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Retrieval augmented generation (RAG) has been widely adopted to help Large Language Models (LLMs) to process tasks involving long documents. However, existing retrieval models are not designed for long document retrieval and fail to address…

Information Retrieval · Computer Science 2026-02-13 David Jiahao Fu , Lam Thanh Do , Jiayu Li , Kevin Chen-Chuan Chang

Retrieval-augmented generation (RAG) typically relies on a flat retrieval paradigm that maps queries directly to static, isolated text segments. This approach struggles with more complex tasks that require the conditional retrieval and…

Computation and Language · Computer Science 2026-05-19 Jihao Dai , Dingjun Wu , Yuxuan Chen , Zheni Zeng , Yukun Yan , Zhenghao Liu , Maosong Sun

Convolutional neural networks have become a popular research in the field of finger vein recognition because of their powerful image feature representation. However, most researchers focus on improving the performance of the network by…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Zhongxia Zhang , Mingwen Wang

In recent years, text-to-video retrieval methods based on CLIP have experienced rapid development. The primary direction of evolution is to exploit the much wider gamut of visual and textual cues to achieve alignment. Concretely, those…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Kaibin Tian , Yanhua Cheng , Yi Liu , Xinglin Hou , Quan Chen , Han Li

We investigate the gains in precision and speed, that can be obtained by using Convolutional Networks (ConvNets) for on-the-fly retrieval - where classifiers are learnt at run time for a textual query from downloaded images, and used to…

Computer Vision and Pattern Recognition · Computer Science 2014-11-18 Ken Chatfield , Karen Simonyan , Andrew Zisserman

Content Based Image Retrieval(CBIR) is one of the important subfield in the field of Information Retrieval. The goal of a CBIR algorithm is to retrieve semantically similar images in response to a query image submitted by the end user. CBIR…

Information Retrieval · Computer Science 2014-09-03 Vikas Verma

Evaluating retrieval-augmented generation (RAG) presents challenges, particularly for retrieval models within these systems. Traditional end-to-end evaluation methods are computationally expensive. Furthermore, evaluation of the retrieval…

Computation and Language · Computer Science 2024-04-23 Alireza Salemi , Hamed Zamani

Data generation is a fundamental research problem in data management due to its diverse use cases, ranging from testing database engines to data-specific applications. However, real-world entities often involve complex interactions that…

Databases · Computer Science 2024-12-13 Fan Li , Xiaoyang Wang , Dawei Cheng , Cong Chen , Ying Zhang , Xuemin Lin

Long video understanding requires more than large context windows. It also needs a memory mechanism that decides what visual evidence to retain, keeps it searchable over long horizons, and grounds later reasoning in recoverable observations…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Aiden Yiliu Li , Nels Numan , Anthony Steed

Retrieval-augmented generation (RAG) is a powerful technique that enhances downstream task execution by retrieving additional information, such as knowledge, skills, and tools from external sources. Graph, by its intrinsic "nodes connected…

Visual Retrieval-Augmented Generation (VRAG) empowers Vision-Language Models to retrieve and reason over visually rich documents. To tackle complex queries requiring multi-step reasoning, agentic VRAG systems interleave reasoning with…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Yucheng Shen , Jiulong Wu , Jizhou Huang , Dawei Yin , Lingyong Yan , Min Cao

The video visual relation detection (VidVRD) task is to identify objects and their relationships in videos, which is challenging due to the dynamic content, high annotation costs, and long-tailed distribution of relations. Visual language…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Qi Liu , Weiying Xue , Yuxiao Wang , Zhenao Wei

We propose an approach to learn spatio-temporal features in videos from intermediate visual representations we call "percepts" using Gated-Recurrent-Unit Recurrent Networks (GRUs).Our method relies on percepts that are extracted from all…

Computer Vision and Pattern Recognition · Computer Science 2016-03-02 Nicolas Ballas , Li Yao , Chris Pal , Aaron Courville

Video Visual Relation Detection (VidVRD), has received significant attention of our community over recent years. In this paper, we apply the state-of-the-art video object tracklet detection pipeline MEGA and deepSORT to generate tracklet…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Kaifeng Gao , Long Chen , Yifeng Huang , Jun Xiao

Retrieval-augmented generation (RAG) is a paradigm that augments large language models (LLMs) with external knowledge to tackle knowledge-intensive question answering. While several benchmarks evaluate Multimodal LLMs (MLLMs) under…

Computation and Language · Computer Science 2025-08-18 Yin Wu , Quanyu Long , Jing Li , Jianfei Yu , Wenya Wang

Variance reduction (VR) methods employ stochastic gradients with decreasing variance, and they have been widely applied to solve large-scale optimization problems in machine learning because of their efficiency. Existing theoretical studies…

Machine Learning · Computer Science 2026-05-28 Yunwen Lei , Zimeng Wang , Xiaoming Yuan

Partially Relevant Video Retrieval (PRVR) aims to retrieve untrimmed videos based on text queries that describe only partial events. Existing methods suffer from incomplete global contextual perception, struggling with query ambiguity and…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Jun Li , Xuhang Lou , Jinpeng Wang , Yuting Wang , Yaowei Wang , Shu-Tao Xia , Bin Chen

Text-guided Video Temporal Grounding (VTG) aims to localize relevant segments in untrimmed videos based on textual descriptions, encompassing two subtasks: Moment Retrieval (MR) and Highlight Detection (HD). Although previous typical…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Zhuo Cao , Bingqing Zhang , Heming Du , Xin Yu , Xue Li , Sen Wang

Image-to-video generation has made remarkable progress with the advancements in diffusion models, yet generating videos with realistic motion remains highly challenging. This difficulty arises from the complexity of accurately modeling…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Chenhui Zhu , Yilu Wu , Shuai Wang , Gangshan Wu , Limin Wang

While content-based image retrieval (CBIR) has been extensively studied in natural image retrieval, its application to medical images presents ongoing challenges, primarily due to the 3D nature of medical images. Recent studies have shown…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Farnaz Khun Jush , Steffen Vogler , Tuan Truong , Matthias Lenga