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Optimizing delivery routes for last-mile logistics service is challenging and has attracted the attention of many researchers. These problems are usually modeled and solved as variants of vehicle routing problems (VRPs) with challenging…

Artificial Intelligence · Computer Science 2023-03-09 Qian Shao , Shih-Fen Cheng

The growth of e-commerce has resulted in a surge in parcel deliveries, increasing transportation costs and pollution issues. Alternatives to home delivery have emerged, such as the delivery to so-called parcel pick-up points (PUPs), which…

Systems and Control · Electrical Eng. & Systems 2024-03-25 Thi-Thu-Tam Nguyen , Adnane Cabani , Iyadh Cabani , Koen De Turck , Michel Kieffer

Learning accurate and parsimonious point cloud representations of scene surfaces from scratch remains a challenge in 3D representation learning. Existing point-based methods often suffer from the vanishing gradient problem or require a…

Computer Vision and Pattern Recognition · Computer Science 2023-12-08 Yanshu Zhang , Shichong Peng , Alireza Moazeni , Ke Li

This work aims at designing a lightweight convolutional neural network for image super resolution (SR). With simplicity bare in mind, we construct a pretty concise and effective network with a newly proposed pixel attention scheme. Pixel…

Image and Video Processing · Electrical Eng. & Systems 2020-10-05 Hengyuan Zhao , Xiangtao Kong , Jingwen He , Yu Qiao , Chao Dong

Accurately forecasting the future movements of surrounding vehicles is essential for safe and efficient operations of autonomous driving cars. This task is difficult because a vehicle's moving trajectory is greatly determined by its…

Machine Learning · Computer Science 2021-01-15 Jiacheng Pan , Hongyi Sun , Kecheng Xu , Yifei Jiang , Xiangquan Xiao , Jiangtao Hu , Jinghao Miao

The Pickup and Delivery Problem (PDP) is a fundamental and challenging variant of the Vehicle Routing Problem, characterized by tightly coupled pickup--delivery pairs, precedence constraints, and spatial layouts that often exhibit…

Machine Learning · Computer Science 2026-03-12 Wentao Wang , Lifeng Han , Guangyu Zou

The domains of transport and logistics are increasingly relying on autonomous mobile robots for the handling and distribution of passengers or resources. At large system scales, finding decentralized path planning and coordination solutions…

Robotics · Computer Science 2024-10-30 Qingbiao Li , Weizhe Lin , Zhe Liu , Amanda Prorok

Mobile robot path planning methods are often constrained by vast search spaces, resulting in latency in samplingbased algorithms. Learning-based approaches frequently suffer from local region fragmentation and global topological…

Robotics · Computer Science 2026-05-28 Zhanzheng Ma , Cancan Zhao , Shuai Zhang , Bo Ouyang

Attentive Neural Process (ANP) improves the fitting ability of Neural Process (NP) and improves its prediction accuracy, but the higher time complexity of the model imposes a limitation on the length of the input sequence. Inspired by…

Computer Vision and Pattern Recognition · Computer Science 2022-02-07 Xiaohan Yu , Shaochen Mao

In recent years, the long-range attention mechanism of vision transformers has driven significant performance breakthroughs across various computer vision tasks. However, the traditional self-attention mechanism, which processes both…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Tianyi Zhang , Baoxin Li , Jae-sun Seo , Yu Cao

Forecasting the future behavior of all traffic agents in the vicinity is a key task to achieve safe and reliable autonomous driving systems. It is a challenging problem as agents adjust their behavior depending on their intentions, the…

Robotics · Computer Science 2021-12-30 Edoardo Mello Rella , Jan-Nico Zaech , Alexander Liniger , Luc Van Gool

Spatiotemporal forecasting on transportation networks is a complex task that requires understanding how traffic nodes interact within a dynamic, evolving system dictated by traffic flow dynamics and social behavioral patterns. The…

Machine Learning · Computer Science 2025-12-01 Christopher Cheong , Gary Davis , Seongjin Choi

The Localization of the target object for data retrieval is a key issue in the Intelligent and Connected Transportation Systems (ICTS). However, due to lack of intelligence in the traditional transportation system, it can take tremendous…

Computer Vision and Pattern Recognition · Computer Science 2018-04-09 Sijia Chen , Bin Song , Jie Guo , Xiaojiang Du , Mohsen Guizani

Trajectory prediction is crucial for autonomous vehicles. The planning system not only needs to know the current state of the surrounding objects but also their possible states in the future. As for vehicles, their trajectories are…

Robotics · Computer Science 2020-07-07 Chenxu Luo , Lin Sun , Dariush Dabiri , Alan Yuille

Trajectory prediction is critical for applications of planning safe future movements and remains challenging even for the next few seconds in urban mixed traffic. How an agent moves is affected by the various behaviors of its neighboring…

Computer Vision and Pattern Recognition · Computer Science 2021-01-14 Hao Cheng , Wentong Liao , Michael Ying Yang , Bodo Rosenhahn , Monika Sester

A key step in interpreting gas-phase ion mobility coupled with mass spectrometry (IM-MS) data for unknown structure prediction involves identifying the most favorable protonated structure. In the gas phase, the site of protonation is…

Machine Learning · Computer Science 2024-11-28 Hongni Jin , Kenneth M. Merz

The attention mechanism is a core primitive in modern large language models (LLMs) and AI more broadly. Since attention by itself is permutation-invariant, position encoding is essential for modeling structured domains such as language.…

Computation and Language · Computer Science 2026-02-05 Songlin Yang , Yikang Shen , Kaiyue Wen , Shawn Tan , Mayank Mishra , Liliang Ren , Rameswar Panda , Yoon Kim

In decentralized multi-robot navigation, ensuring safe and efficient movement with limited environmental awareness remains a challenge. While robots traditionally navigate based on local observations, this approach falters in complex…

Robotics · Computer Science 2024-06-27 Senthil Hariharan Arul , Amrit Singh Bedi , Dinesh Manocha

Medical image segmentation can provide detailed information for clinical analysis which can be useful for scenarios where the detailed location of a finding is important. Knowing the location of disease can play a vital role in treatment…

Image and Video Processing · Electrical Eng. & Systems 2021-11-23 Abhishek Srivastava , Sukalpa Chanda , Debesh Jha , Michael A. Riegler , Pål Halvorsen , Dag Johansen , Umapada Pal

Physics-Informed Neural Networks (PINNs) have emerged as a tool for approximating the solution of Partial Differential Equations (PDEs) in both forward and inverse problems. PINNs minimize a loss function which includes the PDE residual…

Numerical Analysis · Mathematics 2025-09-23 Coen Visser , Alexander Heinlein , Bianca Giovanardi