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Ger Koole
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- affiliation: Vrije Universiteit Amsterdam, The Netherlands
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2020 – today
- 2023
- [j50]René Bekker
, Michiel A. J. uit het Broek
, Ger Koole
:
Modeling COVID-19 hospital admissions and occupancy in the Netherlands. Eur. J. Oper. Res. 304(1): 207-218 (2023) - 2022
- [j49]Ger Koole
:
The slow-server problem with multiple slow servers. Queueing Syst. Theory Appl. 100(3-4): 469-471 (2022) - [i5]Luis Pedro Silvestrin, Harry van Zanten, Mark Hoogendoorn, Ger Koole:
Transfer-Learning Across Datasets with Different Input Dimensions: An Algorithm and Analysis for the Linear Regression Case. CoRR abs/2202.05069 (2022) - 2021
- [j48]Benjamin Legros
, Oualid Jouini, Ger Koole
:
Should We Wait Before Outsourcing? Analysis of a Revenue-Generating Blended Contact Center. Manuf. Serv. Oper. Manag. 23(5): 1118-1138 (2021) - [i4]Ger Koole, Siqiao Li:
A practice-oriented overview of call center workforce planning. CoRR abs/2101.10122 (2021) - [i3]Daniel Hopman, Ger Koole, Rob van der Mei:
A machine learning approach to itinerary-level booking prediction in competitive airline markets. CoRR abs/2103.08405 (2021) - [i2]Rik van Leeuwen, Ger Koole:
Data-Driven Market Segmentation in Hospitality Using Unsupervised Machine Learning. CoRR abs/2111.02848 (2021) - 2020
- [j47]Benjamin Legros
, Oualid Jouini, O. Zeynep Aksin, Ger Koole
:
Front-office multitasking between service encounters and back-office tasks. Eur. J. Oper. Res. 287(3): 946-963 (2020)
2010 – 2019
- 2019
- [c19]Dmitrii Erkin, Elenna R. Dugundji
, Ger Koole
, Joaquim A. S. Gromicho, Rob van der Mei:
Buffering locations in retail deliveries. ANT/EDI40 2019: 116-123 - [c18]Luis P. Silvestrin
, Mark Hoogendoorn, Ger Koole
:
A Comparative Study of State-of-the-Art Machine Learning Algorithms for Predictive Maintenance. SSCI 2019: 760-767 - [c17]Siqiao Li
, Ger Koole
, Oualid Jouini:
A Simple Solution for Optimizing Weekly Agent Scheduling in a Multi-Skill Multi-Channel Contact Center. WSC 2019: 3657-3668 - 2018
- [j46]Benjamin Legros
, Oualid Jouini
, Ger Koole
:
A Uniformization Approach for the Dynamic Control of Queueing Systems with Abandonments. Oper. Res. 66(1): 200-209 (2018) - 2016
- [j45]Benjamin Legros
, Oualid Jouini
, Ger Koole
:
Optimal scheduling in call centers with a callback option. Perform. Evaluation 95: 1-40 (2016) - 2015
- [j44]D. D. Sierag, G. M. Koole
, Robert D. van der Mei, J. I. van der Rest, Bert Zwart:
Revenue management under customer choice behaviour with cancellations and overbooking. Eur. J. Oper. Res. 246(1): 170-185 (2015) - [j43]Sihan Ding, Ger Koole, Robert D. van der Mei:
On the estimation of the true demand in call centers with redials and reconnects. Eur. J. Oper. Res. 246(1): 250-262 (2015) - [j42]Karim Ghanes, Mathias Wargon, Oualid Jouini, Zied Jemaï, Agapitos Diakogiannis, Romain Hellmann, Valérie Thomas, Ger Koole
:
Simulation-based optimization of staffing levels in an emergency department. Simul. 91(10): 942-953 (2015) - 2014
- [j41]Wyean Chan, Ger Koole
, Pierre L'Ecuyer
:
Dynamic Call Center Routing Policies Using Call Waiting and Agent Idle Times. Manuf. Serv. Oper. Manag. 16(4): 544-560 (2014) - [c16]Karim Ghanes, Oualid Jouini, Zied Jemaï, Mathias Wargon, Romain Hellmann, Valérie Thomas, Ger Koole:
A comprehensive simulation modeling of an emergency department: a case study for simulation optimization of staffing levels. WSC 2014: 1421-1432 - 2013
- [b1]Ger Koole:
Call Center Optimization. MG Books 2013, ISBN 978-9-08-201790-8, pp. I-VI, 1-146 - [c15]Sihan Ding, Ger Koole, Rob van der Mei:
A method for estimation of redial and reconnect probabilities in call centers. WSC 2013: 181-192 - 2012
- [j40]Ger Koole
, Bo Friis Nielsen
, Thomas Bang Nielsen:
First in Line Waiting Times as a Tool for Analysing Queueing Systems. Oper. Res. 60(5): 1258-1266 (2012) - [j39]Alex Roubos, Ger Koole
, Raik Stolletz
:
