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Loop closure can effectively correct the accumulated error in robot localization, which plays a critical role in the long-term navigation of the robot. Traditional appearance-based methods rely on local features and are prone to failure in…

机器人学 · 计算机科学 2022-11-23 Junfeng Yu , Shaojie Shen

Retrieval-Augmented Generation (RAG) has become a pivotal paradigm for Large Language Models (LLMs), yet current approaches struggle with visually rich documents by treating text and images as isolated retrieval targets. Existing methods…

计算与语言 · 计算机科学 2026-01-13 Xuan Li , Yining Wang , Haocai Luo , Shengping Liu , Jerry Liang , Ying Fu , Weihuang , Jun Yu , Junnan Zhu

Visual loop closure detection traditionally relies on place recognition methods to retrieve candidate loops that are validated using computationally expensive RANSAC-based geometric verification. As false positive loop closures…

计算机视觉与模式识别 · 计算机科学 2025-05-29 Martin Büchner , Liza Dahiya , Simon Dorer , Vipul Ramtekkar , Kenji Nishimiya , Daniele Cattaneo , Abhinav Valada

While state-of-the-art image generation models achieve remarkable visual quality, their internal generative processes remain a "black box." This opacity limits human observation and intervention, and poses a barrier to ensuring model…

计算机视觉与模式识别 · 计算机科学 2025-12-10 Young Kyung Kim , Oded Schlesinger , Yuzhou Zhao , J. Matias Di Martino , Guillermo Sapiro

Large language models (LLMs) exhibit remarkable performance across various natural language processing tasks but suffer from immense computational and memory demands, limiting their deployment in resource-constrained environments. To…

机器学习 · 计算机科学 2026-01-29 Lawrence Liu , Inesh Chakrabarti , Yixiao Li , Mengdi Wang , Tuo Zhao , Lin F. Yang

Pre-trained vision-language models (VLMs) learn to align vision and language representations on large-scale datasets, where each image-text pair usually contains a bag of semantic concepts. However, existing open-vocabulary object detectors…

计算机视觉与模式识别 · 计算机科学 2023-02-28 Size Wu , Wenwei Zhang , Sheng Jin , Wentao Liu , Chen Change Loy

It is widely agreed that open-vocabulary-based approaches outperform classical closed-set training solutions for recognizing unseen objects in images for semantic segmentation. Existing open-vocabulary approaches leverage vision-language…

计算机视觉与模式识别 · 计算机科学 2026-02-19 Huadong Tang , Youpeng Zhao , Yan Huang , Min Xu , Jun Wang , Qiang Wu

Fusing cross-category objects to a single coherent object has gained increasing attention in text-to-image (T2I) generation due to its broad applications in virtual reality, digital media, film, and gaming. However, existing methods often…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Zedong Zhang , Ying Tai , Jianjun Qian , Jian Yang , Jun Li

Word translation without parallel corpora has become feasible, rivaling the performance of supervised methods. Recent findings have shown that the accuracy and robustness of unsupervised word translation (UWT) can be improved by making use…

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…

信息检索 · 计算机科学 2025-06-05 Zhefan Wang , Huanjun Kong , Jie Ying , Wanli Ouyang , Nanqing Dong

The past decade has seen the growing popularity of Bag of Features (BoF) approaches to many computer vision tasks, including image classification, video search, robot localization, and texture recognition. Part of the appeal is simplicity.…

计算机视觉与模式识别 · 计算机科学 2011-01-19 Stephen O'Hara , Bruce A. Draper

Loop closure detection (LCD) is a core component of simultaneous localization and mapping (SLAM): it identifies revisited places and enables pose-graph constraints that correct accumulated drift. Classic bag-of-words approaches such as DBoW…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Enguang Fan

LiDAR loop closure detection (LCD) is crucial for consistent Simultaneous Localization and Mapping (SLAM) but faces challenges in robustness and accuracy. Existing methods, including semantic graph approaches, often suffer from coarse…

计算机视觉与模式识别 · 计算机科学 2025-05-08 Xiong Li , Shulei Liu , Xingning Chen , Yisong Wu , Dong Zhu

Reliable loop closure detection remains a critical challenge in 3D LiDAR-based SLAM, especially under sensor noise, environmental ambiguity, and viewpoint variation conditions. RANSAC is often used in the context of loop closures for…

机器人学 · 计算机科学 2026-03-06 Javier Laserna , Saurabh Gupta , Oscar Martinez Mozos , Cyrill Stachniss , Pablo San Segundo

Time series classification is an application of particular interest with the increase of data to monitor. Classical techniques for time series classification rely on point-to-point distances. Recently, Bag-of-Words approaches have been used…

机器学习 · 计算机科学 2016-01-14 Adeline Bailly , Simon Malinowski , Romain Tavenard , Thomas Guyet , Laetitia Chapel

Representing texts as fixed-length vectors is central to many language processing tasks. Most traditional methods build text representations based on the simple Bag-of-Words (BoW) representation, which loses the rich semantic relations…

计算与语言 · 计算机科学 2017-07-19 Ruqing Zhang , Jiafeng Guo , Yanyan Lan , Jun Xu , Xueqi Cheng

Loop closure detection is an important building block that ensures the accuracy and robustness of simultaneous localization and mapping (SLAM) systems. Due to their generalization ability, CNN-based approaches have received increasing…

机器人学 · 计算机科学 2022-11-15 Dasong Gao , Chen Wang , Sebastian Scherer

Simultaneous mapping and localization (SLAM) in an real indoor environment is still a challenging task. Traditional SLAM approaches rely heavily on low-level geometric constraints like corners or lines, which may lead to tracking failure in…

机器人学 · 计算机科学 2019-10-01 Xueyang Kang , Shunying Yuan

Requirement traceability is the process of identifying the inter-dependencies between requirements. It poses a significant challenge when conducted manually, especially when dealing with requirements at various levels of abstraction. In…

人工智能 · 计算机科学 2024-06-21 Baher Mohammad , Riad Sonbol , Ghaida Rebdawi

Explaining neural network models is important for increasing their trustworthiness in real-world applications. Most existing methods generate post-hoc explanations for neural network models by identifying individual feature attributions or…

计算与语言 · 计算机科学 2021-04-14 Hanjie Chen , Song Feng , Jatin Ganhotra , Hui Wan , Chulaka Gunasekara , Sachindra Joshi , Yangfeng Ji