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Article: Statistical analysis of a telephone call center: A queueing-science perspective
Title | Statistical analysis of a telephone call center: A queueing-science perspective |
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Authors | |
Keywords | Lognormal distribution Multiserver queue Abandonment Queueing science Queueing theory Prediction of Poisson rates Arrivals Call center Censored data Erlang-A Erlang-C Human patience Inhomogeneous Poisson process Khintchine-Pollaczek formula |
Issue Date | 2005 |
Citation | Journal of the American Statistical Association, 2005, v. 100, n. 469, p. 36-50 How to Cite? |
Abstract | A call center is a service network in which agents provide telephone-based services. Customers who seek these services are delayed in tele-queues. This article summarizes an analysis of a unique record of call center operations. The data comprise a complete operational history of a small banking call center, call by call, over a full year. Taking the perspective of queueing theory, we decompose the service process into three fundamental components: arrivals, customer patience, and service durations. Each component involves different basic mathematical structures and requires a different style of statistical analysis. Some of the key empirical results are sketched, along with descriptions of the varied techniques required. Several statistical techniques are developed for analysis of the basic components. One of these techniques is a test that a point process is a Poisson process. Another involves estimation of the mean function in a nonparametric regression with lognormal errors. A new graphical technique is introduced for nonparametric hazard rate estimation with censored data. Models are developed and implemented for forecasting of Poisson arrival rates. Finally, the article surveys how the characteristics deduced from the statistical analyses form the building blocks for theoretically interesting and practically useful mathematical models for call center operations. © 2005 American Statistical Association. |
Persistent Identifier | http://hdl.handle.net/10722/219816 |
ISSN | 2023 Impact Factor: 3.0 2023 SCImago Journal Rankings: 3.922 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Brown, Lawrence | - |
dc.contributor.author | Gans, Noah | - |
dc.contributor.author | Mandelbaum, Avishai | - |
dc.contributor.author | Sakov, Anat | - |
dc.contributor.author | Shen, Haipeng | - |
dc.contributor.author | Zeltyn, Sergey | - |
dc.contributor.author | Zhao, Linda | - |
dc.date.accessioned | 2015-09-23T02:58:01Z | - |
dc.date.available | 2015-09-23T02:58:01Z | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | Journal of the American Statistical Association, 2005, v. 100, n. 469, p. 36-50 | - |
dc.identifier.issn | 0162-1459 | - |
dc.identifier.uri | http://hdl.handle.net/10722/219816 | - |
dc.description.abstract | A call center is a service network in which agents provide telephone-based services. Customers who seek these services are delayed in tele-queues. This article summarizes an analysis of a unique record of call center operations. The data comprise a complete operational history of a small banking call center, call by call, over a full year. Taking the perspective of queueing theory, we decompose the service process into three fundamental components: arrivals, customer patience, and service durations. Each component involves different basic mathematical structures and requires a different style of statistical analysis. Some of the key empirical results are sketched, along with descriptions of the varied techniques required. Several statistical techniques are developed for analysis of the basic components. One of these techniques is a test that a point process is a Poisson process. Another involves estimation of the mean function in a nonparametric regression with lognormal errors. A new graphical technique is introduced for nonparametric hazard rate estimation with censored data. Models are developed and implemented for forecasting of Poisson arrival rates. Finally, the article surveys how the characteristics deduced from the statistical analyses form the building blocks for theoretically interesting and practically useful mathematical models for call center operations. © 2005 American Statistical Association. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of the American Statistical Association | - |
dc.subject | Lognormal distribution | - |
dc.subject | Multiserver queue | - |
dc.subject | Abandonment | - |
dc.subject | Queueing science | - |
dc.subject | Queueing theory | - |
dc.subject | Prediction of Poisson rates | - |
dc.subject | Arrivals | - |
dc.subject | Call center | - |
dc.subject | Censored data | - |
dc.subject | Erlang-A | - |
dc.subject | Erlang-C | - |
dc.subject | Human patience | - |
dc.subject | Inhomogeneous Poisson process | - |
dc.subject | Khintchine-Pollaczek formula | - |
dc.title | Statistical analysis of a telephone call center: A queueing-science perspective | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1198/016214504000001808 | - |
dc.identifier.scopus | eid_2-s2.0-14944380366 | - |
dc.identifier.volume | 100 | - |
dc.identifier.issue | 469 | - |
dc.identifier.spage | 36 | - |
dc.identifier.epage | 50 | - |
dc.identifier.isi | WOS:000233311100005 | - |
dc.identifier.issnl | 0162-1459 | - |