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In recent years, with the continuous development of significant data industrialization, trajectory data have more and more critical analytical value for urban construction and environmental monitoring. However, the trajectory contains a lot…

Cryptography and Security · Computer Science 2018-04-06 Qilong Han , Dan Lu , Kejia Zhang , Xiaojiang Du , Mohsen Guizani

Analyzing, understanding, and describing human behavior is advantageous in different settings, such as web browsing or traffic navigation. Understanding human behavior naturally helps to improve and optimize the underlying infrastructure or…

Machine Learning · Computer Science 2024-01-09 Tobias Koopmann , Jan Pfister , André Markus , Astrid Carolus , Carolin Wienrich , Andreas Hotho

Human mobility prediction is crucial for applications ranging from location-based recommendations to urban planning, which aims to forecast users' next location visits based on historical trajectories. While existing mobility prediction…

Artificial Intelligence · Computer Science 2026-03-03 Yu Wang , Junshu Dai , Yuchen Ying , Hanyang Yuan , Zunlei Feng , Tongya Zheng , Mingli Song

Ensuring the safety of vulnerable road users through accurate prediction of pedestrian crossing intention (PCI) plays a crucial role in the context of autonomous and assisted driving. Analyzing the set of observation video frames in…

Computer Vision and Pattern Recognition · Computer Science 2025-04-10 Hongbin Liang , Hezhe Qiao , Wei Huang , Qizhou Wang , Mingsheng Shang , Lin Chen

Human travel trajectory mining is crucial for transportation systems, enhancing route optimization, traffic management, and the study of human travel patterns. Previous rule-based approaches without the integration of semantic information…

Artificial Intelligence · Computer Science 2024-08-21 Yifan Liu , Chenchen Kuai , Haoxuan Ma , Xishun Liao , Brian Yueshuai He , Jiaqi Ma

Forecasting trajectories of human-driven vehicles is a crucial problem in autonomous driving. Trajectory forecasting in the urban area is particularly hard due to complex interactions with cars and pedestrians, and traffic lights (TLs).…

Robotics · Computer Science 2020-04-28 Geunseob Oh , Huei Peng

Understanding customer movement within retail spaces is essential for optimizing store layouts. Real-world trajectory data can provide highly accurate insights, but collecting it is costly and often infeasible for many retailers. Heuristics…

Machine Learning · Computer Science 2026-05-19 Ken Ming Lee , Paul Barde , Maxime C. Cohen , Derek Nowrouzezahrai

Real world data often have a long-tailed and open-ended distribution. A practical recognition system must classify among majority and minority classes, generalize from a few known instances, and acknowledge novelty upon a never seen…

Computer Vision and Pattern Recognition · Computer Science 2019-04-17 Ziwei Liu , Zhongqi Miao , Xiaohang Zhan , Jiayun Wang , Boqing Gong , Stella X. Yu

Mobility trajectories are essential for understanding urban dynamics and enhancing urban planning, yet access to such data is frequently hindered by privacy concerns. This research introduces a transformative framework for generating…

Worker location data is key to higher productivity in industrial sites. Cameras are a promising tool for localization in logistics warehouses since they also offer valuable environmental contexts such as package status. However, identifying…

Machine Learning · Computer Science 2025-10-31 Kazuma Kano , Yuki Mori , Shin Katayama , Kenta Urano , Takuro Yonezawa , Nobuo Kawaguchi

The proliferation of smartphone devices has led to the emergence of powerful user services from enabling interactions with friends and business associates to mapping, finding nearby businesses and alerting users in real-time. Moreover,…

Cryptography and Security · Computer Science 2023-02-13 Dimitrios Tomaras , Michail Tsenos , Vana Kalogeraki

Predicting where people can walk in a scene is important for many tasks, including autonomous driving systems and human behavior analysis. Yet learning a computational model for this purpose is challenging due to semantic ambiguity and a…

Computer Vision and Pattern Recognition · Computer Science 2020-08-21 Jin Sun , Hadar Averbuch-Elor , Qianqian Wang , Noah Snavely

Trajectory Representation Learning (TRL) is a powerful tool for spatial-temporal data analysis and management. TRL aims to convert complicated raw trajectories into low-dimensional representation vectors, which can be applied to various…

Machine Learning · Computer Science 2024-03-08 Jiawei Jiang , Dayan Pan , Houxing Ren , Xiaohan Jiang , Chao Li , Jingyuan Wang

Data clustering is a common unsupervised learning method frequently used in exploratory data analysis. However, identifying relevant structures in unlabeled, high-dimensional data is nontrivial, requiring iterative experimentation with…

Human-Computer Interaction · Computer Science 2018-11-29 Marco Cavallo , Çağatay Demiralp

Sharing trajectories is beneficial for many real-world applications, such as managing disease spread through contact tracing and tailoring public services to a population's travel patterns. However, public concern over privacy and data…

Databases · Computer Science 2021-08-23 Teddy Cunningham , Graham Cormode , Hakan Ferhatosmanoglu , Divesh Srivastava

The recent availability of digital traces generated by phone calls and online logins has significantly increased the scientific understanding of human mobility. Until now, however, limited data resolution and coverage have hindered a…

Physics and Society · Physics 2017-03-20 Laura Alessandretti , Piotr Sapiezynski , Sune Lehmann , Andrea Baronchelli

With the rapid information explosion on online social network sites (SNSs), it becomes difficult for users to seek new friends or broaden their social networks in an efficient way. Link prediction, which can effectively conquer this…

Social and Information Networks · Computer Science 2022-01-26 Huizi Wu , Shiyi Wang , Hui Fang

We conduct the first comprehensive security analysis of Tile, the second most popular crowd-sourced location-tracking service behind Apple's AirTags. We identify several exploitable vulnerabilities and design flaws, disproving many of the…

Cryptography and Security · Computer Science 2025-10-02 Akshaya Kumar , Anna Raymaker , Michael Specter

Accurate pedestrian trajectory prediction is crucial for various applications, and it requires a deep understanding of pedestrian motion patterns in dynamic environments. However, existing pedestrian trajectory prediction methods still need…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Pranav Singh Chib , Pravendra Singh

User modeling is crucial to understanding user behavior and essential for improving user experience and personalized recommendations. When users interact with software, vast amounts of command sequences are generated through logging and…

Artificial Intelligence · Computer Science 2022-08-01 Hang Chu , Amir Hosein Khasahmadi , Karl D. D. Willis , Fraser Anderson , Yaoli Mao , Linh Tran , Justin Matejka , Jo Vermeulen