Ger Koole

According to our database, Ger Koole authored at least 74 papers between 1995 and 2023.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2023

Modeling COVID-19 hospital admissions and occupancy in the Netherlands.

René Bekker, Michiel A. J. uit het Broek, Ger Koole

Eur. J. Oper. Res., 2023

2022

The slow-server problem with multiple slow servers.

Ger Koole

Queueing Syst. Theory Appl., 2022

Transfer-Learning Across Datasets with Different Input Dimensions: An Algorithm and Analysis for the Linear Regression Case.

Luis Pedro Silvestrin, Harry van Zanten, Mark Hoogendoorn, Ger Koole

CoRR, 2022

2021

Should We Wait Before Outsourcing? Analysis of a Revenue-Generating Blended Contact Center.

Benjamin Legros, Oualid Jouini, Ger Koole

Manuf. Serv. Oper. Manag., 2021

Data-Driven Market Segmentation in Hospitality Using Unsupervised Machine Learning.

Rik van Leeuwen, Ger Koole

CoRR, 2021

A machine learning approach to itinerary-level booking prediction in competitive airline markets.

Daniel Hopman, Ger Koole, Rob van der Mei

CoRR, 2021

A practice-oriented overview of call center workforce planning.

Ger Koole, Siqiao Li

CoRR, 2021

2020

Front-office multitasking between service encounters and back-office tasks.

Benjamin Legros, Oualid Jouini, O. Zeynep Aksin, Ger Koole

Eur. J. Oper. Res., 2020

2019

A Simple Solution for Optimizing Weekly Agent Scheduling in a Multi-Skill Multi-Channel Contact Center.

Siqiao Li, Ger Koole, Oualid Jouini

Proceedings of the 2019 Winter Simulation Conference, 2019

A Comparative Study of State-of-the-Art Machine Learning Algorithms for Predictive Maintenance.

Luis P. Silvestrin, Mark Hoogendoorn, Ger Koole

Proceedings of the IEEE Symposium Series on Computational Intelligence, 2019

Buffering locations in retail deliveries.

Dmitrii Erkin, Elenna R. Dugundji, Ger Koole, Joaquim A. S. Gromicho, Rob van der Mei

Proceedings of the 10th International Conference on Ambient Systems, Networks and Technologies (ANT 2019) / The 2nd International Conference on Emerging Data and Industry 4.0 (EDI40 2019) / Affiliated Workshops, April 29, 2019

2018

A Uniformization Approach for the Dynamic Control of Queueing Systems with Abandonments.

Benjamin Legros, Oualid Jouini, Ger Koole

Oper. Res., 2018

2016

Optimal scheduling in call centers with a callback option.

Benjamin Legros, Oualid Jouini, Ger Koole

Perform. Evaluation, 2016

2015

Simulation-based optimization of staffing levels in an emergency department.

Karim Ghanes, Mathias Wargon, Oualid Jouini, Zied Jemaï, Agapitos Diakogiannis, Romain Hellmann, Valérie Thomas, Ger Koole

Simul., 2015

Revenue management under customer choice behaviour with cancellations and overbooking.

D. D. Sierag, G. M. Koole, Robert D. van der Mei, J. I. van der Rest, Bert Zwart

Eur. J. Oper. Res., 2015

On the estimation of the true demand in call centers with redials and reconnects.

Sihan Ding, Ger Koole, Robert D. van der Mei

Eur. J. Oper. Res., 2015

2014

Dynamic Call Center Routing Policies Using Call Waiting and Agent Idle Times.

Wyean Chan, Ger Koole, Pierre L'Ecuyer

Manuf. Serv. Oper. Manag., 2014

A comprehensive simulation modeling of an emergency department: a case study for simulation optimization of staffing levels.

Karim Ghanes, Oualid Jouini, Zied Jemaï, Mathias Wargon, Romain Hellmann, Valérie Thomas, Ger Koole

Proceedings of the 2014 Winter Simulation Conference, 2014

2013

A method for estimation of redial and reconnect probabilities in call centers.

Sihan Ding, Ger Koole, Rob van der Mei

Proceedings of the Winter Simulations Conference: Simulation Making Decisions in a Complex World, 2013

Call Center Optimization.

Ger Koole

MG Books, ISBN: 978-9-08-201790-8, 2013

2012

Staffing a call center with uncertain non-stationary arrival rate and flexibility.

Shuangqing Liao, Ger Koole, Christian van Delft, Oualid Jouini

OR Spectr., 2012

Service-Level Variability of Inbound Call Centers.

