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Multimodal document retrieval aims to identify and retrieve various forms of multimodal content, such as figures, tables, charts, and layout information from extensive documents. Despite its increasing popularity, there is a notable lack of…

Information Retrieval · Computer Science 2025-11-10 Kuicai Dong , Yujing Chang , Xin Deik Goh , Dexun Li , Ruiming Tang , Yong Liu

Multimodal Large Language Models (MLLMs) perform well in video understanding but degrade on long videos due to fixed-length context and weak long-term dependency modeling. Retrieval-Augmented Generation (RAG) can expand knowledge…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Zhucun Xue , Jiangning Zhang , Xurong Xie , Yuxuan Cai , Yong Liu , Xiangtai Li , Dacheng Tao

Given an untrimmed video and a sentence query, video moment retrieval using language (VMR) aims to locate a target query-relevant moment. Since the untrimmed video is overlong, almost all existing VMR methods first sparsely down-sample each…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Xiang Fang , Daizong Liu , Wanlong Fang , Pan Zhou , Zichuan Xu , Wenzheng Xu , Junyang Chen , Renfu Li

Multimodal reward models (MRMs) play a crucial role in the training, inference, and evaluation of Large Vision Language Models (LVLMs) by assessing response quality. However, existing benchmarks for evaluating MRMs in the video domain…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Zhihong Zhang , Xiaojian Huang , Jin Xu , Zhuodong Luo , Xinzhi Wang , Jiansheng Wei , Xuejin Chen

The evaluation of Long Video Understanding (LVU) performance poses an important but challenging research problem. Despite previous efforts, the existing video understanding benchmarks are severely constrained by several issues, especially…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Junjie Zhou , Yan Shu , Bo Zhao , Boya Wu , Zhengyang Liang , Shitao Xiao , Minghao Qin , Xi Yang , Yongping Xiong , Bo Zhang , Tiejun Huang , Zheng Liu

Most organizational data in this world are stored as documents, and visual retrieval plays a crucial role in unlocking the collective intelligence from all these documents. However, existing benchmarks focus on English-only document…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Jian Chen , Ming Li , Jihyung Kil , Chenguang Wang , Tong Yu , Ryan Rossi , Tianyi Zhou , Changyou Chen , Ruiyi Zhang

The burgeoning volume of multi-modal data necessitates advanced retrieval paradigms beyond unimodal and cross-modal approaches. Composed Multi-modal Retrieval (CMR) emerges as a pivotal next-generation technology, enabling users to query…

Information Retrieval · Computer Science 2025-07-22 Kun Zhang , Jingyu Li , Zhe Li , Jingjing Zhang , Fan Li , Yandong Liu , Rui Yan , Zihang Jiang , Nan Chen , Lei Zhang , Yongdong Zhang , Zhendong Mao , S. Kevin Zhou

Accurately locating key moments within long videos is crucial for solving long video understanding (LVU) tasks. However, existing benchmarks are either severely limited in terms of video length and task diversity, or they focus solely on…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Huaying Yuan , Jian Ni , Zheng Liu , Yueze Wang , Junjie Zhou , Zhengyang Liang , Bo Zhao , Zhao Cao , Zhicheng Dou , Ji-Rong Wen

Video Moment Retrieval (VMR) aims to localize a specific temporal segment within an untrimmed long video given a natural language query. Existing methods often suffer from inadequate training annotations, i.e., the sentence typically…

Computer Vision and Pattern Recognition · Computer Science 2024-06-27 Weitong Cai , Jiabo Huang , Shaogang Gong , Hailin Jin , Yang Liu

Universal Multimodal Retrieval (UMR) aims to map different modalities (e.g., visual and textual) into a shared embedding space for multi-modal retrieval. Existing UMR methods can be broadly divided into two categories: early-fusion…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Juan Li , Chuanghao Ding , Xujie Zhang , Cam-Tu Nguyen

With the explosive growth of web videos and emerging large-scale vision-language pre-training models, e.g., CLIP, retrieving videos of interest with text instructions has attracted increasing attention. A common practice is to transfer…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Bo Fang , Wenhao Wu , Chang Liu , Yu Zhou , Yuxin Song , Weiping Wang , Xiangbo Shu , Xiangyang Ji , Jingdong Wang

Long-form video understanding, characterized by long-range temporal dependencies and multiple events, remains a challenge. Existing methods often rely on static reasoning or external visual-language models (VLMs), which face issues like…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Yuan Xie , Tianshui Chen , Zheng Ge , Lionel Ni

We introduce MAVERIX (Multimodal audiovisual Evaluation and Recognition IndeX), a unified benchmark to probe the video understanding in multimodal LLMs, encompassing video, audio, text inputs with human performance baselines. Although…

Cross-Video Reasoning (CVR) presents a significant challenge in video understanding, which requires simultaneous understanding of multiple videos to aggregate and compare information across groups of videos. Most existing video…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Jingyao Li , Jingyun Wang , Molin Tan , Haochen Wang , Cilin Yan , Likun Shi , Jiayin Cai , Xiaolong Jiang , Yao Hu

As video becomes increasingly central to information dissemination and multimodal large language models (MLLMs) continue to advance, evaluating video retrieval has become increasingly important. In realistic search scenarios, this requires…

Multimedia · Computer Science 2026-05-12 Qijie You , Hao Liang , Mingrui Chen , Bohan Zeng , Meiyi Qiang , Zhenhao Wong , Wentao Zhang

Multimodal document retrieval systems have shown strong progress in aligning visual and textual content for semantic search. However, most existing approaches remain heavily English-centric, limiting their effectiveness in multilingual…

Information Retrieval · Computer Science 2025-12-04 Adithya S Kolavi , Vyoman Jain

The rapid advancement of unsupervised representation learning and large-scale pre-trained vision-language models has significantly improved cross-modal retrieval tasks. However, existing multi-modal information retrieval (MMIR) studies lack…

Information Retrieval · Computer Science 2025-10-20 Zirui Li , Siwei Wu , Yizhi Li , Xingyu Wang , Yi Zhou , Chenghua Lin

Existing web-generation benchmarks rely on text prompts or static screenshots as input. However, videos naturally convey richer signals such as interaction flow, transition timing, and motion continuity, which are essential for faithful…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Yuhong Dai , Yanlin Lai , Mitt Huang , Hangyu Guo , Dingming Li , Hongbo Peng , Haodong Li , Yingxiu Zhao , Haoran Lyu , Zheng Ge , Xiangyu Zhang , Daxin Jiang

We introduce mTVR, a large-scale multilingual video moment retrieval dataset, containing 218K English and Chinese queries from 21.8K TV show video clips. The dataset is collected by extending the popular TVR dataset (in English) with paired…

Computation and Language · Computer Science 2021-08-03 Jie Lei , Tamara L. Berg , Mohit Bansal

As important data carriers, the drastically increasing number of multimedia videos often brings many duplicate and near-duplicate videos in the top results of search. Near-duplicate video retrieval (NDVR) can cluster and filter out the…

Information Retrieval · Computer Science 2021-06-01 Hao Cheng , Ping Wang , Chun Qi