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Performance Analysis of Call Centers using Retrial Queues and Its Application to Service Science

Research Project

Project/Area Number 24810005
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Social systems engineering/Safety system
Research InstitutionTokyo Institute of Technology

Principal Investigator

PHUNG-DUC Tuan  東京工業大学, 情報理工学(系)研究科, 助教 (20633465)

Project Period (FY) 2012-08-31 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsコールセンター / 待ち行列 / サービス科学 / 待ち行列理論 / 再試行型待ち行列 / 途中放棄 / 混合型コールセンター / サービスシステム / 性能評価 / 準出生死滅過程
Research Abstract

Call center is a channel for two way communication between a company and its customers. The main cost for call center is due to the labor cost of operators. Thus, and it is important for companies to manage operators in a cost-effective manner, keeping a high quality of customer service. In this project, we develop several queueing models and analyze them in order to find the cost and performance trade-off in call centers taking into account the behaviors of customers as well as of operators such as retrials, abandonment and after-call work.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Annual Research Report
  • Research Products

    (37 results)

All 2014 2013 2012 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (26 results) (of which Invited: 2 results) Remarks (2 results)

  • [Journal Article] An Efficient Method for Performance Analysis of Blended Call Centers with Redial2014

    • Author(s)
      Phung-Duc, T., and Kawanishi, K.
    • Journal Title

      Asia-Pacific Journal of Operational Research

      Volume: Vol. 31, No. 2, 1440008 Pages: 33-33

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Multiserver Retrial Queues with Two Types of Nonpersistent Customers2014

    • Author(s)
      Phung-Duc, T.
    • Journal Title

      Asia-Pacific Journal of Operational Research

      Volume: Vol. 31, No. 2, 1440009 Pages: 27-27

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Single Server Retrial Queues with Two Way Communication2013

    • Author(s)
      Artalejo, J.R., and Phung-Duc, T.
    • Journal Title

      Applied Mathematical Modelling

      Volume: Vol. 37, No. 4 Pages: 1811-1822

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] A Matrix Continued Fraction Approach to Multiserver Retrial Queues2013

    • Author(s)
      Phung-Duc, T., Masuyama, H., Kasahara, S., and Takahashi, Y.
    • Journal Title

      Annals of Operations Research

      Volume: Vol. 202, No. 1 Pages: 161-183

    • NAID

      120005241236

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] A Matrix Continued Fraction Approach to Multiserver Retrial Queues2013

    • Author(s)
      Tuan Phung-Duc, Hiroyuki Masuyama, Shoji Kasahara, and Yutaka Takahashi
    • Journal Title

      Annals of Operations Research

      Volume: vol. 202, no. 1 Issue: 1 Pages: 161-183

    • DOI

      10.1007/s10479-011-0840-4

    • NAID

      120005241236

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Single Server Retrial Queues with Two Way Communication2013

    • Author(s)
      Artalejo, J.R.
    • Journal Title

      Applied Mathematical Modelling

      Volume: 37 Issue: 4 Pages: 1811-1822

    • DOI

      10.1016/j.apm.2012.04.022

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Markovian Retrial Queues with Two Way Communication2012

    • Author(s)
      Artalejo, J.R.
    • Journal Title

      Journal of Industrial and Management Optimization

      Volume: 8 Issue: 4 Pages: 781-806

    • DOI

      10.3934/jimo.2012.8.781

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Retrial Queues with Balanced Call Blending : Analysis of Single-Server and Multiserver Model

    • Author(s)
      Phung-Duc, T., Rogiest, W., Takahashi, Y., and Bruneel, H.
    • Journal Title

      Published Online First in Annals of Operations Research

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Performance Analysis of Call Centers with Abandonment, Retrial and After-Call Work

    • Author(s)
      Phung-Duc, T., and Kawanishi, K.
    • Journal Title

      Published Online First in Performance Evaluation

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Presentation] 外部処理がある単一サーバ再試行型待ち列の漸近解析2014

    • Author(s)
      櫻井洋之,フン・ドックトゥアン
    • Organizer
      日本オペレーションズ・リサーチ学会2014年春季研究発表会
    • Related Report
      2013 Final Research Report
  • [Presentation] Asymptotic Analysis for Markovian Retrial Queues with Two Types of Nonpersistent Customers2014