Alex Roubos, Ger Koole, Raik Stolletz

Manuf. Serv. Oper. Manag., 2012

First in Line Waiting Times as a Tool for Analysing Queueing Systems.

Ger Koole, Bo Friis Nielsen, Thomas Bang Nielsen

Oper. Res., 2012

Appointment scheduling using optimisation via simulation.

Paulien Koeleman, Ger Koole

Proceedings of the Winter Simulation Conference, 2012

2011

Dynamic control of a single-server system with abandonments.

Douglas G. Down, Ger Koole, Mark E. Lewis

Queueing Syst. Theory Appl., 2011

Queues with waiting time dependent service.

René Bekker, Ger Koole, Bo Friis Nielsen, Thomas Bang Nielsen

Queueing Syst. Theory Appl., 2011

TECHNICAL NOTE - A Note on Profit Maximization and Monotonicity for Inbound Call Centers.

Ger Koole, Auke Pot

Oper. Res., 2011

2010

Online scheduling policies for multiclass call centers with impatient customers.

Oualid Jouini, Auke Pot, Ger Koole, Yves Dallery

Eur. J. Oper. Res., 2010

Optimising a general repair kit problem with a service constraint.

Marco Bijvank, Ger Koole, Iris F. A. Vis

Eur. J. Oper. Res., 2010

Dimensioning hospital wards using the Erlang loss model.

Arnoud M. de Bruin, René Bekker, Lillian van Zanten, Ger Koole

Ann. Oper. Res., 2010

2009

Dynamic Load Balancing and Job Replication in a Global-Scale Grid Environment: A Comparison.

Menno Dobber, Robert D. van der Mei, Ger Koole

IEEE Trans. Parallel Distributed Syst., 2009

Revenue Management in the Parking Industry: New Business Opportunities.

Rob van der Mei, Kevin Pak, Maarten Soomer, Ger Koole

ERCIM News, 2009

2008

Resource allocation in grid computing.

Ger Koole, Rhonda Righter

J. Sched., 2008

A Simple Staffing Method for Multiskill Call Centers.

Auke Pot, Sandjai Bhulai, Ger Koole

Manuf. Serv. Oper. Manag., 2008

Simple Methods for Shift Scheduling in Multiskill Call Centers.

Sandjai Bhulai, Ger Koole, Auke Pot

Manuf. Serv. Oper. Manag., 2008

Introduction to the Special Issue on Call Center Management.

Ger Koole

Manag. Sci., 2008

Modeling "Just-in-Time" Communication in Distributed Real-Time Multimedia Applications.

Ran Yang, Robert D. van der Mei, Dennis Roubos, Frank J. Seinstra, Ger Koole, Henri E. Bal

Proceedings of the 8th IEEE International Symposium on Cluster Computing and the Grid (CCGrid 2008), 2008

On the Optimization of Resource Utilization in Distributed Multimedia Applications.

Ran Yang, Robert D. van der Mei, Dennis Roubos, Frank J. Seinstra, Ger Koole

Proceedings of the 8th IEEE International Symposium on Cluster Computing and the Grid (CCGrid 2008), 2008

2007

A prediction method for job runtimes on shared processors: Survey, statistical analysis and new avenues.

Menno Dobber, Robert D. van der Mei, Ger Koole

Perform. Evaluation, 2007

2006

Approximating multi-skill blocking systems by HyperExponential Decomposition.

Geert Jan Franx, Ger Koole, Auke Pot

Perform. Evaluation, 2006

Monotonicity in Markov Reward and Decision Chains: Theory and Applications.

Ger Koole

Found. Trends Stoch. Syst., 2006

Workload minimization in re-entrant lines.

Ger Koole, Auke Pot

Eur. J. Oper. Res., 2006

Effective Prediction of Job Processing Times in a Large-Scale Grid Environment.

Menno Dobber, Robert D. van der Mei, Ger Koole

Proceedings of the 15th IEEE International Symposium on High Performance Distributed Computing, 2006

Statistical Properties of Task Running Times in a Global-Scale Grid Environment.

Menno Dobber, Robert D. van der Mei, Ger Koole

Proceedings of the Sixth IEEE International Symposium on Cluster Computing and the Grid (CCGrid 2006), 2006

2005

The message delay in mobile ad hoc networks.

Robin Groenevelt, Philippe Nain, Ger Koole

Perform. Evaluation, 2005

Special issue in honor of Arie Hordijk Editorial introduction.

