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Benchmarking anomaly detection approaches for multivariate time series is a challenging task due to a lack of high-quality datasets. Current publicly available datasets are too small, not diverse and feature trivial anomalies, which hinders…

机器学习 · 计算机科学 2025-11-13 Lucas Correia , Jan-Christoph Goos , Thomas Bäck , Anna V. Kononova

The ability to generate artificial human movement patterns while meeting location and time constraints is an important problem in the security community, particularly as it enables the study of the analog problem of detecting such patterns…

计算机科学中的逻辑 · 计算机科学 2025-02-14 Divyagna Bavikadi , Dyuman Aditya , Devendra Parkar , Paulo Shakarian , Graham Mueller , Chad Parvis , Gerardo I. Simari

The generation of realistic spatio-temporal trajectories of human mobility is of fundamental importance in a wide range of applications, such as the developing of protocols for mobile ad-hoc networks or what-if analysis in urban ecosystems.…

社会与信息网络 · 计算机科学 2017-12-12 Luca Pappalardo , Filippo Simini

The unavailability of training data is a permanent source of much frustration in research, especially when it is due to privacy concerns. This is particularly true for location data since previous techniques all suffer from the inherent…

密码学与安全 · 计算机科学 2022-03-15 Szilvia Lestyán , Gergely Ács , Gergely Biczók

Agentic AI represents a paradigm shift in enhancing the capabilities of generative AI models. While these systems demonstrate immense potential and power, current evaluation techniques primarily focus on assessing their efficacy in…

人工智能 · 计算机科学 2025-09-30 Hassen Dhrif

While location trajectories offer valuable insights, they also reveal sensitive personal information. Differential Privacy (DP) offers formal protection, but achieving a favourable utility-privacy trade-off remains challenging. Recent works…

密码学与安全 · 计算机科学 2025-06-12 Erik Buchholz , Natasha Fernandes , David D. Nguyen , Alsharif Abuadbba , Surya Nepal , Salil S. Kanhere

Preserving the utility of published datasets while simultaneously providing provable privacy guarantees is a well-known challenge. On the one hand, context-free privacy solutions, such as differential privacy, provide strong privacy…

机器学习 · 计算机科学 2018-02-14 Chong Huang , Peter Kairouz , Xiao Chen , Lalitha Sankar , Ram Rajagopal

Gait recognition aims to identify a person at a distance, serving as a promising solution for long-distance and less-cooperation pedestrian recognition. Recently, significant advancements in gait recognition have achieved inspiring success…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Chuanfu Shen , Shiqi Yu , Jilong Wang , George Q. Huang , Liang Wang

Human mobility datasets have seen increasing adoption in the past decade, enabling diverse applications that leverage the high precision of measured trajectories relative to other human mobility datasets. However, there are concerns about…

社会与信息网络 · 计算机科学 2025-05-12 Thomas H. Li , Francisco Barreras

As mobile devices and location-based services are increasingly developed in different smart city scenarios and applications, many unexpected privacy leakages have arisen due to geolocated data collection and sharing. User re-identification…

机器学习 · 计算机科学 2022-08-11 Yuting Zhan , Hamed Haddadi , Afra Mashhadi

We present an innovative framework, Crowdsourcing Autonomous Traffic Simulation (CATS) framework, in order to safely implement and realize orderly traffic flows. We firstly provide a semantic description of the CATS framework using theories…

图形学 · 计算机科学 2023-03-08 Hua Wang , Wenshan Zhao , Zhigang Deng , Mingliang Xu

Pedestrian trajectory prediction is a critical technology in the evolution of self-driving cars toward complete artificial intelligence. Over recent years, focusing on the trajectories of pedestrians to model their social interactions has…

计算机视觉与模式识别 · 计算机科学 2025-01-15 Jiajia Xie , Sheng Zhang , Beihao Xia , Zhu Xiao , Hongbo Jiang , Siwang Zhou , Zheng Qin , Hongyang Chen

The widespread use of big data across sectors has raised major privacy concerns, especially when sensitive information is shared or analyzed. Regulations such as GDPR and HIPAA impose strict controls on data handling, making it difficult to…

机器学习 · 计算机科学 2025-12-10 Anantaa Kotal , Anupam Joshi

Movement synchrony refers to the dynamic temporal connection between the motions of interacting people. The applications of movement synchrony are wide and broad. For example, as a measure of coordination between teammates, synchrony scores…

计算机视觉与模式识别 · 计算机科学 2022-08-03 Jicheng Li , Anjana Bhat , Roghayeh Barmaki

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…

密码学与安全 · 计算机科学 2018-04-06 Qilong Han , Dan Lu , Kejia Zhang , Xiaojiang Du , Mohsen Guizani

Providing meaningful privacy to users of location based services is particularly challenging when multiple locations are revealed in a short period of time. This is primarily due to the tremendous degree of dependence that can be…

人工智能 · 计算机科学 2021-02-25 Casey Meehan , Kamalika Chaudhuri

The sharing of large-scale transportation data is beneficial for transportation planning and policymaking. However, it also raises significant security and privacy concerns, as the data may include identifiable personal information, such as…

机器学习 · 计算机科学 2025-02-14 Chengen Wang , Alvaro Cardenas , Gurcan Comert , Murat Kantarcioglu

Predicting the trajectories of vehicles is crucial for the development of autonomous driving (AD) systems, particularly in complex and dynamic traffic environments. In this study, we introduce HiT (Human-like Trajectory Prediction), a novel…

机器人学 · 计算机科学 2025-05-29 Haicheng Liao , Zhenning Li , Guohui Zhang , Keqiang Li , Chengzhong Xu

Contextual information is vital for accurate trajectory prediction. For instance, the intricate flying behavior of migratory birds hinges on their analysis of environmental cues such as wind direction and air pressure. However, the diverse…

机器学习 · 计算机科学 2024-07-11 Jiang Wu , Dongyu Liu , Yuchen Lin , Yingcai Wu

With current technology, a number of entities have access to user mobility traces at different levels of spatio-temporal granularity. At the same time, users frequently reveal their location through different means, including geo-tagged…

密码学与安全 · 计算机科学 2018-11-16 Apostolos Pyrgelis , Nicolas Kourtellis , Ilias Leontiadis , Joan Serrà , Claudio Soriente