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Retrieval-Augmented Generation (RAG) grounds large language model outputs in external evidence, but remains challenged on multi-hop question answering that requires long reasoning. Recent works scale RAG at inference time along two…

Large language models (LLMs) demonstrate exceptional performance in numerous tasks but still heavily rely on knowledge stored in their parameters. Moreover, updating this knowledge incurs high training costs. Retrieval-augmented generation…

Computation and Language · Computer Science 2024-06-07 Yanming Liu , Xinyue Peng , Xuhong Zhang , Weihao Liu , Jianwei Yin , Jiannan Cao , Tianyu Du

Intelligent voice assistants, such as Apple Siri and Amazon Alexa, are widely used nowadays. These task-oriented dialogue systems require a semantic parsing module in order to process user utterances and understand the action to be…

Computation and Language · Computer Science 2024-09-11 Daniel Fernández-González

Many autonomous robotic applications require object-level understanding when deployed. Actively reconstructing objects of interest, i.e. objects with specific semantic meanings, is therefore relevant for a robot to perform downstream tasks…

Robotics · Computer Science 2024-03-19 Liren Jin , Haofei Kuang , Yue Pan , Cyrill Stachniss , Marija Popović

Accurate open-vocabulary 3D scene understanding requires semantic representations that are both language-aligned and spatially precise at the pixel level, while remaining scalable when lifted to 3D space. However, existing representations…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Junjie Wen , Junlin He , Fei Ma , Jinqiang Cui

Model-based reinforcement learning algorithms are typically more sample efficient than their model-free counterparts, especially in sparse reward problems. Unfortunately, many interesting domains are too complex to specify the complete…

Machine Learning · Computer Science 2022-03-11 Andrew Chester , Michael Dann , Fabio Zambetta , John Thangarajah

Scene understanding is paramount in robotics, self-navigation, augmented reality, and many other fields. To fully accomplish this task, an autonomous agent has to infer the 3D structure of the sensed scene (to know where it looks at) and…

Computer Vision and Pattern Recognition · Computer Science 2020-02-26 Pier Luigi Dovesi , Matteo Poggi , Lorenzo Andraghetti , Miquel Martí , Hedvig Kjellström , Alessandro Pieropan , Stefano Mattoccia

We introduce Recursive Agent Optimization (RAO), a reinforcement learning approach for training recursive agents: agents that can spawn and delegate sub-tasks to new instantiations of themselves recursively. Recursive agents implement an…

Machine Learning · Computer Science 2026-05-08 Apurva Gandhi , Satyaki Chakraborty , Xiangjun Wang , Aviral Kumar , Graham Neubig

This paper presents a reactive planning system that enriches the topological representation of an environment with a tightly integrated semantic representation, achieved by incorporating and exploiting advances in deep perceptual learning…

Task oriented dialog systems typically first parse user utterances to semantic frames comprised of intents and slots. Previous work on task oriented intent and slot-filling work has been restricted to one intent per query and one slot label…

Computation and Language · Computer Science 2018-10-19 Sonal Gupta , Rushin Shah , Mrinal Mohit , Anuj Kumar , Mike Lewis

Open-domain semantic parsing remains a challenging task, as neural models often rely on heuristics and struggle to handle unseen concepts. In this paper, we investigate the potential of large language models (LLMs) for this task and…

Computation and Language · Computer Science 2025-08-21 Xiao Zhang , Qianru Meng , Johan Bos

Retrieval-augmented generation (RAG) has been extensively employed to mitigate hallucinations in large language models (LLMs). However, existing methods for multi-hop reasoning tasks often lack global planning, increasing the risk of…

Computation and Language · Computer Science 2025-11-14 Yijie Zhu , Haojie Zhou , Wanting Hong , Tailin Liu , Ning Wang

Semantic image segmentation is an important computer vision task that is difficult because it consists of both recognition and segmentation. The task is often cast as a structured output problem on an exponentially large output-space, which…

Computer Vision and Pattern Recognition · Computer Science 2017-09-07 Payman Yadollahpour

Task-oriented image semantic communication is a new communication paradigm, which aims to transmit semantics for artificial intelligent (AI) tasks while ignoring the reconstruction quality of the images. However, in some applications, such…

Information Theory · Computer Science 2022-12-05 Fangfang Liu , Wanjie Tong , Yang Yang , Zhengfen Sun , Caili Guo

Driving scenario data play an increasingly vital role in the development of intelligent vehicles and autonomous driving. Accurate and efficient scenario data search is critical for both online vehicle decision-making and planning, and…

Robotics · Computer Science 2025-04-08 Cheng Chang , Jingwei Ge , Jiazhe Guo , Zelin Guo , Binghong Jiang , Li Li

Semantic parsing using sequence-to-sequence models allows parsing of deeper representations compared to traditional word tagging based models. In spite of these advantages, widespread adoption of these models for real-time conversational…

Computation and Language · Computer Science 2021-04-13 Arun Babu , Akshat Shrivastava , Armen Aghajanyan , Ahmed Aly , Angela Fan , Marjan Ghazvininejad

Recently, semantic parsing using hierarchical representations for dialog systems has captured substantial attention. Task-Oriented Parse (TOP), a tree representation with intents and slots as labels of nested tree nodes, has been proposed…

Computation and Language · Computer Science 2022-11-29 Xiaojun Meng , Wenlin Dai , Yasheng Wang , Baojun Wang , Zhiyong Wu , Xin Jiang , Qun Liu

As a specific semantic segmentation task, aerial imagery segmentation has been widely employed in high spatial resolution (HSR) remote sensing images understanding. Besides common issues (e.g. large scale variation) faced by general…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Lin Huang , Qiyuan Dong , Lijun Wu , Jia Zhang , Jiang Bian , Tie-Yan Liu

Understanding the world around us and making decisions about the future is a critical component to human intelligence. As autonomous systems continue to develop, their ability to reason about the future will be the key to their success.…

Computer Vision and Pattern Recognition · Computer Science 2018-11-22 Adam M. Terwilliger , Garrick Brazil , Xiaoming Liu

Language Models and Vision Language Models have recently demonstrated unprecedented capabilities in terms of understanding human intentions, reasoning, scene understanding, and planning-like behaviour, in text form, among many others. In…