UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Real-time delay estimation based on delay history in many-server service systems with time-varying arrivals

Ibrahim, R; Whitt, W; (2011) Real-time delay estimation based on delay history in many-server service systems with time-varying arrivals. Production and Operations Management , 20 (5) pp. 654-667. 10.1111/j.1937-5956.2010.01196.x.

Full text not available from this repository.

Abstract

Motivated by interest in making delay announcements in service systems, we study real-time delay estimators in many-server service systems, both with and without customer abandonment. Our main contribution here is to consider the realistic feature of time-varying arrival rates. We focus especially on delay estimators exploiting recent customer delay history. We show that time-varying arrival rates can introduce significant estimation bias in delay-history-based delay estimators when the system experiences alternating periods of overload and underload. We then introduce refined delay-history estimators that effectively cope with time-varying arrival rates together with non-exponential service-time and abandonment-time distributions, which are often observed in practice. We use computer simulation to verify that our proposed estimators outperform several natural alternatives. © 2010 Production and Operations Management Society.

Type: Article
Title: Real-time delay estimation based on delay history in many-server service systems with time-varying arrivals
DOI: 10.1111/j.1937-5956.2010.01196.x
UCL classification: UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
UCL > School of BEAMS > Faculty of Engineering Science > Management Science and Innovation
URI: http://discovery.ucl.ac.uk/id/eprint/1368867
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item