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Wei Liu

Hong Kong Polytechnic University

Hung Hom

Kowloon, Kowloon

Hong Kong

SCHOLARLY PAPERS

16

DOWNLOADS

1,271

TOTAL CITATIONS

18

Scholarly Papers (16)

Path Pool Based Transformer Model in Reinforcement Framework for Dynamic Urban Drone Delivery Problem

Transportation Research Part C: Emerging Technologies, volume 177, 2025[10.1016/j.trc.2025.105165]
Number of pages: 28 Posted: 11 Jun 2024 Last Revised: 02 Jun 2025
City Univ. of Hong Kong, Lingnan University, Hong Kong Polytechnic University, Sichuan University and City University of Hong Kong (CityU)
Downloads 118 (607,238)

Abstract:

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Drone delivery, Dynamic routing, Deep reinforcement learning, Transformer, multi-agent

Path Pool Based Transformer Model in Reinforcement Framework for Dynamic Urban Drone Delivery Problem

Number of pages: 31 Posted: 31 Dec 2024 Last Revised: 09 Jun 2025
City Univ. of Hong Kong, Lingnan University, Hong Kong Polytechnic University, Sichuan University and City University of Hong Kong (CityU)
Downloads 33 (1,311,254)

Abstract:

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Drone delivery, Dynamic routing, Deep reinforcement learning, Transformer, Multiagent

2.

Can Urban Co-Modality Benefit both Users and Operators?

Number of pages: 34 Posted: 13 Apr 2023
The University of Hong Kong - Department of Industrial and Manufacturing Systems Engineering, The University of Hong Kong - University of Hong Kong, Hong Kong Polytechnic University and University of New South Wales (UNSW)
Downloads 128 (565,439)

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Co-modality, Profit, Consumer surplus, Cooperative game, Non-cooperative game, Pareto-improving

3.

On the Effects of Airport Capacity Expansion Under Responsive Airlines and Elastic Passenger Demand

Number of pages: 27 Posted: 24 Mar 2022
The University of Hong Kong - University of Hong Kong, The University of Hong Kong - University of Hong Kong, Hong Kong Polytechnic University and Imperial College London - Department of Civil and Environmental Engineering
Downloads 117 (608,822)
Citation 1

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Airport expansion, Air traffic congestion, Airlines competition, Sequential game, Welfare effects

4.

Modeling and Managing the Joint Network Equilibrium of Parking and Travel Choices Under Mixed Traffic of Shared and Private Autonomous Vehicles

Number of pages: 26 Posted: 07 May 2022
Zhuoye Zhang, Wei Liu and Fangni Zhang
The University of Hong Kong - University of Hong Kong, Hong Kong Polytechnic University and The University of Hong Kong - University of Hong Kong
Downloads 108 (649,907)
Citation 8

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Shared-autonomous vehicles, Private-autonomous vehicles, Parking choice, Route choice, Mixed traffic equilibrium, Operation strategies.

5.

Joint Optimization of Airport Slot Allocation and Gate Assignment: A Stochastic Integer Programming Approach

Number of pages: 43 Posted: 25 Dec 2024
Xuanji Long, Mingzhi Lyu and Wei Liu
Hong Kong Polytechnic University, Hong Kong Polytechnic University and Hong Kong Polytechnic University
Downloads 103 (684,672)
Citation 1

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airport slot scheduling, gate assignment, stochastic integer programming, Benders-based decomposition, rolling horizon

6.

Tugboat electrification planning for container ports

Number of pages: 42 Posted: 03 Dec 2024
Hong Kong Polytechnic University, Hong Kong Polytechnic University, Hong Kong Polytechnic University, Hong Kong University of Science and Technology (Guangzhou) and Hong Kong Polytechnic University
Downloads 103 (684,672)
Citation 2

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Maritime transportation, Green port operations, Tugboat electrification, Integer programming

7.

On Urban Co-modality: Non-cooperative and Cooperative Games Among Freight Forwarder, Carrier and Transit Operator

Number of pages: 32 Posted: 31 May 2023
The University of Hong Kong - Department of Industrial and Manufacturing Systems Engineering, Hong Kong Polytechnic University, The University of Hong Kong - University of Hong Kong and University of New South Wales (UNSW)
Downloads 83 (783,685)
Citation 2

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Co-modality, Freight on transit, Cooperative game, Non-cooperative game

8.

