Ger Koole

76 papers A* 1A 1B 5Misc 7Journal 56Unranked 5
YearRankTypeTitle / Venue / Authors
2025 J jnl
Call center data analysis and model validation.
Queueing Syst. Theory Appl.
Ger Koole, Siqiao Li, Sihan Ding
2025 J jnl
Churn management in hospitality.
J. Big Data
Rik van Leeuwen, Hieu Duc Do, Ger Koole
2023 J jnl
Modeling COVID-19 hospital admissions and occupancy in the Netherlands.
Eur. J. Oper. Res.
René Bekker, Michiel A. J. uit het Broek, Ger Koole
2022 J jnl
The slow-server problem with multiple slow servers.
Queueing Syst. Theory Appl.
Ger Koole
2022 J jnl
Transfer-Learning Across Datasets with Different Input Dimensions: An Algorithm and Analysis for the Linear Regression Case.
CoRR
Luis Pedro Silvestrin, Harry van Zanten, Mark Hoogendoorn, Ger Koole
2021 J jnl
A machine learning approach to itinerary-level booking prediction in competitive airline markets.
CoRR
Daniel Hopman, Ger Koole, Rob van der Mei
2021 J jnl
A practice-oriented overview of call center workforce planning.
CoRR
Ger Koole, Siqiao Li
2021 J jnl
Data-Driven Market Segmentation in Hospitality Using Unsupervised Machine Learning.
CoRR
Rik van Leeuwen, Ger Koole
2021 J jnl
Should We Wait Before Outsourcing? Analysis of a Revenue-Generating Blended Contact Center.
Manuf. Serv. Oper. Manag.
Benjamin Legros, Oualid Jouini, Ger Koole
2020 J jnl
Front-office multitasking between service encounters and back-office tasks.
Eur. J. Oper. Res.
Benjamin Legros, Oualid Jouini, O. Zeynep Aksin, Ger Koole
2019 — conf
A Comparative Study of State-of-the-Art Machine Learning Algorithms for Predictive Maintenance.
SSCI
Luis P. Silvestrin, Mark Hoogendoorn, Ger Koole
2019 Misc conf
A Simple Solution for Optimizing Weekly Agent Scheduling in a Multi-Skill Multi-Channel Contact Center.
WSC
Siqiao Li, Ger Koole, Oualid Jouini
2019 — conf
Buffering locations in retail deliveries.
ANT/EDI40
Dmitrii Erkin, Elenna R. Dugundji, Ger Koole, Joaquim A. S. Gromicho, Rob van der Mei
2018 J jnl
A Uniformization Approach for the Dynamic Control of Queueing Systems with Abandonments.
Oper. Res.
Benjamin Legros, Oualid Jouini, Ger Koole
2016 J jnl
Optimal scheduling in call centers with a callback option.
Perform. Evaluation
Benjamin Legros, Oualid Jouini, Ger Koole
2015 J jnl
On the estimation of the true demand in call centers with redials and reconnects.
Eur. J. Oper. Res.
Sihan Ding, Ger Koole, Robert D. van der Mei
2015 J jnl
Simulation-based optimization of staffing levels in an emergency department.
Simul.
Karim Ghanes, Mathias Wargon, Oualid Jouini, Zied Jemaï, Agapitos Diakogiannis, Romain Hellmann, Valérie Thomas, Ger Koole
2014 Misc conf
A comprehensive simulation modeling of an emergency department: a case study for simulation optimization of staffing levels.
WSC
Karim Ghanes, Oualid Jouini, Zied Jemaï, Mathias Wargon, Romain Hellmann, Valérie Thomas, Ger Koole
2014 J jnl
Dynamic Call Center Routing Policies Using Call Waiting and Agent Idle Times.
Manuf. Serv. Oper. Manag.
Wyean Chan, Ger Koole, Pierre L'Ecuyer
2013 Misc conf
A method for estimation of redial and reconnect probabilities in call centers.
WSC
Sihan Ding, Ger Koole, Rob van der Mei
2013 — book
Call Center Optimization.
Ger Koole
2012 Misc conf
Appointment scheduling using optimisation via simulation.
WSC
Paulien Koeleman, Ger Koole
2012 J jnl
First in Line Waiting Times as a Tool for Analysing Queueing Systems.
Oper. Res.
