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Efficient question-answering (QA) over extensive scientific literature is essential for evidence-based engineering decision-making. Retrieval-augmented generation (RAG) is increasingly applied to question-answering over long academic…

Information Retrieval · Computer Science 2026-03-20 Rui Yu , Tianyi Wang , Ruixia Liu , Yinglong Wang

Retrieval-Augmented Generation (RAG) encounters efficiency challenges when scaling to massive knowledge bases while preserving contextual relevance. We propose Hash-RAG, a framework that integrates deep hashing techniques with systematic…

Information Retrieval · Computer Science 2025-06-04 Jinyu Guo , Xunlei Chen , Qiyang Xia , Zhaokun Wang , Jie Ou , Libo Qin , Shunyu Yao , Wenhong Tian

Zero-Shot Object Navigation in unknown environments poses significant challenges for Unmanned Aerial Vehicles (UAVs) due to the conflict between high-level semantic reasoning requirements and limited onboard computational resources. To…

Robotics · Computer Science 2026-02-04 Weiqi Gai , Yuman Gao , Yuan Zhou , Yufan Xie , Zhiyang Liu , Yuze Wu , Xin Zhou , Fei Gao , Zhijun Meng

Retrieval-Augmented Generation (RAG) has become a core paradigm for enhancing factual grounding and multi-hop reasoning in Large Language Models (LLMs). Traditional text-based RAG often retrieves logically irrelevant pseudo-evidence, while…

Artificial Intelligence · Computer Science 2026-05-08 Jiarui Zhong , Hong Cai Chen

Research question answering requires accurate retrieval and contextual understanding of scientific literature. However, current Retrieval-Augmented Generation (RAG) methods often struggle to balance complex document relationships with…

Information Retrieval · Computer Science 2025-01-28 Yuntong Hu , Zhihan Lei , Zhongjie Dai , Allen Zhang , Abhinav Angirekula , Zheng Zhang , Liang Zhao

Large Language Models (LLMs) have achieved impressive progress in natural language processing, but their limited ability to retain long-term context constrains performance on document-level or multi-turn tasks. Retrieval-Augmented…

Computation and Language · Computer Science 2025-05-20 Zhangyu Wang , Siyuan Gao , Rong Zhou , Hao Wang , Li Ning

Recently, Retrieval-Augmented Generation (RAG) has achieved remarkable success in addressing the challenges of Large Language Models (LLMs) without necessitating retraining. By referencing an external knowledge base, RAG refines LLM…

Artificial Intelligence · Computer Science 2024-09-11 Boci Peng , Yun Zhu , Yongchao Liu , Xiaohe Bo , Haizhou Shi , Chuntao Hong , Yan Zhang , Siliang Tang

Knowledge graphs (KGs), which store an extensive number of relational facts (head, relation, tail), serve various applications. While many downstream tasks highly rely on the expressive modeling and predictive embedding of KGs, most of the…

Information Retrieval · Computer Science 2024-05-01 Zihao Li , Yuyi Ao , Jingrui He

This paper presents a new approach to estimate accurate and robust 3D semantic correspondence with the hierarchical neural semantic representation. Our work has three key contributions. First, we design the hierarchical neural semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Keyu Du , Jingyu Hu , Haipeng Li , Hao Xu , Haibing Huang , Chi-Wing Fu , Shuaicheng Liu

The increasing number of academic papers poses significant challenges for researchers to efficiently acquire key details. While retrieval augmented generation (RAG) shows great promise in large language model (LLM) based automated question…

Computation and Language · Computer Science 2025-06-03 Ruisheng Cao , Hanchong Zhang , Tiancheng Huang , Zhangyi Kang , Yuxin Zhang , Liangtai Sun , Hanqi Li , Yuxun Miao , Shuai Fan , Lu Chen , Kai Yu

Deep generative models have shown promising results in generating realistic images, but it is still non-trivial to generate images with complicated structures. The main reason is that most of the current generative models fail to explore…

Machine Learning · Computer Science 2018-07-12 Kun Xu , Haoyu Liang , Jun Zhu , Hang Su , Bo Zhang

Ambiguity poses a major challenge to large language models (LLMs) used as robotic planners. In this letter, we present Scene Graph-Chain-of-Thought (SG-CoT), a two-stage framework where LLMs iteratively query a scene graph representation of…

Robotics · Computer Science 2026-03-23 Akshat Rana , Peeyush Agarwal , K. P. S. Rana , Amarjit Malhotra

In this article, we propose a novel navigation framework that leverages a two layered graph representation of the environment for efficient large-scale exploration, while it integrates a novel uncertainty awareness scheme to handle dynamic…

Robotics · Computer Science 2024-02-07 Akash Patel , Mario A V Saucedo , Christoforos Kanellakis , George Nikolakopoulos

In this paper, we introduce Technical-Embeddings, a novel framework designed to optimize semantic retrieval in technical documentation, with applications in both hardware and software development. Our approach addresses the challenges of…

Information Retrieval · Computer Science 2025-09-05 Songjiang Lai , Tsun-Hin Cheung , Ka-Chun Fung , Kaiwen Xue , Kwan-Ho Lin , Yan-Ming Choi , Vincent Ng , Kin-Man Lam

Scene graphs have been recently introduced into 3D spatial understanding as a comprehensive representation of the scene. The alignment between 3D scene graphs is the first step of many downstream tasks such as scene graph aided point cloud…

Computer Vision and Pattern Recognition · Computer Science 2024-03-29 Yaxu Xie , Alain Pagani , Didier Stricker

We propose SNI-SLAM, a semantic SLAM system utilizing neural implicit representation, that simultaneously performs accurate semantic mapping, high-quality surface reconstruction, and robust camera tracking. In this system, we introduce…

Robotics · Computer Science 2024-03-29 Siting Zhu , Guangming Wang , Hermann Blum , Jiuming Liu , Liang Song , Marc Pollefeys , Hesheng Wang

Efficient transmission of 3D point cloud data is critical for advanced perception in centralized and decentralized multi-agent robotic systems, especially nowadays with the growing reliance on edge and cloud-based processing. However, the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Nikolaos Stathoulopoulos , Christoforos Kanellakis , George Nikolakopoulos

Video Semantic Role Labeling (VidSRL) aims to detect the salient events from given videos, by recognizing the predict-argument event structures and the interrelationships between events. While recent endeavors have put forth methods for…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Yu Zhao , Hao Fei , Yixin Cao , Bobo Li , Meishan Zhang , Jianguo Wei , Min Zhang , Tat-Seng Chua

Completing a corrupted image with correct structures and reasonable textures for a mixed scene remains an elusive challenge. Since the missing hole in a mixed scene of a corrupted image often contains various semantic information,…

Computer Vision and Pattern Recognition · Computer Science 2020-07-13 Liang Liao , Jing Xiao , Zheng Wang , Chia-Wen Lin , Shin'ichi Satoh

In this paper, we propose a neural network architecture for scale-invariant semantic segmentation using RGB-D images. We utilize depth information as an additional modality apart from color images only. Especially in an outdoor scene which…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Mohammad Dawud Ansari , Alwi Husada , Didier Stricker