Unsupervised Knowledge Adaptation for Passenger Demand Forecasting

Number of pages: 20 Posted: 09 Mar 2022
University of New South Wales (UNSW), Shanghai Artificial Intelligence Laboratory, Hong Kong Polytechnic University, University of New South Wales (UNSW) and Australian National University (ANU) - College of Engineering and Computer Science
Downloads 69 (883,195)
Citation 4

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Demand Forecasting, Unsupervised Learning, Knowledge Adaptation

9.

Modelling and Improving the Passenger Evacuation Process in a Bi-Modal System with Bus and E-Hailing Modes after Mass Gathering Events

Number of pages: 28 Posted: 11 Apr 2022
affiliation not provided to SSRN, Tongji University - School of Economics and Management, Hong Kong Polytechnic University and Tongji University - School of Economics and Management
Downloads 65 (916,100)

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bi-modal, e-hailing, demand surge, passenger evacuation, macroscopic fundamental diagram (MFD), perimeter control

10.

Capacity Allocation and Tolling-Rewarding Schemes for the Morning Commute with Carpooling

Number of pages: 39 Posted: 23 Apr 2022
University of New South Wales (UNSW), Dalian Maritime University, Hong Kong Polytechnic University, University of New South Wales (UNSW) and Australian National University (ANU) - College of Engineering and Computer Science
Downloads 62 (942,565)

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Bottleneck model, Carpooling, Temporal capacity allocation, Braking or tactical waiting, Step tolling-rewarding

11.

A Mamba-based Probabilistic Generative Neural Network for Estimating Urban Pedestrian Volumes

Number of pages: 32 Posted: 02 Oct 2025
Hong Kong Polytechnic University, The University of Hong Kong, Tongji University, The University of Hong Kong, Australian National University (ANU) - College of Engineering and Computer Science and Hong Kong Polytechnic University
Downloads 58 (980,173)

Abstract:

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Pedestrian Volume Estimation, Deep Learning, Variational Auto-Encoder, Mamba

12.

Viability of Piloted and Pilot-Less Air Metro: A Service Network Design for Scheduled Urban Air Mobility

Number of pages: 38 Posted: 01 Dec 2022
University of New South Wales (UNSW), University of New South Wales (UNSW) - School of Aviation, University of New South Wales (UNSW) and Hong Kong Polytechnic University
Downloads 58 (980,173)

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Air metro, Autonomous VTOL, Rolling horizon, Time-space network, Urban air mobility

13.

Real-Time Coordinated Path Planning for Unmanned Aerial Vehicles and Unmanned Surface Vehicles in Maritime Monitoring under Travel Time and Demand Uncertainty

Number of pages: 31 Posted: 12 Sep 2025
Qingying He, Wei Liu, Hongbo Ye and Yong Ma
Hong Kong Polytechnic University, Hong Kong Polytechnic University, Hong Kong Polytechnic University and Wuhan University of Technology
Downloads 54 (1,020,567)

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Maritime Monitoring, Coordinated Path Planning, Unmanned Aerial Vehicles, Unmanned Surface Vehicles, Branch-and-Price-and-Cut, Column-and-Constraint Generation Based Metaheuristic

14.

Optimizing OD-Based up-Front Discounting Strategies for Dynamic Ride Pooling Services

Number of pages: 35 Posted: 09 Apr 2024
Tongji University - School of Economics and Management, Tongji University - School of Economics and Management, Tongji University - School of Economics and Management, Tongji University - School of Economics and Management and Hong Kong Polytechnic University
Downloads 53 (1,031,043)

Abstract:

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dynamic ridepooling, up-front pricing strategy, derivative-free optimization

15.

Coordinated Path Planning of Unmanned Aerial Vehicles and Unmanned Surface Vehicles for Maritime Monitoring

Number of pages: 42 Posted: 03 Sep 2025
Hong Kong Polytechnic University, Hong Kong Polytechnic University, Hong Kong Polytechnic University, Wuhan University of Technology and Tongji University
Downloads 46 (1,121,190)

Abstract:

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Maritime Monitoring, Coordinated Path Planning, Unmanned Aerial Vehicles, Unmanned Surface Vehicles, Branch-And-Price-And-Cut, Adaptive Large Neighbourhood Search

16.

A Dynamic Gating Mixture-of-Experts (MoE) Model for Flight Delay Prediction

Number of pages: 26 Posted: 19 Mar 2026
Tongji University, Tongji University, affiliation not provided to SSRN, Hong Kong Polytechnic University and Tongji University
Downloads 13 (1,518,554)

Abstract:

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Flight Delay Prediction, Dynamic Gating, Mixture-of-Experts