Chen , Qin Jin

In this paper, we consider the problem of multimodal data analysis with a use case of audiovisual emotion recognition. We propose an architecture capable of learning from raw data and describe three variants of it with distinct modality…

Computer Vision and Pattern Recognition · Computer Science 2022-01-27 Kateryna Chumachenko , Alexandros Iosifidis , Moncef Gabbouj

Long-tailed class distributions are prevalent among the practical applications of object detection and instance segmentation. Prior work in long-tail instance segmentation addresses the imbalance of losses between rare and frequent…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Ting-I Hsieh , Esther Robb , Hwann-Tzong Chen , Jia-Bin Huang

Convolutional neural networks have achieved great improvement on face recognition in recent years because of its extraordinary ability in learning discriminative features of people with different identities. To train such a well-designed…

Computer Vision and Pattern Recognition · Computer Science 2016-11-29 Xiao Zhang , Zhiyuan Fang , Yandong Wen , Zhifeng Li , Yu Qiao

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

Action recognition has become a rapidly developing research field within the last decade. But with the increasing demand for large scale data, the need of hand annotated data for the training becomes more and more impractical. One way to…

Computer Vision and Pattern Recognition · Computer Science 2019-06-05 Hilde Kuehne , Alexander Richard , Juergen Gall

Ensemble methods are known for enhancing the accuracy and robustness of machine learning models by combining multiple base learners. However, standard approaches like greedy or random ensembling often fall short, as they assume a constant…

Machine Learning · Computer Science 2025-06-24 Sebastian Pineda Arango , Maciej Janowski , Lennart Purucker , Arber Zela , Frank Hutter , Josif Grabocka

Multi-sensor frameworks provide opportunities for ensemble learning and sensor fusion to make use of redundancy and supplemental information, helpful in real-world safety applications such as continuous driver state monitoring which…

Machine Learning · Computer Science 2023-10-02 Ross Greer , Mohan Trivedi

In this work, we address the challenging task of long-tailed image recognition. Previous long-tailed recognition methods commonly focus on the data augmentation or re-balancing strategy of the tail classes to give more attention to tail…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Weide Liu , Zhonghua Wu , Yiming Wang , Henghui Ding , Fayao Liu , Jie Lin , Guosheng Lin

In this study, we introduce a multi-modal approach that efficiently integrates multi-scale clinical and dermoscopy features within a single network, thereby substantially reducing model parameters. The proposed method includes three novel…

Image and Video Processing · Electrical Eng. & Systems 2024-03-31 Peng Tang , Tobias Lasser

People can recognize scenes across many different modalities beyond natural images. In this paper, we investigate how to learn cross-modal scene representations that transfer across modalities. To study this problem, we introduce a new…

Computer Vision and Pattern Recognition · Computer Science 2016-07-26 Lluis Castrejon , Yusuf Aytar , Carl Vondrick , Hamed Pirsiavash , Antonio Torralba

Machine learning models are widely used to support stealth assessment in digital learning environments. Existing approaches typically rely on abstracted gameplay log data, which may overlook subtle behavioral cues linked to learners'…

Machine Learning · Computer Science 2025-07-31 Clemens Witt , Thiemo Leonhardt , Nadine Bergner , Mareen Grillenberger

We propose a new method for learning videos by aggregating multiple models by sequentially extracting video clips from untrimmed video. The proposed method reduces the correlation between clips by feeding clips to multiple models in turn…

Computer Vision and Pattern Recognition · Computer Science 2024-01-29 Kodai Kamiya , Toru Tamaki

Dynamic facial expression recognition (DFER) faces significant challenges due to long-tailed category distributions and complexity of spatio-temporal feature modeling. While existing deep learning-based methods have improved DFER…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Feng-Qi Cui , Zhen Lin , Xinlong Rao , Anyang Tong , Shiyao Li , Fei Wang , Changlin Chen , Bin Liu
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