Ger Koole, Bo Friis Nielsen, Thomas Bang Nielsen
2012 J jnl
Service-Level Variability of Inbound Call Centers.
Manuf. Serv. Oper. Manag.
Alex Roubos, Ger Koole, Raik Stolletz
2012 J jnl
Staffing a call center with uncertain non-stationary arrival rate and flexibility.
OR Spectr.
Shuangqing Liao, Ger Koole, Christian van Delft, Oualid Jouini
2011 J jnl
Dynamic control of a single-server system with abandonments.
Queueing Syst. Theory Appl.
Douglas G. Down, Ger Koole, Mark E. Lewis
2011 J jnl
Queues with waiting time dependent service.
Queueing Syst. Theory Appl.
René Bekker, Ger Koole, Bo Friis Nielsen, Thomas Bang Nielsen
2011 J jnl
TECHNICAL NOTE - A Note on Profit Maximization and Monotonicity for Inbound Call Centers.
Oper. Res.
Ger Koole, Auke Pot
2010 J jnl
Dimensioning hospital wards using the Erlang loss model.
Ann. Oper. Res.
Arnoud M. de Bruin, René Bekker, Lillian van Zanten, Ger Koole
2010 J jnl
Online scheduling policies for multiclass call centers with impatient customers.
Eur. J. Oper. Res.
Oualid Jouini, Auke Pot, Ger Koole, Yves Dallery
2010 J jnl
Optimising a general repair kit problem with a service constraint.
Eur. J. Oper. Res.
Marco Bijvank, Ger Koole, Iris F. A. Vis
2009 J jnl
Dynamic Load Balancing and Job Replication in a Global-Scale Grid Environment: A Comparison.
IEEE Trans. Parallel Distributed Syst.
Menno Dobber, Robert D. van der Mei, Ger Koole
2009 J jnl
Revenue Management in the Parking Industry: New Business Opportunities.
ERCIM News
Rob van der Mei, Kevin Pak, Maarten Soomer, Ger Koole
2008 J jnl
A Simple Staffing Method for Multiskill Call Centers.
Manuf. Serv. Oper. Manag.
Auke Pot, Sandjai Bhulai, Ger Koole
2008 J jnl
Introduction to the Special Issue on Call Center Management.
Manag. Sci.
Ger Koole
2008 B conf
Modeling "Just-in-Time" Communication in Distributed Real-Time Multimedia Applications.
CCGRID
Ran Yang, Robert D. van der Mei, Dennis Roubos, Frank J. Seinstra, Ger Koole, Henri E. Bal
2008 B conf
On the Optimization of Resource Utilization in Distributed Multimedia Applications.
CCGRID
Ran Yang, Robert D. van der Mei, Dennis Roubos, Frank J. Seinstra, Ger Koole
2008 J jnl
Resource allocation in grid computing.
J. Sched.
Ger Koole, Rhonda Righter
2008 J jnl
Simple Methods for Shift Scheduling in Multiskill Call Centers.
Manuf. Serv. Oper. Manag.
Sandjai Bhulai, Ger Koole, Auke Pot
2007 J jnl
A prediction method for job runtimes on shared processors: Survey, statistical analysis and new avenues.
Perform. Evaluation
Menno Dobber, Robert D. van der Mei, Ger Koole
2006 J jnl
Approximating multi-skill blocking systems by HyperExponential Decomposition.
Perform. Evaluation
Geert Jan Franx, Ger Koole, Auke Pot
2006 A conf
Effective Prediction of Job Processing Times in a Large-Scale Grid Environment.
HPDC
Menno Dobber, Robert D. van der Mei, Ger Koole
2006 J jnl
Monotonicity in Markov Reward and Decision Chains: Theory and Applications.
Found. Trends Stoch. Syst.
Ger Koole
2006 B conf
Statistical Properties of Task Running Times in a Global-Scale Grid Environment.
CCGRID
Menno Dobber, Robert D. van der Mei, Ger Koole
2006 J jnl
Workload minimization in re-entrant lines.
Eur. J. Oper. Res.
Ger Koole, Auke Pot
2005 Misc conf
Approximate dynamic programming in multi-skill call centers.
WSC
Ger Koole, Auke Pot
2005 B conf
Dynamic load balancing experiments in a grid.
CCGRID
Menno Dobber, Ger Koole, Robert D. van der Mei
2005 A* conf
Message delay in MANET.
