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Vehicle movement is frequently captured in the form of GPS trajectories, i.e., sequences of timestamped GPS locations. Such data is widely used for various tasks such as travel-time estimation, trajectory recovery, and trajectory…

Machine Learning · Computer Science 2025-05-14 Yan Lin , Jilin Hu , Shengnan Guo , Bin Yang , Christian S. Jensen , Youfang Lin , Huaiyu Wan

Vehicular mobility underscores the need for collaborative misbehavior detection at the vehicular edge. However, locally trained misbehavior detection models are susceptible to adversarial attacks that aim to deliberately influence learning…

Networking and Internet Architecture · Computer Science 2024-09-05 Roshan Sedar , Charalampos Kalalas , Paolo Dini , Francisco Vazquez-Gallego , Jesus Alonso-Zarate , Luis Alonso

Transfer learning borrows knowledge from a source domain to facilitate learning in a target domain. Two primary issues to be addressed in transfer learning are what and how to transfer. For a pair of domains, adopting different transfer…

Artificial Intelligence · Computer Science 2017-08-21 Ying Wei , Yu Zhang , Qiang Yang

We propose SwitchTT, a multi-task extension to Trajectory Transformer but enhanced with two striking features: (i) exploiting a sparsely activated model to reduce computation cost in multi-task offline model learning and (ii) adopting a…

Machine Learning · Computer Science 2022-03-16 Qinjie Lin , Han Liu , Biswa Sengupta

Conventional control, such as model-based control, is commonly utilized in autonomous driving due to its efficiency and reliability. However, real-world autonomous driving contends with a multitude of diverse traffic scenarios that are…

Robotics · Computer Science 2024-03-08 Vindula Jayawardana , Sirui Li , Cathy Wu , Yashar Farid , Kentaro Oguchi

Trajectory representation learning plays a pivotal role in supporting various downstream tasks. Traditional methods in order to filter the noise in GPS trajectories tend to focus on routing-based methods used to simplify the trajectories.…

Machine Learning · Computer Science 2024-02-28 Zhipeng Ma , Zheyan Tu , Xinhai Chen , Yan Zhang , Deguo Xia , Guyue Zhou , Yilun Chen , Yu Zheng , Jiangtao Gong

Cross-modal retrieval has drawn wide interest for retrieval across different modalities of data. However, existing methods based on DNN face the challenge of insufficient cross-modal training data, which limits the training effectiveness…

Multimedia · Computer Science 2017-08-16 Xin Huang , Yuxin Peng , Mingkuan Yuan

Knowledge Tracing (KT) is a fundamental task in Intelligent Tutoring Systems (ITS), which aims to model the dynamic knowledge states of students based on their interaction histories. However, existing KT models often rely on a global…

Computers and Society · Computer Science 2025-05-09 Han Liao , Shuaishuai Zu

The widespread use of GPS devices has driven advances in spatiotemporal data mining, enabling machine learning models to simulate human decision making and generate realistic trajectories, addressing both data collection costs and privacy…

Machine Learning · Computer Science 2025-10-09 Zhiyang Zhang , Ningcong Chen , Xin Zhang , Yanhua Li , Shen Su , Hui Lu , Jun Luo

Current autonomous driving systems often favor end-to-end frameworks, which take sensor inputs like images and learn to map them into trajectory space via neural networks. Previous work has demonstrated that models can achieve better…

Computer Vision and Pattern Recognition · Computer Science 2025-12-10 Zebin Xing , Pengxuan Yang , Linbo Wang , Yichen Zhang , Yiming Hu , Yupeng Zheng , Junli Wang , Yinfeng Gao , Guang Li , Kun Ma , Long Chen , Zhongpu Xia , Qichao Zhang , Hangjun Ye , Dongbin Zhao

Pervasive integration of GPS-enabled devices and data acquisition technologies has led to an exponential increase in GPS trajectory data, fostering advancements in spatial-temporal data mining research. Nonetheless, GPS trajectories contain…

Machine Learning · Computer Science 2023-10-25 Yuanshao Zhu , Yongchao Ye , Shiyao Zhang , Xiangyu Zhao , James J. Q. Yu

Connected autonomous vehicles (CAVs) must simultaneously perform multiple tasks, such as object detection, semantic segmentation, depth estimation, trajectory prediction, motion prediction, and behaviour prediction, to ensure safe and…

Robotics · Computer Science 2025-08-07 Jiayuan Wang , Farhad Pourpanah , Q. M. Jonathan Wu , Ning Zhang

Multi-task learning is assumed as a powerful inference method, specifically, where there is a considerable correlation between multiple tasks, predicting them in an unique framework may enhance prediction results. This research challenges…

Machine Learning · Computer Science 2021-10-26 Ali Yazdizadeh , Arash Kalatian , Zachary Patterson , Bilal Farooq

Mobility on demand (MoD) systems show great promise in realizing flexible and efficient urban transportation. However, significant technical challenges arise from operational decision making associated with MoD vehicle dispatch and fleet…

Systems and Control · Electrical Eng. & Systems 2022-01-20 Erotokritos Skordilis , Yi Hou , Charles Tripp , Matthew Moniot , Peter Graf , David Biagioni

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

Deep neural networks have demonstrated superior performance in short-term traffic forecasting. However, most existing traffic forecasting systems assume that the training and testing data are drawn from the same underlying distribution,…

Machine Learning · Computer Science 2021-12-01 Yichao Lu

In this paper, a general moving object trajectories framework is put forward to allow independent applications processing trajectories data benefit from a high level of interoperability, information sharing as well as an efficient answer…

Databases · Computer Science 2012-05-09 Azedine Boulmakoul , Lamia Karim , Ahmed Lbath

Learning large-scale pre-trained models on broad-ranging data and then transfer to a wide range of target tasks has become the de facto paradigm in many machine learning (ML) communities. Such big models are not only strong performers in…

Information Retrieval · Computer Science 2025-09-23 Jie Wang , Fajie Yuan , Mingyue Cheng , Joemon M. Jose , Chenyun Yu , Beibei Kong , Zhijin Wang , Bo Hu , Zang Li

In real-world sequential decision making tasks like autonomous driving, robotics, and healthcare, learning from observed state-action trajectories is critical for tasks like imitation, classification, and clustering. For example,…

Machine Learning · Computer Science 2025-01-20 Zichang Ge , Changyu Chen , Arunesh Sinha , Pradeep Varakantham

Currently, under supervised learning, a model pretrained by a large-scale nature scene dataset and then fine-tuned on a few specific task labeling data is the paradigm that has dominated the knowledge transfer learning. It has reached the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-15 Tong Zhang , Peng Gao , Hao Dong , Yin Zhuang , Guanqun Wang , Wei Zhang , He Chen