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Machine learning models in astrophysics are often limited in scope and cannot adapt to data from new instruments or tasks. We introduce SpectraFM, a Transformer-based foundation model architecture that can be pre-trained on stellar spectra…

Instrumentation and Methods for Astrophysics · Physics 2024-11-08 Nolan Koblischke , Jo Bovy

Feature-based transfer is one of the most effective methodologies for transfer learning. Existing studies usually assume that the learned new feature representation is \emph{domain-invariant}, and thus train a transfer model $\mathcal{M}$…

Machine Learning · Computer Science 2022-04-22 Pengfei Wei , Xinghua Qu , Yew Soon Ong , Zejun Ma

Robotic manipulation of unfamiliar objects in new environments is challenging and requires extensive training or laborious pre-programming. We propose a new skill transfer framework, which enables a robot to transfer complex object…

A large amount of data resulting from trajectories of moving objects activities are collected thanks to localization based services and some associated automated processes. Trajectories data can be used either for transactional and analysis…

Databases · Computer Science 2011-02-23 Wided Oueslati , Jalel Akaichi

Trajectory world models play a crucial role in robotic dynamics learning, planning, and control. While recent works have explored trajectory world models for diverse robotic systems, they struggle to scale to a large number of distinct…

Machine Learning · Computer Science 2026-05-21 Yuchen Wang , Jiangtao Kong , Sizhe Wei , Xiaochang Li , Haohong Lin , Hongjue Zhao , Tianyi Zhou , Lu Gan , Huajie Shao

Implementing an autonomous vehicle that is able to output feasible, smooth and efficient trajectories is a long-standing challenge. Several approaches have been considered, roughly falling under two categories: rule-based and learning-based…

Robotics · Computer Science 2022-03-22 Branka Mirchevska , Moritz Werling , Joschka Boedecker

The capability to transfer mastered skills to accomplish a range of similar yet novel tasks is crucial for intelligent robots. In this work, we introduce $\textit{Diff-Transfer}$, a novel framework leveraging differentiable physics…

Robotics · Computer Science 2023-10-11 Yuqi Xiang , Feitong Chen , Qinsi Wang , Yang Gang , Xiang Zhang , Xinghao Zhu , Xingyu Liu , Lin Shao

Human Activity Recognition (HAR) with wearable sensors is challenged by limited interpretability, which significantly impacts cross-dataset generalization. To address this challenge, we propose Motion-Primitive Transformer (MoPFormer), a…

Computer Vision and Pattern Recognition · Computer Science 2025-10-29 Hao Zhang , Zhan Zhuang , Xuehao Wang , Xiaodong Yang , Yu Zhang

Trajectory computing is a pivotal domain encompassing trajectory data management and mining, garnering widespread attention due to its crucial role in various practical applications such as location services, urban traffic, and public…

Time series foundation models (TSFMs) offer strong zero-shot forecasting via large-scale pre-training, yet fine-tuning remains critical for boosting performance in domains with limited public data. With the growing number of TSFMs,…

Machine Learning · Computer Science 2025-09-30 Qingren Yao , Ming Jin , Chengqi Zhang , Chao-Han Huck Yang , Jun Qi , Shirui Pan

Personal robots assisting humans must perform complex manipulation tasks that are typically difficult to specify in traditional motion planning pipelines, where multiple objectives must be met and the high-level context be taken into…

Robotics · Computer Science 2019-03-21 Hejia Zhang , Eric Heiden , Stefanos Nikolaidis , Joseph J. Lim , Gaurav S. Sukhatme

Inevitable domain and task discrepancies in real-world scenarios can impair the generalization performance of the pre-trained deep models for medical data. Therefore, we audaciously propose that we should build a general-purpose medical AI…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Huahui Yi , Ziyuan Qin , Qicheng Lao , Wei Xu , Zekun Jiang , Dequan Wang , Shaoting Zhang , Kang Li

Despite the massive success of fine-tuning Pre-trained Language Models (PLMs), they remain susceptible to out-of-distribution input. Dataset cartography is a simple yet effective dual-model approach that improves the robustness of…

Computation and Language · Computer Science 2024-12-12 Yupei Du , Albert Gatt , Dong Nguyen

Transforming road network data into vector representations using deep learning has proven effective for road network analysis. However, urban road networks' heterogeneous and hierarchical nature poses challenges for accurate representation…

Artificial Intelligence · Computer Science 2025-09-10 Jian Yang , Jiahui Wu , Li Fang , Hongchao Fan , Bianying Zhang , Huijie Zhao , Guangyi Yang , Rui Xin , Xiong You

The widespread use of positioning devices (e.g., GPS) has given rise to a vast body of human movement data, often in the form of trajectories. Understanding human mobility patterns could benefit many location-based applications. In this…

Social and Information Networks · Computer Science 2020-03-18 Meng Chen , Xiaohui Yu , Yang Liu

Recent neural heuristics for the Vehicle Routing Problem (VRP) primarily rely on node coordinates as input, which may be less effective in practical scenarios where real cost metrics-such as edge-based distances-are more relevant. To…

Machine Learning · Computer Science 2025-06-23 Dian Meng , Zhiguang Cao , Yaoxin Wu , Yaqing Hou , Hongwei Ge , Qiang Zhang

Wearable accelerometers are used for a wide range of applications, such as gesture recognition, gait analysis, and sports monitoring. Yet most existing foundation models focus primarily on classifying common daily activities such as…

Machine Learning · Computer Science 2025-09-29 Junyong Park , Oron Levy , Rebecca Adaimi , Asaf Liberman , Gierad Laput , Abdelkareem Bedri

The ability to transfer knowledge gained in previous tasks into new contexts is one of the most important mechanisms of human learning. Despite this, adapting autonomous behavior to be reused in partially similar settings is still an open…

Robotics · Computer Science 2016-08-03 Shreyansh Daftry , J. Andrew Bagnell , Martial Hebert

Offline Reinforcement Learning (RL) is structured to derive policies from static trajectory data without requiring real-time environment interactions. Recent studies have shown the feasibility of framing offline RL as a sequence modeling…

Machine Learning · Computer Science 2023-09-01 Abdelghani Ghanem , Philippe Ciblat , Mounir Ghogho

Legged robots must exhibit robust and agile locomotion across diverse, unstructured terrains, a challenge exacerbated under blind locomotion settings where terrain information is unavailable. This work introduces a hierarchical…

Robotics · Computer Science 2025-11-05 Matheus P. Angarola , Francisco Affonso , Marcelo Becker
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