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Retrieval-Augmented Generation (RAG) enhances Large Language Models (LLMs) by grounding generation in external knowledge, yielding relevance responses that are aligned with factual evidence and evolving corpora. Standard RAG pipelines…

Machine Learning · Computer Science 2026-04-07 Xun Sun , Baiheng Xie , Li Huang , Qiang Gao

This paper explores the task of Temporal Video Grounding (TVG) where, given an untrimmed video and a natural language sentence query, the goal is to recognize and determine temporal boundaries of action instances in the video described by…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Erica K. Shimomoto , Edison Marrese-Taylor , Hiroya Takamura , Ichiro Kobayashi , Hideki Nakayama , Yusuke Miyao

While Retrieval-Augmented Generation (RAG) plays a crucial role in the application of Large Language Models (LLMs), existing retrieval methods in knowledge-dense domains like law and medicine still suffer from a lack of multi-perspective…

Computation and Language · Computer Science 2025-10-24 Guanhua Chen , Wenhan Yu , Xiao Lu , Xiao Zhang , Erli Meng , Lei Sha

In this paper, we study the problem of temporal video grounding (TVG), which aims to predict the starting/ending time points of moments described by a text sentence within a long untrimmed video. Benefiting from fine-grained 3D visual…

Computer Vision and Pattern Recognition · Computer Science 2023-10-05 Yimeng Zhang , Xin Chen , Jinghan Jia , Sijia Liu , Ke Ding

3D visual grounding aims to automatically locate the 3D region of the specified object given the corresponding textual description. Existing works fail to distinguish similar objects especially when multiple referred objects are involved in…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Feng Xiao , Hongbin Xu , Qiuxia Wu , Wenxiong Kang

Partially Relevant Video Retrieval (PRVR) aims to retrieve untrimmed videos partially relevant to a given query. The core challenge lies in learning robust query-video alignment against spurious semantic correlations arising from inherent…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Long Zhang , Peipei Song , Jianfeng Dong , Kun Li , Xun Yang

Temporal Video Grounding (TVG) aims to localize a moment from an untrimmed video given the language description. Since the annotation of TVG is labor-intensive, TVG under limited supervision has accepted attention in recent years. The great…

Computer Vision and Pattern Recognition · Computer Science 2024-06-12 Xing Zhang , Jiaxi Gu , Haoyu Zhao , Shicong Wang , Hang Xu , Renjing Pei , Songcen Xu , Zuxuan Wu , Yu-Gang Jiang

This paper addresses the challenging task of weakly-supervised video temporal grounding. Existing approaches are generally based on the moment proposal selection framework that utilizes contrastive learning and reconstruction paradigm for…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Xiang Fang , Zeyu Xiong , Wanlong Fang , Xiaoye Qu , Chen Chen , Jianfeng Dong , Keke Tang , Pan Zhou , Yu Cheng , Daizong Liu

Retrieval-Augmented Generation (RAG) merges retrieval methods with deep learning advancements to address the static limitations of large language models (LLMs) by enabling the dynamic integration of up-to-date external information. This…

Information Retrieval · Computer Science 2026-05-19 Yizheng Huang , Jimmy Huang

Temporal Action Detection and Moment Retrieval constitute two pivotal tasks in video understanding, focusing on precisely localizing temporal segments corresponding to specific actions or events. Recent advancements introduced Moment…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Weijun Zhuang , Qizhang Li , Xin Li , Ming Liu , Xiaopeng Hong , Feng Gao , Fan Yang , Wangmeng Zuo

Video Corpus Moment Retrieval (VCMR) is a new video retrieval task aimed at retrieving a relevant moment from a large corpus of untrimmed videos using a text query. The relevance between the video and query is partial, mainly evident in two…

Computer Vision and Pattern Recognition · Computer Science 2024-04-24 Danyang Hou , Liang Pang , Huawei Shen , Xueqi Cheng

Temporal video grounding (TVG) aims to retrieve the time interval of a language query from an untrimmed video. A significant challenge in TVG is the low "Semantic Noise Ratio (SNR)", which results in worse performance with lower SNR. Prior…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Qi Zhang , Sipeng Zheng , Qin Jin

Foundational world models must be both interactive and preserve spatiotemporal coherence for effective future planning with action choices. However, present models for long video generation have limited inherent world modeling capabilities…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Taiye Chen , Xun Hu , Zihan Ding , Chi Jin

We propose a framework for parsing video and text jointly for understanding events and answering user queries. Our framework produces a parse graph that represents the compositional structures of spatial information (objects and scenes),…

Computer Vision and Pattern Recognition · Computer Science 2014-02-24 Kewei Tu , Meng Meng , Mun Wai Lee , Tae Eun Choe , Song-Chun Zhu

Recent progress in text-video retrieval has been largely driven by contrastive learning. However, existing methods often overlook the effect of the modality gap, which causes anchor representations to undergo in-place optimization (i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Jian Xiao , Zijie Song , Jialong Hu , Hao Cheng , Jia Li , Zhenzhen Hu , Richang Hong

Retrieval-Augmented Generation (RAG) enhances the factual grounding of Large Language Models by conditioning their outputs on external documents. However, standard embedding-based retrievers treat naturally structured corpora, such as…

Information Retrieval · Computer Science 2026-05-11 Giorgia Bolognesi , Claudio Estatico , Ulderico Fugacci , Isabella Mastroianni , Claudio Muselli , Luca Oneto

The goal of text-to-video retrieval is to search large databases for relevant videos based on text queries. Existing methods have progressed to handling explicit queries where the visual content of interest is described explicitly; however,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Yiqing Shen , Chenxiao Fan , Chenjia Li , Mathias Unberath

Retrieval-Augmented Generation (RAG) has emerged as an effective paradigm for expanding the knowledge capacity of Multimodal Large Language Models (MLLMs) by incorporating external knowledge sources into the generation process, and has been…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Xu Yuan , Liangbo Ning , Qingqing Ye , Wenqi Fan , Qing Li

Referring Video Object Segmentation (RVOS) aims to segment and track objects in videos based on natural language expressions, requiring precise alignment between visual content and textual queries. However, existing methods often suffer…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Seunghun Lee , Jiwan Seo , Jeonghoon Kim , Sungho Moon , Siwon Kim , Haeun Yun , Hyogyeong Jeon , Wonhyeok Choi , Jaehoon Jeong , Zane Durante , Sang Hyun Park , Sunghoon Im

The rapid growth of video content demands efficient and precise retrieval systems. While vision-language models (VLMs) excel in representation learning, they often struggle with adaptive, time-sensitive video retrieval. This paper…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yicheng Duan , Xi Huang , Duo Chen