Publicaties
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Personnel rostering: models and algorithms for scheduling, rescheduling and ensuring robustness KU Leuven
Existing academic literature contains a significant number of publications which address personnel rostering problems. Providing a variety of combinatorial optimization techniques such as metaheuristics, integer linear programming and hybrid algorithms developed to approach such problems. Despite this progress in recent decades, a considerable number of institutions continue to prepare and organize their rosters manually. There are many ...
Within day rescheduling microsimulation combined with macrosimulated traffic Universiteit Hasselt
The concept of rescheduling is essential to activity-based modeling in order to calculate effects of both unexpected incidents and adaptation of individuals to traffic demand management measures. When collaboration between individuals is involved or timetable based public transportation modes are chosen, rescheduling becomes complex. This paper describes a new framework to investigate algorithms for rescheduling at a large scale. The framework ...
A genetic algorithm for the personnel task rescheduling problem with time preemption Universiteit Gent
In this paper, we study the personnel task rescheduling problem with time preemption. We assume a baseline task schedule has been composed some time in advance that has been rendered infeasible due to operational uncertainty. When restoring the schedule feasibility, the personnel planner takes several considerations into account encompassing the provided service level, resource stability, and task adherence. The latter stems from the possibility ...
A heuristic procedure for personnel task rescheduling with time-resource-quality trade-offs Universiteit Gent
In this paper, we consider the personnel task rescheduling problem with multiple discrete activity modes following time-resource-quality trade-offs. Due to operational uncertainty, announced baseline schedules may become infeasible and the need for rescheduling arises. To restore feasibility, changes are required to either the resource schedule or the service level impacting the task delivery. In this study, we explore in particular the recovery ...
Decision-Making under Time Pressure when Rescheduling Daily Activities Universiteit Hasselt
Generally during the execution of the daily schedule, there is a mismatch between the plan and the reality. Faced with unexpected events, which affect the schedule, individuals need to reschedule their decisions. In such situations, time is an important factor when making a rescheduling decision, as people feel time pressure because of the time threshold. Consequently, the rescheduling decision is made under the individual's own perceived time ...
Agent-based Dynamic Rescheduling of Daily Activities Universiteit Hasselt
When simulating individuals' daily plan, lots of unexpected events need to be considered, like traffic jam and weather changes. Therefore, there will be a mismatch between the original plan and the executed one. Faced with this situation, individuals need to adjust the rest of the activities to make a new schedule. This paper analyzes the causes of rescheduling, and establishes a new rescheduling model, combining strengths of existing ...
A two-phase Pareto front method for solving the bi-objective personnel task rescheduling problem Universiteit Gent
Application of reversible tracks in real-time train rescheduling during partial blockages KU Leuven
Reducing the propagation of train delays is typically a crucial objective in real-time railway disruption management. This paper introduces the concept of reversible tracks to provide more options to temporarily keep blocked trains waiting in a station area. A mixed integer linear program is constructed to optimize the response to partial blockages, also using these reversible tracks. Its main idea is to effectively utilize the buffer time in ...