Lodewijk C. M. Kallenberg, Ger Koole, Flos Spieksma

Math. Methods Oper. Res., 2005

Approximate dynamic programming in multi-skill call centers.

Ger Koole, Auke Pot

Proceedings of the 37th Winter Simulation Conference, Orlando, FL, USA, December 4-7, 2005, 2005

Message delay in MANET.

Robin Groenevelt, Philippe Nain, Ger Koole

Proceedings of the International Conference on Measurements and Modeling of Computer Systems, 2005

Dynamic load balancing experiments in a grid.

Menno Dobber, Ger Koole, Robert D. van der Mei

Proceedings of the 5th International Symposium on Cluster Computing and the Grid (CCGrid 2005), 2005

2004

An Explicit Solution for the Value Function of a Priority Queue.

Ger Koole, Philippe Nain

Queueing Syst. Theory Appl., 2004

Scaling and comparison of fluid limits of queues applied to call centers with time-varying parameters.

Tania Jiménez, Ger Koole

OR Spectr., 2004

Performance Analysis and Optimization in Customer Contact Centers.

Ger Koole

Proceedings of the 1st International Conference on Quantitative Evaluation of Systems (QEST 2004), 2004

Dynamic Load Balancing for a Grid Application.

Menno Dobber, Ger Koole, Robert D. van der Mei

Proceedings of the High Performance Computing, 2004

2003

A queueing model for call blending in call centers.

Sandjai Bhulai, Ger Koole

IEEE Trans. Autom. Control., 2003

Telephone Call Centers: Tutorial, Review, and Research Prospects.

Noah Gans, Ger Koole, Avishai Mandelbaum

Manuf. Serv. Oper. Manag., 2003

Customer relations management: call center operations: routing heuristics for multi-skill call centers.

Ger Koole, Auke Pot, Jerome Talim

Proceedings of the 35th Winter Simulation Conference: Driving Innovation, 2003

2002

On the bias vector of a two-class preemptive priority queue.

Robin Groenevelt, Ger Koole, Philippe Nain

Math. Methods Oper. Res., 2002

Queueing Models of Call Centers: An Introduction.

Ger Koole, Avishai Mandelbaum

Ann. Oper. Res., 2002

2001

On optimal call admission control in resource-sharing system.

Eitan Altman, Tania Jiménez, Ger Koole

IEEE Trans. Commun., 2001

Optimal Transmission Policies for Noisy Channels.

Ger Koole, Zhen Liu, Rhonda Righter

Oper. Res., 2001

2000

On the value of learning for Bernoulli bandits with unknown parameters.

Sandjai Bhulai, Ger Koole

IEEE Trans. Autom. Control., 2000

On the value function of a priority queue with an application to a controlled polling model.

Ger Koole, Philippe Nain

Queueing Syst. Theory Appl., 2000

On the convergence of the power series algorithm.

Gerard Hooghiemstra, Ger Koole

Perform. Evaluation, 2000

Stochastic scheduling with event-based dynamic programming.

Ger Koole

Math. Methods Oper. Res., 2000

Scheduling time-constrained jobs in the presence of background traffic.

Sandjai Bhulai, Ger Koole

Proceedings of the 39th IEEE Conference on Decision and Control, 2000

1999

On the static assignment to parallel servers.

Ger Koole

IEEE Trans. Autom. Control., 1999

1998

Optimal control of tandem reentrant queues.

Ger Koole, Rhonda Righter

Queueing Syst. Theory Appl., 1998

Structural results for the control of queueing systems using event-based dynamic programming.

Ger Koole

Queueing Syst. Theory Appl., 1998

1997

Asigning a Single Server to Inhomogeneous Queues with Switching Costs.

Ger Koole

Theor. Comput. Sci., 1997

Optimal control in light traffic Markov decision processes.

Ger Koole, Olaf Passchier

Math. Methods Oper. Res., 1997

On the Use of the Power Series Algorithm for General Markov Processes, with an Application to a Petri Net.

Ger Koole

INFORMS J. Comput., 1997

1996

On the Pathwise Optimal Bernoulli Routing Policy for Homogeneous Parallel Servers.

Ger Koole

Math. Oper. Res., 1996

Scheduling a repairman in a finite source system.

Ger Koole, Martin Vrijenhoek

Math. Methods Oper. Res., 1996

1995

A Two-Queue Polling Model with a Threshold Service Policy.

Onno J. Boxma, Ger Koole, Isi Mitrani

Proceedings of the MASCOTS '95, 1995