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Weakly-supervised video scene graph generation (WS-VSGG) aims to parse video content into structured relational triplets without bounding box annotations and with only sparse temporal labeling, significantly reducing annotation costs.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Minseok Kang , Minhyeok Lee , Minjung Kim , Jungho Lee , Donghyeong Kim , Sungmin Woo , Inseok Jeon , Sangyoun Lee

While Retrieval-Augmented Generation (RAG) systems enhance Large Language Models (LLMs) by incorporating external knowledge, they still face persistent challenges in retrieval inefficiency and the inability of LLMs to filter out irrelevant…

Computation and Language · Computer Science 2025-02-13 Ruobing Yao , Yifei Zhang , Shuang Song , Yuhua Liu , Neng Gao , Chenyang Tu

Retrieval-Augmented Generation (RAG) has emerged as a powerful paradigm for enhancing the capabilities of large language models. However, existing RAG evaluation predominantly focuses on text retrieval and relies on opaque, end-to-end…

Information Retrieval · Computer Science 2025-05-19 Chuan Xu , Qiaosheng Chen , Yutong Feng , Gong Cheng

Multi-modal Retrieval-Augmented Generation (MMRAG) enables highly credible generation by integrating external multi-modal knowledge, thus demonstrating impressive performance in complex multi-modal scenarios. However, existing MMRAG methods…

Artificial Intelligence · Computer Science 2025-12-22 Shengwei Zhao , Jingwen Yao , Sitong Wei , Linhai Xu , Yuying Liu , Dong Zhang , Zhiqiang Tian , Shaoyi Du

Remote sensing visual grounding (RSVG) aims to localize objects in remote sensing imagery according to natural language expressions. Previous methods typically rely on sentence-level vision-language alignment, which struggles to exploit…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Ke Li , Ting Wang , Di Wang , Yongshan Zhu , Yiming Zhang , Tao Lei , Quan Wang

Recent advances in video world modeling have enabled large-scale generative models to simulate embodied environments with high visual fidelity, providing strong priors for prediction, planning, and control. Yet, despite their realism, these…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Haoyang He , Jay Patrikar , Dong-Ki Kim , Max Smith , Daniel McGann , Ali-akbar Agha-mohammadi , Shayegan Omidshafiei , Sebastian Scherer

Referring video segmentation aims to segment the corresponding video object described by the language expression. To address this task, we first design a two-stream encoder to extract CNN-based visual features and transformer-based…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Guang Feng , Lihe Zhang , Zhiwei Hu , Huchuan Lu

Video moment retrieval (MR) and highlight detection (HD) based on natural language queries are two highly related tasks, which aim to obtain relevant moments within videos and highlight scores of each video clip. Recently, several methods…

Computer Vision and Pattern Recognition · Computer Science 2024-01-08 Hao Sun , Mingyao Zhou , Wenjing Chen , Wei Xie

Retrieval-augmented generation (RAG) is a common way to ground language models in external documents and up-to-date information. Classical retrieval systems relied on lexical methods such as BM25, which rank documents by term overlap with…

Computation and Language · Computer Science 2026-03-05 Martin Asenov , Kenza Benkirane , Dan Goldwater , Aneiss Ghodsi

Robots collaborating with humans must convert natural language goals into actionable, physically grounded decisions. For example, executing a command such as "go two meters to the right of the fridge" requires grounding semantic references,…

Robotics · Computer Science 2026-03-20 Swagat Padhan , Lakshya Jain , Bhavya Minesh Shah , Omkar Patil , Thao Nguyen , Nakul Gopalan

Large language models (LLMs) commonly struggle with specialized or emerging topics which are rarely seen in the training corpus. Graph-based retrieval-augmented generation (GraphRAG) addresses this by structuring domain knowledge as a graph…

Information Retrieval · Computer Science 2025-06-05 Zhefan Wang , Huanjun Kong , Jie Ying , Wanli Ouyang , Nanqing Dong

Medical Visual Grounding (MVG) aims to identify diagnostically relevant phrases from free-text radiology reports and localize their corresponding regions in medical images, providing interpretable visual evidence to support clinical…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Yifan Gao , Tao Zhou , Yi Zhou , Ke Zou , Yizhe Zhang , Huazhu Fu

Current methods for Video Moment Retrieval (VMR) struggle to align complex situations involving specific environmental details, character descriptions, and action narratives. To tackle this issue, we propose a Large Language Model-guided…

Computer Vision and Pattern Recognition · Computer Science 2024-05-22 Weijia Liu , Bo Miao , Jiuxin Cao , Xuelin Zhu , Bo Liu , Mehwish Nasim , Ajmal Mian

Reward models are critical for reinforcement learning from human feedback, as they determine the alignment quality and reliability of generative models. For complex tasks such as image editing, reward models are required to capture global…

Despite recent advances in Video Large Language Models (Vid-LLMs), Temporal Video Grounding (TVG), which aims to precisely localize time segments corresponding to query events, remains a significant challenge. Existing methods often match…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Jiahao Nie , Wenbin An , Gongjie Zhang , Yicheng Xu , Yap-Peng Tan , Alex C. Kot , Shijian Lu

In this paper we undertake the task of text-based video moment retrieval from a corpus of videos. To train the model, text-moment paired datasets were used to learn the correct correspondences. In typical training methods, ground-truth…

Computer Vision and Pattern Recognition · Computer Science 2021-06-28 Sho Maeoki , Yusuke Mukuta , Tatsuya Harada

The temporal answering grounding in the video (TAGV) is a new task naturally derived from temporal sentence grounding in the video (TSGV). Given an untrimmed video and a text question, this task aims at locating the matching span from the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Bin Li , Yixuan Weng , Bin Sun , Shutao Li

Multimodal fake news video detection is a crucial research direction for maintaining the credibility of online information. Existing studies primarily verify content authenticity by constructing multimodal feature fusion representations or…

Computer Vision and Pattern Recognition · Computer Science 2026-04-09 Hui Li , Peien Ding , Jun Li , Guoqi Ma , Zhanyu Liu , Ge Xu , Junfeng Yao , Jinsong Su

Video Anomaly Detection (VAD) aims to identify anomalous events in videos and accurately determine their time intervals. Current VAD methods mainly fall into two categories: traditional DNN-based approaches that focus on temporal…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Shibo Gao , Peipei Yang , Yangyang Liu , Yi Chen , Han Zhu , Xuyao Zhang , Linlin Huang

Advertisement (Ad) video violation detection is critical for ensuring platform compliance, but existing methods struggle with precise temporal grounding, noisy annotations, and limited generalization. We propose RAVEN, a novel framework…

Computation and Language · Computer Science 2025-10-21 Deyi Ji , Yuekui Yang , Haiyang Wu , Shaoping Ma , Tianrun Chen , Lanyun Zhu