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Long video understanding remains challenging for Multi-modal Large Language Models (MLLMs) due to high memory costs and context-length limits. Prior approaches mitigate this by scoring and selecting frames/tokens within short clips, but…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Haozhe Qi , Kevin Qu , Mahdi Rad , Rui Wang , Alexander Mathis , Marc Pollefeys

Large language models (LLMs) encounter computational challenges during long-sequence inference, especially in the attention pre-filling phase, where the complexity grows quadratically with the prompt length. Previous efforts to mitigate…

Machine Learning · Computer Science 2025-03-03 Xunhao Lai , Jianqiao Lu , Yao Luo , Yiyuan Ma , Xun Zhou

In dictionary selection, several atoms are selected from finite candidates that successfully approximate given data points in the sparse representation. We propose a novel efficient greedy algorithm for dictionary selection. Not only does…

Machine Learning · Computer Science 2018-09-10 Kaito Fujii , Tasuku Soma

Existing large video-language models (LVLMs) struggle to comprehend long videos correctly due to limited context. To address this problem, fine-tuning long-context LVLMs and employing GPT-based agents have emerged as promising solutions.…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Yongdong Luo , Xiawu Zheng , Guilin Li , Shukang Yin , Haojia Lin , Chaoyou Fu , Jinfa Huang , Jiayi Ji , Fei Chao , Jiebo Luo , Rongrong Ji

Large Language Models (LLMs) have in recent years demonstrated impressive prowess in natural language generation. A common practice to improve generation diversity is to sample multiple outputs from the model. However, there lacks a simple…

Computation and Language · Computer Science 2022-09-23 Xingdi Yuan , Tong Wang , Yen-Hsiang Wang , Emery Fine , Rania Abdelghani , Pauline Lucas , Hélène Sauzéon , Pierre-Yves Oudeyer

Slang interpretation has been a challenging downstream task for Large Language Models (LLMs) as the expressions are inherently embedded in contextual, cultural, and linguistic frameworks. In the absence of domain-specific training data, it…

Computation and Language · Computer Science 2026-03-17 Jinghan Cao , Qingyang Ren , Xiangyun Chen , Xinjin Li , Haoxiang Gao , Yu Zhao

Reinforcement learning based post-training paradigms for Video Large Language Models (VideoLLMs) have achieved significant success by optimizing for visual-semantic tasks such as captioning or VideoQA. However, while these approaches…

Computer Vision and Pattern Recognition · Computer Science 2026-01-08 Xiaokun Sun , Zezhong Wu , Zewen Ding , Linli Xu

Social relation reasoning aims to identify relation categories such as friends, spouses, and colleagues from images. While current methods adopt the paradigm of training a dedicated network end-to-end using labeled image data, they are…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Wanhua Li , Zibin Meng , Jiawei Zhou , Donglai Wei , Chuang Gan , Hanspeter Pfister

Large multimodal models (LMMs) have recently demonstrated remarkable performance in video question answering (VideoQA), yet reasoning over video remains challenging due to high inference cost and diluted information. Keyframe selection…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Minchan Kwon , Hyounguk Shon , Junmo Kim

Frame selection is crucial due to high frame redundancy and limited context windows when applying Large Vision-Language Models (LVLMs) to long videos. Current methods typically select frames with high relevance to a given query, resulting…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Wang Chen , Yuhui Zeng , Yongdong Luo , Tianyu Xie , Luojun Lin , Jiayi Ji , Yan Zhang , Xiawu Zheng

Video Large Language Models (Video-LLMs) have made remarkable progress in video understanding tasks. However, they are constrained by the maximum length of input tokens, making it impractical to input entire videos. Existing frame selection…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Sicheng Yu , Chengkai Jin , Huanyu Wang , Zhenghao Chen , Sheng Jin , Zhongrong Zuo , Xiaolei Xu , Zhenbang Sun , Bingni Zhang , Jiawei Wu , Hao Zhang , Qianru Sun

Understanding hour-long videos with multi-modal large language models (MM-LLMs) enriches the landscape of human-centered AI applications. However, for end-to-end video understanding with LLMs, uniformly sampling video frames results in LLMs…

Computer Vision and Pattern Recognition · Computer Science 2025-10-08 Xinye Cao , Hongcan Guo , Jiawen Qian , Guoshun Nan , Chao Wang , Yuqi Pan , Tianhao Hou , Xiaojuan Wang , Yutong Gao

The ability to understand long videos is vital for embodied intelligent agents, because their effectiveness depends on how well they can accumulate, organize, and leverage long-horizon perceptual memories. Recently, multimodal LLMs have…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Tatiana Zemskova , Solomon Andryushenko , Ilya Obrubov , Viktoriia Khoruzhaia , Ekaterina Eroshenko , Ekaterina Derevyanka , Dmitry Yudin

Vision-language models (VLMs) could power real-time assistants and autonomous agents, but they face a critical challenge: understanding near-infinite video streams without escalating latency and memory usage. Processing entire videos with…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Ruyi Xu , Guangxuan Xiao , Yukang Chen , Liuning He , Kelly Peng , Yao Lu , Song Han

Video action localization aims to find the timings of specific actions from a long video. Although existing learning-based approaches have been successful, they require annotating videos, which comes with a considerable labor cost. This…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Naoki Wake , Atsushi Kanehira , Kazuhiro Sasabuchi , Jun Takamatsu , Katsushi Ikeuchi

The remarkable natural language understanding, reasoning, and generation capabilities of large language models (LLMs) have made them attractive for application to video understanding, utilizing video tokens as contextual input. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-09-25 Jiaqi Xu , Cuiling Lan , Wenxuan Xie , Xuejin Chen , Yan Lu

In this work, we propose an efficient Video-Language Alignment (ViLA) network. Our ViLA model addresses both efficient frame sampling and effective cross-modal alignment in a unified way. In our ViLA network, we design a new learnable…

Computer Vision and Pattern Recognition · Computer Science 2024-10-02 Xijun Wang , Junbang Liang , Chun-Kai Wang , Kenan Deng , Yu Lou , Ming Lin , Shan Yang

Despite recent advances in Video Large Language Models (VideoLLMs), effectively understanding long-form videos remains a significant challenge. Perceiving lengthy videos containing thousands of frames poses substantial computational burden.…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Linli Yao , Haoning Wu , Kun Ouyang , Yuanxing Zhang , Caiming Xiong , Bei Chen , Xu Sun , Junnan Li

The Large Vision-Language Model (LVLM) integrates computer vision and natural language processing techniques, offering substantial application potential. However, these models demand extensive resources during inference. Adaptive attention…

Artificial Intelligence · Computer Science 2025-02-10 Junyang Zhang , Mu Yuan , Ruiguang Zhong , Puhan Luo , Huiyou Zhan , Ningkang Zhang , Chengchen Hu , Xiangyang Li

Video Large Language Models (Video LLMs) have achieved significant success by adopting the paradigm of large-scale pre-training followed by supervised fine-tuning (SFT). However, existing approaches struggle with temporal reasoning due to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Shicheng Li , Lei Li , Kun Ouyang , Shuhuai Ren , Yuanxin Liu , Yuanxing Zhang , Fuzheng Zhang , Lingpeng Kong , Qi Liu , Xu Sun