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Members of international organizations often meet in person at a common location for discussions. There is frequently disagreement over the place and time of the meeting due to the different travel efforts of the members. They usually…

Physics and Society · Physics 2020-05-19 Peter Hillmann , Bastian Kühnel , Tobias Uhlig , Gabi Dreo Rodosek , Oliver Rose

When traveling to an unfamiliar city for holidays, tourists often rely on guidebooks, travel websites, or recommendation systems to plan their daily itineraries and explore popular points of interest (POIs). However, these approaches may…

Information Retrieval · Computer Science 2023-11-21 Ngai Lam Ho , Roy Ka-Wei Lee , Kwan Hui Lim

Motivated by the change in mobility patterns, we present a scheduling approach for a vehicle-sharing problem, considering several alternative modes of transport, from a company viewpoint with centralized planning. We consider…

Other Computer Science · Computer Science 2022-09-29 Miriam Enzi , Sophie N. Parragh , David Pisinger

Smart city has been consider the wave of the future and the route recommendation in networks is a fundamental problem in it. Most existing approaches for the shortest route problem consider that there is only one kind of cost in networks.…

Databases · Computer Science 2020-04-28 Yajun Yang , Hang Zhang , Hong Gao , Qinghua Hu , Xin Wang

There is a rapidly growing demand for itinerary planning in tourism but this task remains complex and difficult, especially when considering the need to optimize for queuing time and crowd levels for multiple users. This difficulty is…

Artificial Intelligence · Computer Science 2020-06-11 Junhua Liu , Kristin L. Wood , Kwan Hui Lim

We study the problem of planning Pareto-optimal journeys in public transit networks. Most existing algorithms and speed-up techniques work by computing subjourneys to intermediary stops until the destination is reached. In contrast, the…

Data Structures and Algorithms · Computer Science 2016-09-16 Sascha Witt

Fare planning is one among several steps in public transport planning. Fares are relevant for the covering of costs of the public transport operator, but also affect the ridership and the passenger satisfaction. A fare structure is the…

Optimization and Control · Mathematics 2025-02-13 Anita Schöbel , Reena Urban

Three essential criteria are important for activity planning, including: (1) finding a group of attendees familiar with the initiator, (2) ensuring each attendee in the group to have tight social relations with most of the members in the…

Social and Information Networks · Computer Science 2011-04-19 De-Nian Yang , Yi-Ling Chen , Wang-Chien Lee , Ming-Syan Chen

Next point of interest (POI) recommendation primarily predicts future activities based on users' past check-in data and current status, providing significant value to users and service providers. We observed that the popular check-in times…

Information Retrieval · Computer Science 2025-07-22 Pei-Xuan Li , Wei-Yun Liang , Fandel Lin , Hsun-Ping Hsieh

Platooning represents an advanced driving technology designed to assist drivers in traffic convoys of varying lengths, enhancing road safety, reducing driver fatigue, and improving fuel efficiency. Sophisticated automated driving assistance…

Emerging Technologies · Computer Science 2025-07-22 Akif Adas , Stefano Arrigoni , Mattia Brambilla , Monica Barbara Nicoli , Edoardo Sabbioni

We study a joint routing-assignment optimization problem in which a set of items must be paired one-to-one with a set of placeholders while simultaneously determining a Hamiltonian cycle that visits every node exactly once. Both the…

Data Structures and Algorithms · Computer Science 2025-10-29 Qilong Yuan

In this paper we study a particular aspect of the urban community policing: routine patrol route planning. We seek routes that guarantee visibility, as this has a sizable impact on the community perceived safety, allowing quick emergency…

Artificial Intelligence · Computer Science 2016-09-16 Washington Alves de Oliveira , Antonio Carlos Moretti , Ednei Felix Reis

Devising an optimal strategy for navigation in a partially observable environment is one of the key objectives in AI. One of the problem in this context is the Canadian Traveler Problem (CTP). CTP is a navigation problem where an agent is…

Artificial Intelligence · Computer Science 2017-02-24 Doron Zarchy

Nowadays large amounts of GPS trajectory data is being continuously collected by GPS-enabled devices such as vehicles navigation systems and mobile phones. GPS trajectory data is useful for applications such as traffic management, location…

Artificial Intelligence · Computer Science 2016-05-18 Seyed Morteza Mousavi , Aaron Harwood , Shanika Karunasekera , Mojtaba Maghrebi

Although large language models have enhanced automated travel planning abilities, current systems remain misaligned with real-world scenarios. First, they assume users provide explicit queries, while in reality requirements are often…

Artificial Intelligence · Computer Science 2025-08-22 Bin Deng , Yizhe Feng , Zeming Liu , Qing Wei , Xiangrong Zhu , Shuai Chen , Yuanfang Guo , Yunhong Wang

Large-scale itinerary planning is a variant of the traveling salesman problem, aiming to determine an optimal path that maximizes the collected points of interest (POIs) scores while minimizing travel time and cost, subject to travel…

Artificial Intelligence · Computer Science 2025-06-16 Ziyu Zhang , Peilan Xu , Yuetong Sun , Yuhui Shi , Wenjian Luo

This paper addresses a new variant of the multi-trip single vehicle routing problem where the nodes are related to each other through AND-type precedence constraints. The problem aims at determining a sequence of trips to visit all the…

Optimization and Control · Mathematics 2021-06-04 Mina Roohnavazfar , Seyed Hamid Reza Pasandideh

With the rapid growth of Location-Based Social Networks, personalized Points of Interest (POIs) recommendation has become a critical task to help users explore their surroundings. Due to the scarcity of check-in data, the availability of…

Information Retrieval · Computer Science 2019-09-17 Hossein A. Rahmani , Mohammad Aliannejadi , Sajad Ahmadian , Mitra Baratchi , Mohsen Afsharchi , Fabio Crestani

A well-crafted police patrol route design is vital in providing community safety and security in the society. Previous works have largely focused on predicting crime events with historical crime data. The usage of large-scale mobility data…

Social and Information Networks · Computer Science 2024-10-30 Shakila Khan Rumi , Kyle K. Qin , Flora D. Salim

Searching for optimal ways in a network is an important task in multiple application areas such as social networks, co-citation graphs or road networks. In the majority of applications, each edge in a network is associated with a certain…

Social and Information Networks · Computer Science 2011-05-06 Franz Graf , Hans-Peter Kriegel , Matthias Schubert