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Video corpus moment retrieval~(VCMR) is the task of retrieving a relevant video moment from a large corpus of untrimmed videos via a natural language query. State-of-the-art work for VCMR is based on two-stage method. In this paper, we…

计算机视觉与模式识别 · 计算机科学 2023-02-01 Danyang Hou , Liang Pang , Yanyan Lan , Huawei Shen , Xueqi Cheng

Detecting test-time distribution shift has emerged as a key capability for safely deployed machine learning models, with the question being tackled under various guises in recent years. In this paper, we aim to provide a consolidated view…

计算机视觉与模式识别 · 计算机科学 2024-09-02 Hongjun Wang , Sagar Vaze , Kai Han

The target of video moment retrieval (VMR) is predicting temporal spans within a video that semantically match a given linguistic query. Existing VMR methods based on multimodal large language models (MLLMs) overly rely on expensive…

多媒体 · 计算机科学 2025-01-15 Yifang Xu , Yunzhuo Sun , Benxiang Zhai , Ming Li , Wenxin Liang , Yang Li , Sidan Du

Retrieval-augmented models have proven to be effective in natural language processing tasks, yet there remains a lack of research on their optimization using variational inference. We introduce the Variational Open-Domain (VOD) framework…

计算与语言 · 计算机科学 2023-06-01 Valentin Liévin , Andreas Geert Motzfeldt , Ida Riis Jensen , Ole Winther

Video moment retrieval (VMR) identifies a specific moment in an untrimmed video for a given natural language query. This task is prone to suffer the weak alignment problem innate in video datasets. Due to the ambiguity, a query does not…

计算机视觉与模式识别 · 计算机科学 2024-10-02 Minjoon Jung , Youwon Jang , Seongho Choi , Joochan Kim , Jin-Hwa Kim , Byoung-Tak Zhang

The reliability of artificial intelligence (AI) systems in open-world settings depends heavily on their ability to flag out-of-distribution (OOD) inputs unseen during training. Recent advances in large-scale vision-language models (VLMs)…

机器学习 · 计算机科学 2025-10-14 Faizul Rakib Sayem , Shahana Ibrahim

For the majority of the machine learning community, the expensive nature of collecting high-quality human-annotated data and the inability to efficiently finetune very large state-of-the-art pretrained models on limited compute are major…

计算机视觉与模式识别 · 计算机科学 2022-11-07 Anuj Diwan , Puyuan Peng , Raymond J. Mooney

Video anomaly detection (VAD) with weak supervision has achieved remarkable performance in utilizing video-level labels to discriminate whether a video frame is normal or abnormal. However, current approaches are inherently limited to a…

计算机视觉与模式识别 · 计算机科学 2024-03-14 Peng Wu , Xuerong Zhou , Guansong Pang , Yujia Sun , Jing Liu , Peng Wang , Yanning Zhang

With the explosion of multimedia content, video moment retrieval (VMR), which aims to detect a video moment that matches a given text query from a video, has been studied intensively as a critical problem. However, the existing VMR…

计算机视觉与模式识别 · 计算机科学 2024-08-12 Nakyeong Yang , Minsung Kim , Seunghyun Yoon , Joongbo Shin , Kyomin Jung

Video moment retrieval and highlight detection have received attention in the current era of video content proliferation, aiming to localize moments and estimate clip relevances based on user-specific queries. Given that the video content…

计算机视觉与模式识别 · 计算机科学 2024-03-05 Henghao Zhao , Kevin Qinghong Lin , Rui Yan , Zechao Li

Video Moment Retrieval (VMR) aims to retrieve a specific moment semantically related to the given query. To tackle this task, most existing VMR methods solely focus on the visual and textual modalities while neglecting the complementary but…

信息检索 · 计算机科学 2025-10-28 Junan Lin , Daizong Liu , Xianke Chen , Xiaoye Qu , Xun Yang , Jixiang Zhu , Sanyuan Zhang , Jianfeng Dong

Aiming at identifying unexpected inputs from unknown classes, out-of-distribution (OOD) detection has emerged as a pivotal approach to enhancing the reliability of machine learning models. This paper focuses on the burgeoning paradigm of…

机器学习 · 计算机科学 2026-05-25 Bo Peng , Jie Lu , Guangquan Zhang , Zhen Fang

Video moment search, the process of finding relevant moments in a video corpus to match a user's query, is crucial for various applications. Existing solutions, however, often assume a single perfect matching moment, struggle with…

信息检索 · 计算机科学 2025-01-10 Chongzhi Zhang , Xizhou Zhu , Aixin Sun

Partially relevant video retrieval (PRVR) is a practical yet challenging task in text-to-video retrieval, where videos are untrimmed and contain much background content. The pursuit here is of both effective and efficient solutions to…

计算机视觉与模式识别 · 计算机科学 2025-04-16 Peipei Song , Long Zhang , Long Lan , Weidong Chen , Dan Guo , Xun Yang , Meng Wang

Video Instance Segmentation (VIS) aims at segmenting and categorizing objects in videos from a closed set of training categories, lacking the generalization ability to handle novel categories in real-world videos. To address this…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Haochen Wang , Cilin Yan , Shuai Wang , Xiaolong Jiang , XU Tang , Yao Hu , Weidi Xie , Efstratios Gavves

Recent vision-language pre-trained models (VL-PTMs) have shown remarkable success in open-vocabulary tasks. However, downstream use cases often involve further fine-tuning of VL-PTMs, which may distort their general knowledge and impair…

计算机视觉与模式识别 · 计算机科学 2026-05-27 Lin Zhu , Yifeng Yang , Qinying Gu , Xinbing Wang , Chenghu Zhou , Nanyang Ye

Traditional semi-supervised object detection methods assume a fixed set of object classes (in-distribution or ID classes) during training and deployment, which limits performance in real-world scenarios where unseen classes…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Garvita Allabadi , Ana Lucic , Siddarth Aananth , Tiffany Yang , Yu-Xiong Wang , Vikram Adve

Video-to-video moment retrieval (Vid2VidMR) is the task of localizing unseen events or moments in a target video using a query video. This task poses several challenges, such as the need for semantic frame-level alignment and modeling…

计算机视觉与模式识别 · 计算机科学 2025-09-03 Yogesh Kumar , Uday Agarwal , Manish Gupta , Anand Mishra

The query-based moment retrieval is a problem of localising a specific clip from an untrimmed video according a query sentence. This is a challenging task that requires interpretation of both the natural language query and the video…

计算机视觉与模式识别 · 计算机科学 2020-10-08 Mayu Otani , Yuta Nakashima , Esa Rahtu , Janne Heikkilä

This study focuses on weakly-supervised Video Moment Retrieval (VMR), aiming to identify a moment semantically similar to the given query within an untrimmed video using only video-level correspondences, without relying on temporal…

计算机视觉与模式识别 · 计算机科学 2026-05-15 Bolin Zhang , Chao Yang , Bin Jiang , Takahiro Komamizu , Ichiro Ide