Service-Level Variability of Inbound Call Centers. Manuf. Serv. Oper. Manag. 14(3): 402-413 (2012) - [j38]Shuangqing Liao, Ger Koole
, Christian van Delft, Oualid Jouini:
Staffing a call center with uncertain non-stationary arrival rate and flexibility. OR Spectr. 34(3): 691-721 (2012) - [c14]Paulien Koeleman, Ger Koole:
Appointment scheduling using optimisation via simulation. WSC 2012: 22:1-22:5 - 2011
- [j37]Ger Koole
, Auke Pot:
TECHNICAL NOTE - A Note on Profit Maximization and Monotonicity for Inbound Call Centers. Oper. Res. 59(5): 1304-1308 (2011) - [j36]Douglas G. Down, Ger Koole
, Mark E. Lewis:
Dynamic control of a single-server system with abandonments. Queueing Syst. Theory Appl. 67(1): 63-90 (2011) - [j35]René Bekker, Ger Koole
, Bo Friis Nielsen
, Thomas Bang Nielsen:
Queues with waiting time dependent service. Queueing Syst. Theory Appl. 68(1): 61-78 (2011) - 2010
- [j34]Arnoud M. de Bruin, René Bekker, Lillian van Zanten, Ger Koole
:
Dimensioning hospital wards using the Erlang loss model. Ann. Oper. Res. 178(1): 23-43 (2010) - [j33]Marco Bijvank
, Ger Koole
, Iris F. A. Vis:
Optimising a general repair kit problem with a service constraint. Eur. J. Oper. Res. 204(1): 76-85 (2010) - [j32]Oualid Jouini, Auke Pot, Ger Koole
, Yves Dallery:
Online scheduling policies for multiclass call centers with impatient customers. Eur. J. Oper. Res. 207(1): 258-268 (2010)
2000 – 2009
- 2009
- [j31]Menno Dobber, Robert D. van der Mei, Ger Koole
:
Dynamic Load Balancing and Job Replication in a Global-Scale Grid Environment: A Comparison. IEEE Trans. Parallel Distributed Syst. 20(2): 207-218 (2009) - [i1]Rob van der Mei, Kevin Pak, Maarten Soomer, Ger Koole:
Revenue Management in the Parking Industry: New Business Opportunities. ERCIM News 2009(78) (2009) - 2008
- [j30]Ger Koole:
Introduction to the Special Issue on Call Center Management. Manag. Sci. 54(2): 237 (2008) - [j29]Sandjai Bhulai
, Ger Koole
, Auke Pot:
Simple Methods for Shift Scheduling in Multiskill Call Centers. Manuf. Serv. Oper. Manag. 10(3): 411-420 (2008) - [j28]Auke Pot, Sandjai Bhulai
, Ger Koole
:
A Simple Staffing Method for Multiskill Call Centers. Manuf. Serv. Oper. Manag. 10(3): 421-428 (2008) - [j27]Ger Koole, Rhonda Righter:
Resource allocation in grid computing. J. Sched. 11(3): 163-173 (2008) - [c13]Ran Yang, Robert D. van der Mei, Dennis Roubos, Frank J. Seinstra, Ger Koole:
On the Optimization of Resource Utilization in Distributed Multimedia Applications. CCGRID 2008: 358-365 - [c12]Ran Yang, Robert D. van der Mei, Dennis Roubos, Frank J. Seinstra, Ger Koole, Henri E. Bal:
Modeling "Just-in-Time" Communication in Distributed Real-Time Multimedia Applications. CCGRID 2008: 518-525 - 2007
- [j26]Menno Dobber, Robert D. van der Mei, Ger Koole
:
A prediction method for job runtimes on shared processors: Survey, statistical analysis and new avenues. Perform. Evaluation 64(7-8): 755-781 (2007) - 2006
- [j25]Ger Koole
, Auke Pot:
Workload minimization in re-entrant lines. Eur. J. Oper. Res. 174(1): 216-233 (2006) - [j24]Ger Koole
:
Monotonicity in Markov Reward and Decision Chains: Theory and Applications. Found. Trends Stoch. Syst. 1(1): 1-76 (2006) - [j23]Geert Jan Franx, Ger Koole
, Auke Pot:
Approximating multi-skill blocking systems by HyperExponential Decomposition. Perform. Evaluation 63(8): 799-824 (2006) - [c11]Menno Dobber, Robert D. van der Mei, Ger Koole:
Statistical Properties of Task Running Times in a Global-Scale Grid Environment. CCGRID 2006: 150-153 - [c10]Menno Dobber, Robert D. van der Mei, Ger Koole:
Effective Prediction of Job Processing Times in a Large-Scale Grid Environment. HPDC 2006: 359-360 - 2005
- [j22]Lodewijk C. M. Kallenberg, Ger Koole, Flos Spieksma:
Special issue in honor of Arie Hordijk Editorial introduction. Math. Methods Oper. Res. 62(3): 347-349 (2005) - [j21]Robin Groenevelt, Philippe Nain, Ger Koole
:
The message delay in mobile ad hoc networks. Perform. Evaluation 62(1-4): 210-228 (2005) - [c9]Menno Dobber, Ger Koole, Robert D. van der Mei:
