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Trajectory prediction is a critical functionality of autonomous systems that share environments with uncontrolled agents, one prominent example being self-driving vehicles. Currently, most prediction methods do not enforce scene…

Artificial Intelligence · Computer Science 2022-06-28 Yuxiao Chen , Boris Ivanovic , Marco Pavone

Commute Time Distance (CTD) is a random walk based metric on graphs. CTD has found widespread applications in many domains including personalized search, collaborative filtering and making search engines robust against manipulation. Our…

Artificial Intelligence · Computer Science 2011-07-28 Nguyen Lu Dang Khoa , Sanjay Chawla

Rapidly Exploring Random Tree (RRT) algorithms, notably used for nonholonomic vehicle navigation in complex environments, are often not thoroughly evaluated for their specific challenges. This paper presents a first such comparison study of…

Robotics · Computer Science 2025-01-14 Trym Tengesdal , Tom Arne Pedersen , Tor Arne Johansen

Accurate predictions of ship trajectories in crowded environments are essential to ensure safety in inland waterways traffic. Recent advances in deep learning promise increased accuracy even for complex scenarios. While the challenge of…

Machine Learning · Computer Science 2026-03-06 Tom Legel , Dirk Söffker , Roland Schätzle , Kathrin Donandt

Unmanned surface vessels (USVs) are widely used in ocean exploration and environmental protection fields. To ensure that USV can successfully perform its mission, trajectory planning and motion tracking are the two most critical…

Robotics · Computer Science 2022-09-08 Tao Huang , Zhenfeng Xue , Zhe Chen , Yong Liu

Autonomous high-speed navigation through large, complex environments requires real-time generation of agile trajectories that are dynamically feasible, collision-free, and satisfy state or actuator constraints. Modern trajectory planning…

Robotics · Computer Science 2025-12-16 Helene J. Levy , Brett T. Lopez

Object Tracking is essential for many computer vision applications, such as autonomous navigation, surveillance, and robotics. Unlike Passive Object Tracking (POT), which relies on static camera viewpoints to detect and track objects across…

Computer Vision and Pattern Recognition · Computer Science 2025-01-27 Hy Nguyen , Bao Pham , Hung Du , Srikanth Thudumu , Rajesh Vasa , Kon Mouzakis

Active subspace (AS) methods are a valuable tool for understanding the relationship between the inputs and outputs of a Physics simulation. In this paper, an elegant generalization of the traditional ASM is developed to assess the…

Methodology · Statistics 2024-07-23 Kellin N. Rumsey , Zachary K. Hardy , Cory Ahrens , Scott Vander Wiel

There is a growing need to quickly and accurately identify anomalous behavior in ships. This paper applies a variation of the Density Based Spatial Clustering Among Noise (DBSCAN) algorithm to identify such anomalous behavior given a ship's…

Methodology · Statistics 2021-07-09 Carsten Botts

Object class detectors typically apply a window classifier to all the windows in a large set, either in a sliding window manner or using object proposals. In this paper, we develop an active search strategy that sequentially chooses the…

Computer Vision and Pattern Recognition · Computer Science 2015-04-15 Abel Gonzalez-Garcia , Alexander Vezhnevets , Vittorio Ferrari

A methodology based on deep recurrent models for maritime surveillance, over publicly available Automatic Identification System (AIS) data, is presented in this paper. The setup employs a deep Recurrent Neural Network (RNN)-based model, for…

Machine Learning · Computer Science 2024-06-17 Constantine Maganaris , Eftychios Protopapadakis , Nikolaos Doulamis

Inertial Navigation Systems (INS) are algorithms that fuse inertial measurements of angular velocity and specific acceleration with supplementary sensors including GNSS and magnetometers to estimate the position, velocity and attitude, or…

Systems and Control · Electrical Eng. & Systems 2023-08-23 Pieter van Goor , Tarek Hamel , Robert Mahony

Click-through rate (CTR) prediction serves as a cornerstone of recommender systems. Despite the strong performance of current CTR models based on user behavior modeling, they are still severely limited by interaction sparsity, especially in…

Information Retrieval · Computer Science 2025-09-03 Yutian Xiao , Shukuan Wang , Binhao Wang , Zhao Zhang , Yanze Zhang , Shanqi Liu , Chao Feng , Xiang Li , Fuzhen Zhuang

We present an active visual search model for finding objects in unknown environments. The proposed algorithm guides the robot towards the sought object using the relevant stimuli provided by the visual sensors. Existing search strategies…

Robotics · Computer Science 2021-02-08 Amir Rasouli , Pablo Lanillos , Gordon Cheng , John K. Tsotsos

Robust data association is critical for analysis of long-term motion trajectories in complex scenes. In its absence, trajectory precision suffers due to periods of kinematic ambiguity degrading the quality of follow-on analysis. Common…

Machine Learning · Computer Science 2020-11-17 David S. Hayden , Sue Zheng , John W. Fisher

Detecting pedestrians and predicting future trajectories for them are critical tasks for numerous applications, such as autonomous driving. Previous methods either treat the detection and prediction as separate tasks or simply add a…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Zhishuai Zhang , Jiyang Gao , Junhua Mao , Yukai Liu , Dragomir Anguelov , Congcong Li

Underwater navigation is a challenging area in the field of mobile robotics due to inherent constraints in self-localisation and communication in underwater environments. Some of these challenges can be mitigated by using collaborative…

Robotics · Computer Science 2026-05-19 Kanzhong Yao , Xueliang Cheng , Keir Groves , Barry Lennox , Ognjen Marjanovic , Simon Watson

Tenant evictions threaten housing stability and are a major concern for many cities. An open question concerns whether data-driven methods enhance outreach programs that target at-risk tenants to mitigate their risk of eviction. We propose…

Machine Learning · Computer Science 2024-12-25 Anindya Sarkar , Alex DiChristofano , Sanmay Das , Patrick J. Fowler , Nathan Jacobs , Yevgeniy Vorobeychik

The automatic identification system (AIS) reports vessels' static and dynamic information, which are essential for maritime traffic situation awareness. However, AIS transponders can be switched off to hide suspicious activities, such as…

Signal Processing · Electrical Eng. & Systems 2020-02-13 Sandeep Kumar Singh , Frank Heymann

The way we travel is changing rapidly, and Cooperative Intelligent Transportation Systems (C-ITSs) are at the forefront of this evolution. However, the adoption of C-ITSs introduces new risks and challenges, making cybersecurity a top…