SIGMETRICS
Robin Groenevelt, Philippe Nain, Ger Koole
2005 J jnl
Special issue in honor of Arie Hordijk Editorial introduction.
Math. Methods Oper. Res.
Lodewijk C. M. Kallenberg, Ger Koole, Flos Spieksma
2005 J jnl
The message delay in mobile ad hoc networks.
Perform. Evaluation
Robin Groenevelt, Philippe Nain, Ger Koole
2004 J jnl
An Explicit Solution for the Value Function of a Priority Queue.
Queueing Syst. Theory Appl.
Ger Koole, Philippe Nain
2004 Misc conf
Dynamic Load Balancing for a Grid Application.
HiPC
Menno Dobber, Ger Koole, Robert D. van der Mei
2004 — conf
Performance Analysis and Optimization in Customer Contact Centers.
QEST
Ger Koole
2004 J jnl
Scaling and comparison of fluid limits of queues applied to call centers with time-varying parameters.
OR Spectr.
Tania Jiménez, Ger Koole
2003 J jnl
A queueing model for call blending in call centers.
IEEE Trans. Autom. Control.
Sandjai Bhulai, Ger Koole
2003 Misc conf
Customer relations management: call center operations: routing heuristics for multi-skill call centers.
WSC
Ger Koole, Auke Pot, Jerome Talim
2003 J jnl
Telephone Call Centers: Tutorial, Review, and Research Prospects.
Manuf. Serv. Oper. Manag.
Noah Gans, Ger Koole, Avishai Mandelbaum
2002 J jnl
On the bias vector of a two-class preemptive priority queue.
Math. Methods Oper. Res.
Robin Groenevelt, Ger Koole, Philippe Nain
2002 J jnl
Queueing Models of Call Centers: An Introduction.
Ann. Oper. Res.
Ger Koole, Avishai Mandelbaum
2001 J jnl
On optimal call admission control in resource-sharing system.
IEEE Trans. Commun.
Eitan Altman, Tania Jiménez, Ger Koole
2001 J jnl
Optimal Transmission Policies for Noisy Channels.
Oper. Res.
Ger Koole, Zhen Liu, Rhonda Righter
2000 J jnl
On the convergence of the power series algorithm.
Perform. Evaluation
Gerard Hooghiemstra, Ger Koole
2000 J jnl
On the value function of a priority queue with an application to a controlled polling model.
Queueing Syst. Theory Appl.
Ger Koole, Philippe Nain
2000 — conf
On the value of learning for Bernoulli bandits with unknown parameters.
CDC
Sandjai Bhulai, Ger Koole
2000 J jnl
On the value of learning for Bernoulli bandits with unknown parameters.
IEEE Trans. Autom. Control.
Sandjai Bhulai, Ger Koole
2000 — conf
Scheduling time-constrained jobs in the presence of background traffic.
CDC
Sandjai Bhulai, Ger Koole
2000 J jnl
Stochastic scheduling with event-based dynamic programming.
Math. Methods Oper. Res.
Ger Koole
1999 J jnl
On the static assignment to parallel servers.
IEEE Trans. Autom. Control.
Ger Koole
1998 J jnl
Optimal control of tandem reentrant queues.
Queueing Syst. Theory Appl.
Ger Koole, Rhonda Righter
1998 J jnl
Structural results for the control of queueing systems using event-based dynamic programming.
Queueing Syst. Theory Appl.
Ger Koole
1997 J jnl
Asigning a Single Server to Inhomogeneous Queues with Switching Costs.
Theor. Comput. Sci.
Ger Koole
1997 J jnl
On the Use of the Power Series Algorithm for General Markov Processes, with an Application to a Petri Net.
INFORMS J. Comput.
Ger Koole
1997 J jnl
Optimal control in light traffic Markov decision processes.
Math. Methods Oper. Res.
Ger Koole, Olaf Passchier
1996 J jnl
On the Pathwise Optimal Bernoulli Routing Policy for Homogeneous Parallel Servers.
Math. Oper. Res.
Ger Koole
1996 J jnl
Scheduling a repairman in a finite source system.
Math. Methods Oper. Res.
Ger Koole, Martin Vrijenhoek
1995 B conf
A Two-Queue Polling Model with a Threshold Service Policy.
MASCOTS
Onno J. Boxma, Ger Koole, Isi Mitrani