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Labeling videos at scale is impractical. Consequently, self-supervised visual representation learning is key for efficient video analysis. Recent success in learning image representations suggests contrastive learning is a promising…

Computer Vision and Pattern Recognition · Computer Science 2021-05-03 Nishant Rai , Ehsan Adeli , Kuan-Hui Lee , Adrien Gaidon , Juan Carlos Niebles

Self-supervised learning has emerged as a powerful paradigm for label-free model pretraining, particularly in the video domain, where manual annotation is costly and time-intensive. However, existing self-supervised approaches employ…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Akash Kumar , Ashlesha Kumar , Vibhav Vineet , Yogesh S Rawat

Representation learning stands as one of the critical machine learning techniques across various domains. Through the acquisition of high-quality features, pre-trained embeddings significantly reduce input space redundancy, benefiting…

Machine Learning · Computer Science 2023-12-19 Suiyao Chen , Jing Wu , Naira Hovakimyan , Handong Yao

Recently, much progress has been made for self-supervised action recognition. Most existing approaches emphasize the contrastive relations among videos, including appearance and motion consistency. However, two main issues remain for…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Guanhong Wang , Keyu Lu , Yang Zhou , Zhanhao He , Gaoang Wang

The recent success in deep learning has lead to various effective representation learning methods for videos. However, the current approaches for video representation require large amount of human labeled datasets for effective learning. We…

Computer Vision and Pattern Recognition · Computer Science 2018-11-30 Shruti Vyas , Yogesh S Rawat , Mubarak Shah

This paper presents TCE: Temporally Coherent Embeddings for self-supervised video representation learning. The proposed method exploits inherent structure of unlabeled video data to explicitly enforce temporal coherency in the embedding…

Computer Vision and Pattern Recognition · Computer Science 2020-11-18 Joshua Knights , Ben Harwood , Daniel Ward , Anthony Vanderkop , Olivia Mackenzie-Ross , Peyman Moghadam

Large language model (LLM) based listwise reranking has emerged as the dominant paradigm for achieving state-of-the-art ranking effectiveness in information retrieval. However, its reliance on feeding full passage texts into the LLM…

Information Retrieval · Computer Science 2026-04-27 Xiaojie Ke , Shuai Zhang , Liansheng Sun , Yongjin Wang , Hengjun Jiang , Xiangkun Liu , Cunxin Gu , Jian Xu , Guanjun Jiang

Despite the growing discriminative capabilities of modern deep learning methods for recognition tasks, the inner workings of the state-of-art models still remain mostly black-boxes. In this paper, we propose a systematic interpretation of…

Computer Vision and Pattern Recognition · Computer Science 2017-11-27 Jingxuan Hou , Tae Soo Kim , Austin Reiter

We propose a self-supervised visual learning method by predicting the variable playback speeds of a video. Without semantic labels, we learn the spatio-temporal visual representation of the video by leveraging the variations in the visual…

Computer Vision and Pattern Recognition · Computer Science 2021-06-02 Hyeon Cho , Taehoon Kim , Hyung Jin Chang , Wonjun Hwang

Effectively handling temporal redundancy remains a key challenge in learning video models. Prevailing approaches often treat each set of frames independently, failing to effectively capture the temporal dependencies and redundancies…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Xiang Fan , Xiaohang Sun , Kushan Thakkar , Zhu Liu , Vimal Bhat , Ranjay Krishna , Xiang Hao

In self-supervised spatio-temporal representation learning, the temporal resolution and long-short term characteristics are not yet fully explored, which limits representation capabilities of learned models. In this paper, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2020-06-23 Yuan Yao , Chang Liu , Dezhao Luo , Yu Zhou , Qixiang Ye

Robust video scene classification models should capture the spatial (pixel-wise) and temporal (frame-wise) characteristics of a video effectively. Transformer models with self-attention which are designed to get contextualized…

Computer Vision and Pattern Recognition · Computer Science 2021-10-28 Saurabh Sahu , Palash Goyal

We introduce V-Trans4Style, an innovative algorithm tailored for dynamic video content editing needs. It is designed to adapt videos to different production styles like documentaries, dramas, feature films, or a specific YouTube channel's…

Computer Vision and Pattern Recognition · Computer Science 2025-01-15 Pooja Guhan , Tsung-Wei Huang , Guan-Ming Su , Subhadra Gopalakrishnan , Dinesh Manocha

This paper is a brief report to our submission to the VIPriors Action Recognition Challenge. Action recognition has attracted many researchers attention for its full application, but it is still challenging. In this paper, we study previous…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Zhipeng Luo , Dawei Xu , Zhiguang Zhang

Reranking is a critical component in many information retrieval pipelines. Despite remarkable progress in text-only settings, multimodal reranking remains challenging, particularly when the candidate set contains hybrid text and image…

Information Retrieval · Computer Science 2026-05-26 Yupei Yang , Lin Yang , Wanxi Deng , Lin Qu , Shikui Tu , Lei Xu

Recently, content-aware methods have been employed to reduce bandwidth and enhance the quality of Internet video delivery. These methods involve training distinct content-aware super-resolution (SR) models for each video chunk on the…

Networking and Internet Architecture · Computer Science 2025-09-18 Rongyu Zhang , Xize Duan , Jiaming Liu , Li Du , Yuan Du , Dan Wang , Shanghang Zhang , Fangxin Wang

Long-form video understanding presents significant challenges for interactive retrieval systems, as conventional methods struggle to process extensive video content efficiently. Existing approaches often rely on single models, inefficient…

Computer Vision and Pattern Recognition · Computer Science 2025-04-14 Huu-Loc Tran , Tinh-Anh Nguyen-Nhu , Huu-Phong Phan-Nguyen , Tien-Huy Nguyen , Nhat-Minh Nguyen-Dich , Anh Dao , Huy-Duc Do , Quan Nguyen , Hoang M. Le , Quang-Vinh Dinh

In recent years, representation learning has become the research focus of the machine learning community. Large-scale neural networks are a crucial step toward achieving general intelligence, with their success largely attributed to their…

Machine Learning · Computer Science 2025-04-22 Lifeng Gu

Recently, action proposal methods have played an important role in action recognition tasks, as they reduce the search space dramatically. Most unsupervised action proposal methods tend to generate hundreds of action proposals which include…

Computer Vision and Pattern Recognition · Computer Science 2017-04-05 Waqas Sultani , Dong Zhang , Mubarak Shah

Transformers have gained increasing popularity in a wide range of applications, including Natural Language Processing (NLP), Computer Vision and Speech Recognition, because of their powerful representational capacity. However, harnessing…