6 papers
Waiting time analysis in a finite-capacity multi-server systems with dynamic priorities, dynamically evolving customer types, and abandonment
M. Abdullah Khokhar, Malgorzata M. O'Reilly, Richard Turner
In many service systems, an estimation of customers' waiting times for the service can assist in decision making focused on enhancing the operational efficiency, improving the cust…
Level-dependent quasi-birth-and-death processes: Application to cost analysis of multi-server systems
M. Abdullah Khokhar, Malgorzata M. O'Reilly, Richard Turner
Analysing costs is crucial for optimising the operational efficiency and resource allocation in systems evolving under uncertainty. In this paper, we study the distribution of cost…
Sensitivity analysis of Stochastic Fluid Models: Stationary and transient quantities with applications
Anna Aksamit, Małgorzata M. O'Reilly, Zbigniew Palmowski
We establish results for the first sensitivity analysis of the stochastic fluid models (SFMs). We derive expressions for the sensitivity analysis of the key stationary and transien…
Early predicting of hospital admission using machine learning algorithms: Priority queues approach
Jakub Antczak, James Montgomery, Małgorzata O'Reilly +2
Emergency Department overcrowding is a critical issue that compromises patient safety and operational efficiency, necessitating accurate demand forecasting for effective resource a…
Markov Decision Process and Approximate Dynamic Programming for a Patient Assignment Scheduling problem
Malgorzata M. O'Reilly, Sebastian Krasnicki, James Montgomery +4
We study the Patient Assignment Scheduling (PAS) problem in a random environment that arises in the management of patient flow in the hospital systems, due to the stochastic nature…
A Stochastic Fluid Model Approach to the Stationary Distribution of the Maximum Priority Process
Hiska M. Boelema, Daan J. J. Dams, Malgorzata M. O'Reilly +2
In traditional priority queues, we assume that every customer upon arrival has a fixed, class-dependent priority, and that a customer may not commence service if a customer with a…