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This paper presents OG-RAG, an Ontology-Grounded Retrieval Augmented Generation method designed to enhance LLM-generated responses by anchoring retrieval processes in domain-specific ontologies. While LLMs are widely used for tasks like…

Computation and Language · Computer Science 2024-12-23 Kartik Sharma , Peeyush Kumar , Yunqing Li

In recent years, 3D scene graphs have emerged as a powerful world representation, offering both geometric accuracy and semantic richness. Combining 3D scene graphs with large language models enables robots to reason, plan, and navigate in…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Abdelrhman Werby , Dennis Rotondi , Fabio Scaparro , Kai O. Arras

Zero-shot referring expression comprehension (REC) aims to locate target objects in images given natural language queries without relying on task-specific training data, demanding strong visual understanding capabilities. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Yike Wu , Necva Bolucu , Stephen Wan , Dadong Wang , Jiahao Xia , Jian Zhang

We propose GHR-VQA, Graph-guided Hierarchical Relational Reasoning for Video Question Answering (Video QA), a novel human-centric framework that incorporates scene graphs to capture intricate human-object interactions within video…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Dionysia Danai Brilli , Dimitrios Mallis , Vassilis Pitsikalis , Petros Maragos

Long-horizon planning in realistic environments requires the ability to reason over sequential tasks in high-dimensional state spaces with complex dynamics. Classical motion planning algorithms, such as rapidly-exploring random trees, are…

Robotics · Computer Science 2020-10-14 Brian Ichter , Pierre Sermanet , Corey Lynch

Existing long-context benchmarks for Large Language Models (LLMs) focus on evaluating comprehension of long inputs, while overlooking the evaluation of long reasoning abilities. To address this gap, we introduce LongReasonArena, a benchmark…

Computation and Language · Computer Science 2025-08-28 Jiayu Ding , Shuming Ma , Lei Cui , Nanning Zheng , Furu Wei

Recent advancements in visual odometry systems have improved autonomous navigation; however, challenges persist in complex environments like forests, where dense foliage, variable lighting, and repetitive textures compromise feature…

Robotics · Computer Science 2025-04-03 Thomas Pritchard , Saifullah Ijaz , Ronald Clark , Basaran Bahadir Kocer

Enabling robots to efficiently search for and identify objects in complex, unstructured environments is critical for diverse applications ranging from household assistance to industrial automation. However, traditional scene representations…

Robotics · Computer Science 2025-08-29 Liding Zhang , Zeqi Li , Kuanqi Cai , Qian Huang , Zhenshan Bing , Alois Knoll

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

We present a retrieval-augmented question answering framework for 5G/6G networks, where the Open Radio Access Network (O-RAN) has become central to disaggregated, virtualized, and AI-driven wireless systems. While O-RAN enables multi-vendor…

Networking and Internet Architecture · Computer Science 2026-01-07 Nathan Conger , Nathan Scollar , Kemal Davaslioglu , Yalin E. Sagduyu , Sastry Kompella

Extracting real-time insights from multi-modal data streams from various domains such as healthcare, intelligent transportation, and satellite remote sensing remains a challenge. High computational demands and limited knowledge scope…

Computer Vision and Pattern Recognition · Computer Science 2025-01-27 Murugan Sankaradas , Ravi K. Rajendran , Srimat T. Chakradhar

Answering real-world geospatial questions--such as finding restaurants along a travel route or amenities near a landmark--requires reasoning over both geographic relationships and semantic user intent. However, existing large language…

Information Retrieval · Computer Science 2025-06-12 Dazhou Yu , Riyang Bao , Ruiyu Ning , Jinghong Peng , Gengchen Mai , Liang Zhao

Visual question answering is concerned with answering free-form questions about an image. Since it requires a deep linguistic understanding of the question and the ability to associate it with various objects that are present in the image,…

Machine Learning · Computer Science 2020-07-03 Marcel Hildebrandt , Hang Li , Rajat Koner , Volker Tresp , Stephan Günnemann

Graph-based retrieval-augmented generation (RAG) methods, typically built on knowledge graphs (KGs) with binary relational facts, have shown promise in multi-hop open-domain QA. However, their rigid retrieval schemes and dense similarity…

Computation and Language · Computer Science 2026-02-17 Wen-Sheng Lien , Yu-Kai Chan , Hao-Lung Hsiao , Bo-Kai Ruan , Meng-Fen Chiang , Chien-An Chen , Yi-Ren Yeh , Hong-Han Shuai

Multi-hop Question Answering (MHQA) aims to answer questions that require multi-step reasoning. It presents two key challenges: generating correct reasoning paths in response to the complex user queries, and accurately retrieving essential…

Computation and Language · Computer Science 2026-04-28 Yuqing Fu , Yimin Deng , Wanyu Wang , Yuhao Wang , Yejing Wang , Hongshi Liu , Yiqi Wang , Xiao Han , Maolin Wang , Guoshuai Zhao , Yi Chang , Xiangyu Zhao

The evolution of Remote Sensing Vision-Language Models(RS-VLMs) emphasizes the importance of transitioning from perception-centric recognition toward high-level deductive reasoning to enhance cognitive reliability in complex spatial tasks.…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Wenshuai Li , Xiantai Xiang , Zixiao Wen , Guangyao Zhou , Ben Niu , Feng Wang , Lijia Huang , Qiantong Wang , Yuxin Hu

Retrieval-Augmented Generation (RAG) enables large language models (LLMs) to access external knowledge sources, but the effectiveness of RAG relies on the coordination between the retriever and the generator. Since these components are…

Computation and Language · Computer Science 2025-09-24 Junlin Wang , Zehao Wu , Shaowei Lu , Yanlan Li , Xinghao Huang

Tool-augmented Large Language Models (LLMs) have shown impressive capabilities in remote sensing (RS) applications. However, existing benchmarks assume question-answering input templates over predefined image-text data pairs. These…

Computation and Language · Computer Science 2024-05-03 Simranjit Singh , Michael Fore , Dimitrios Stamoulis

Recent advances in retrieval-augmented generation (RAG) furnish large language models (LLMs) with iterative retrievals of relevant information to handle complex multi-hop questions. These methods typically alternate between LLM reasoning…

Computation and Language · Computer Science 2025-05-27 Rui Li , Quanyu Dai , Zeyu Zhang , Xu Chen , Zhenhua Dong , Ji-Rong Wen

Large Language Models (LLMs) and Knowledge Graphs (KGs) offer a promising approach to robust and explainable Question Answering (QA). While LLMs excel at natural language understanding, they suffer from knowledge gaps and hallucinations.…

Machine Learning · Computer Science 2025-04-15 Jasper Linders , Jakub M. Tomczak