Dynamic load balancing experiments in a grid. CCGRID 2005: 1063-1070 - [c8]Robin Groenevelt, Philippe Nain, Ger Koole
:
Message delay in MANET. SIGMETRICS 2005: 412-413 - [c7]Ger Koole, Auke Pot:
Approximate dynamic programming in multi-skill call centers. WSC 2005: 576-583 - 2004
- [j20]Tania Jiménez, Ger Koole
:
Scaling and comparison of fluid limits of queues applied to call centers with time-varying parameters. OR Spectr. 26(3): 413-422 (2004) - [j19]Ger Koole
, Philippe Nain:
An Explicit Solution for the Value Function of a Priority Queue. Queueing Syst. Theory Appl. 47(3): 251-282 (2004) - [c6]Menno Dobber, Ger Koole, Robert D. van der Mei:
Dynamic Load Balancing for a Grid Application. HiPC 2004: 342-352 - [c5]Ger Koole:
Performance Analysis and Optimization in Customer Contact Centers. QEST 2004: 2-5 - 2003
- [j18]Noah Gans, Ger Koole
, Avishai Mandelbaum:
Telephone Call Centers: Tutorial, Review, and Research Prospects. Manuf. Serv. Oper. Manag. 5(2): 79-141 (2003) - [j17]Sandjai Bhulai
, Ger Koole
:
A queueing model for call blending in call centers. IEEE Trans. Autom. Control. 48(8): 1434-1438 (2003) - [c4]Ger Koole, Auke Pot, Jerome Talim:
Customer relations management: call center operations: routing heuristics for multi-skill call centers. WSC 2003: 1813-1816 - 2002
- [j16]Ger Koole
, Avishai Mandelbaum:
Queueing Models of Call Centers: An Introduction. Ann. Oper. Res. 113(1-4): 41-59 (2002) - [j15]Robin Groenevelt, Ger Koole
, Philippe Nain:
On the bias vector of a two-class preemptive priority queue. Math. Methods Oper. Res. 55(1): 107-120 (2002) - 2001
- [j14]Ger Koole, Zhen Liu, Rhonda Righter:
Optimal Transmission Policies for Noisy Channels. Oper. Res. 49(6): 892-899 (2001) - [j13]Eitan Altman, Tania Jiménez, Ger Koole:
On optimal call admission control in resource-sharing system. IEEE Trans. Commun. 49(9): 1659-1668 (2001) - 2000
- [j12]Ger Koole
:
Stochastic scheduling with event-based dynamic programming. Math. Methods Oper. Res. 51(2): 249-261 (2000) - [j11]Gerard Hooghiemstra, Ger Koole
:
On the convergence of the power series algorithm. Perform. Evaluation 42(1): 21-39 (2000) - [j10]Ger Koole
, Philippe Nain:
On the value function of a priority queue with an application to a controlled polling model. Queueing Syst. Theory Appl. 34(1-4): 199-214 (2000) - [j9]Sandjai Bhulai
, Ger Koole
:
On the value of learning for Bernoulli bandits with unknown parameters. IEEE Trans. Autom. Control. 45(11): 2135-2140 (2000) - [c3]Sandjai Bhulai, Ger Koole:
On the value of learning for Bernoulli bandits with unknown parameters. CDC 2000: 736-741 - [c2]Sandjai Bhulai, Ger Koole:
Scheduling time-constrained jobs in the presence of background traffic. CDC 2000: 1421-1426
1990 – 1999
- 1999
- [j8]Ger Koole
:
On the static assignment to parallel servers. IEEE Trans. Autom. Control. 44(8): 1588-1592 (1999) - 1998
- [j7]Ger Koole, Rhonda Righter:
Optimal control of tandem reentrant queues. Queueing Syst. Theory Appl. 28(4): 337-347 (1998) - [j6]Ger Koole:
Structural results for the control of queueing systems using event-based dynamic programming. Queueing Syst. Theory Appl. 30(3-4): 323-339 (1998) - 1997
- [j5]Ger Koole:
On the Use of the Power Series Algorithm for General Markov Processes, with an Application to a Petri Net. INFORMS J. Comput. 9(1): 51-56 (1997) - [j4]Ger Koole, Olaf Passchier:
Optimal control in light traffic Markov decision processes. Math. Methods Oper. Res. 45(1): 63-79 (1997) - [j3]Ger Koole:
Asigning a Single Server to Inhomogeneous Queues with Switching Costs. Theor. Comput. Sci. 182(1-2): 203-216 (1997) - 1996
- [j2]Ger Koole, Martin Vrijenhoek:
Scheduling a repairman in a finite source system. Math. Methods Oper. Res. 44(3): 333-344 (1996) - [j1]Ger Koole:
On the Pathwise Optimal Bernoulli Routing Policy for Homogeneous Parallel Servers. Math. Oper. Res. 21(2): 469-476 (1996) - 1995
- [c1]Onno J. Boxma, Ger Koole, Isi Mitrani:
A Two-Queue Polling Model with a Threshold Service Policy. MASCOTS 1995: 84-88
Coauthor Index
aka: Rob van der Mei
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