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Crew Pairing Optimization aims at generating a set of flight sequences (crew pairings), covering all flights in an airline's flight schedule, at minimum cost, while satisfying several legality constraints. CPO is critically important for…

Mathematical Software · Computer Science 2020-11-20 Divyam Aggarwal , Dhish Kumar Saxena , Thomas Bäck , Michael Emmerich

Crew Pairing Optimization (CPO) is critical for an airlines' business viability, given that the crew operating cost is second only to the fuel cost. CPO aims at generating a set of flight sequences (crew pairings) to cover all scheduled…

Optimization and Control · Mathematics 2021-07-05 Divyam Aggarwal , Dhish Kumar Saxena , Saaju Pualose , Thomas Bäck , Michael Emmerich

Airline Crew Pairing Optimization (CPO) aims at generating a set of legal flight sequences (crew pairings), to cover an airline's flight schedule, at minimum cost. It is usually performed using Column Generation (CG), a mathematical…

Machine Learning · Computer Science 2020-05-19 Divyam Aggarwal , Yash Kumar Singh , Dhish Kumar Saxena

Airline crew pairing optimization problem (CPOP) aims to find a set of flight sequences (crew pairings) that cover all flights in an airline's highly constrained flight schedule at minimum cost. Since crew cost is second only to the fuel…

Neural and Evolutionary Computing · Computer Science 2023-05-30 Divyam Aggarwal , Dhish Kumar Saxena , Thomas Back , Michael Emmerich

The crew pairing problem (CPP) is generally modelled as a set partitioning problem where the flights have to be partitioned in pairings. A pairing is a sequence of flight legs separated by connection time and rest periods that starts and…

Artificial Intelligence · Computer Science 2020-10-02 Yassine Yaakoubi , François Soumis , Simon Lacoste-Julien

Aircraft routing and crew pairing problems aims at building the sequences of flight legs operated respectively by airplanes and by crews of an airline. Given their impact on airlines operating costs, both have been extensively studied for…

Optimization and Control · Mathematics 2019-10-10 Axel Parmentier , Frédéric Meunier

We present a case study of using machine learning classification algorithms to initialize a large-scale commercial solver (GENCOL) based on column generation in the context of the airline crew pairing problem, where small savings of as…

Machine Learning · Computer Science 2021-03-04 Yassine Yaakoubi , François Soumis , Simon Lacoste-Julien

In the existing literature on joint timing and frequency synchronization of orthogonal time frequency space modulation (OTFS), practically infeasible impulse pilot with large peak-to-average power ratio (PAPR) is deployed. Hence, in this…

Signal Processing · Electrical Eng. & Systems 2023-01-25 Mohsen Bayat , Sanoopkumar P. S. , Arman Farhang

The crew rostering problem (CRP) for pilots is a complex crew scheduling task assigning pairings, or sequences of flights starting and ending at the same airport, to pilots to create a monthly schedule. In this paper, we propose an…

Optimization and Control · Mathematics 2025-03-04 Philippe Racette , Frédéric Quesnel , Andrea Lodi , François Soumis

Drone applications continue to expand across various domains, with flocking offering enhanced cooperative capabilities but introducing significant challenges during initial formation. Existing flocking algorithms often struggle with…

Robotics · Computer Science 2025-12-24 Sujan Warnakulasooriya , Andreas Willig , Xiaobing Wu

Terahertz communication networks and intelligent reflecting surfaces exhibit significant potential in advancing wireless networks, particularly within the domain of aerial-based multi-access edge computing systems. These technologies enable…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-09-20 Jianqiu Wu , Zhongyi Yu , Jianxiong Guo , Zhiqing Tang , Tian Wang , Weijia Jia

Carrier frequency and timing synchronization play the fundamental roles in cooperative integrating communication and sensing (ISAC). To mitigate the effects of synchronization error, this paper develops a novel synchronization scheme in…

Signal Processing · Electrical Eng. & Systems 2025-02-03 Qihao Peng , Hong Ren , Zhendong Peng , Cunhua Pan , Maged Elkashlan , Dongming Wang , Jiangzhou Wang , Xiaohu You

Aircraft and crew are two major resources that ensure the smooth operations of airlines. However, with the anticipated growth in the aviation industry, the crew resource is predicted to be insufficient worldwide and has been one of the…

Optimization and Control · Mathematics 2022-09-29 Danni Wang , Siqi Guo , Wenshu Wang , Zhe Liang

In this paper, we propose time and frequency synchronization techniques for uplink multiuser OTFS (MU-OTFS) systems in high-mobility scenarios. This work focuses on accurately estimating and correcting timing offsets (TOs) and carrier…

Signal Processing · Electrical Eng. & Systems 2025-07-25 Mohsen Bayat , Sanoopkumar P. S. , Arman Farhang

We present two novel approaches to alter a flight network for introducing new flights while maximizing airline's profit. A key feature of the first approach is to adjust the aircraft cruise speed to compensate for the block times of the new…

Optimization and Control · Mathematics 2019-05-07 Ozge Safak , Alper Atamturk , Selim M. Akturk

Large Language Models (LLMs) are increasingly embedded in enterprise workflows, yet their performance remains highly sensitive to prompt design. Automatic Prompt Optimization (APO) seeks to mitigate this instability, but existing approaches…

Artificial Intelligence · Computer Science 2026-02-03 Wei Chen , Yanbin Fang , Shuran Fu , Fasheng Xu , Xuan Wei

The paper investigates the problem of path planning techniques for multi-copter uncrewed aerial vehicles (UAV) cooperation in a formation shape to examine surrounding surfaces. We first describe the problem as a joint objective cost for…

Robotics · Computer Science 2025-01-13 Van Truong Hoang

A novel method is presented and explored within the framework of Potts neural networks for solving optimization problems with a non-trivial topology, with the airline crew scheduling problem as a target application. The key ingredient to…

Disordered Systems and Neural Networks · Physics 2016-08-15 M. Lagerholm , C. Peterson , B. Söderberg

Horizontal collaboration between operators can save traffic operation costs, a concept that has been particularly validated in the logistics field. Due to the increasing transportation demand and the introduction of charging times for…

Optimization and Control · Mathematics 2024-09-04 Dan-Wen Bao , Jia-Yi Zhou , Di Kang , Zhuo Chen

Over-the-air computation (AirComp) is an efficient solution to enable federated learning on wireless channels. AirComp assumes that the wireless channels from different devices can be controlled, e.g., via transmitter-side phase…

Signal Processing · Electrical Eng. & Systems 2020-04-21 Daesung Yu , Seok-Hwan Park , Osvaldo Simeone , Shlomo Shamai
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