    • Author(s)
      Phung-Duc, T.
    • Organizer
      2013年度確率モデルシンポジウム
    • Place of Presentation
      東京理科大学,森戸記念館(東京)
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Asymptotic and Numerical Analysis of Multiserver Retrial Queue with Guard Channel for Cellular Networks2014

    • Author(s)
      Kajiwara, K. and Phung-Duc, T.
    • Organizer
      Proceedings of MAM8
    • Place of Presentation
      NIT Calicut, Kerala, India
    • Related Report
      2013 Final Research Report
  • [Presentation] Asymptotic and Numerical Analysis of Multiserver Retrial Queue with Guard Channel for Cellular Networks2014

    • Author(s)
      Kajiwara, K. and Phung-Duc, T.
    • Organizer
      Proceedings of the Eight International Conference on Matrix-Analytic Methods in Stochastic Models (MAM8)
    • Place of Presentation
      NIT Calicut, Kerala, India
    • Related Report
      2013 Annual Research Report
  • [Presentation] Queueing Analysis of Power Consumption in Server Farm with Independent Setup Times2013

    • Author(s)
      Hu, J., Phung-Duc, T., and Miyoshi, N.
    • Organizer
      日本オペレーションズ・リサーチ学会2013年秋季研究発表会
    • Place of Presentation
      徳島 (1-B-3)
    • Related Report
      2013 Final Research Report
  • [Presentation] Single Server Markovian Retrial Queues with Multiple Types of Outgoing Calls2013

    • Author(s)
      Sakurai, H., and Phung-Duc, T.
    • Organizer
      Proceedings of The 8th International Conference on Queueing Theory and Network Applications (QTNA 2013)
    • Place of Presentation
      Taichung, Taiwan
    • Related Report
      2013 Final Research Report
  • [Presentation] Factorial Approach for the Study of the Infinite Server Queue with Synchronized Reneging2013

    • Author(s)
      Kapodistria, S., Resing, J.A.C., Phung-Duc, T.
    • Organizer
      17th INFORMS Applied Probability Society Conference
    • Place of Presentation
      Costa Rica
    • Related Report
      2013 Final Research Report
  • [Presentation] An Asymptotic Analysis for Multiserver Retrial Queues with Two Types of Non-persistent Customers2013

    • Author(s)
      Phung-Duc, T.
    • Organizer
      26th EURO - INFORMS Joint International Conference
    • Place of Presentation
      Roma, Italia
    • Related Report
      2013 Final Research Report
  • [Presentation] 自動音声応答装置と顧客の再呼があるインターネット・コールセンタの性能解析2013

    • Author(s)
      Hashizume, K., Phung-Duc, T., Kasahara, S., and Takahashi, Y.
    • Organizer
      IEICE Technical Report
    • Place of Presentation
      沖縄
    • Related Report
      2013 Final Research Report
  • [Presentation] 複数種類のoutgoing callを持つ単一サーバ再試行型待ち行列の解析2013

    • Author(s)
      Sakurai, H., and Phung-Duc, T.
    • Organizer
      2012年度日本OR学会春季発表会
    • Place of Presentation
      東京
    • Related Report
      2013 Final Research Report
  • [Presentation] Analysis of a Retrial Queue for Internet-Based Call Centers with Interactive Voice Response2013

    • Author(s)
      Hashizume, K., Phung-Duc, T., Kasahara, S., and Takahashi, Y.
    • Organizer
      第31回待ち行列シンポジウム:確率モデルとその応用
    • Place of Presentation
      長崎
    • Related Report
      2013 Final Research Report
  • [Presentation] 専用サーバと共用サーバを持つ再試行型待ち行列の漸近解析2013

    • Author(s)
      Kajiwara, K., and Phung-Duc, T.
    • Organizer
      第31回待ち行列シンポジウム:確率モデルとその応用
    • Place of Presentation
      長崎
    • Related Report
      2013 Final Research Report
  • [Presentation] Queueing Models with Both Linear and Binomial Transition Rates2013

    • Author(s)
      Phung-Duc, T., Kapodistria S., and Resing, J.
    • Organizer
      第31回待ち行列シンポジウム:確率モデルとその応用
    • Place of Presentation
      長崎
    • Related Report
      2013 Final Research Report
  • [Presentation] Single Server Markovian Retrial Queues with Multiple Types of Outgoing Calls2013

    • Author(s)
      Sakurai, H., and Phung-Duc, T.
    • Organizer
      The 8th International Conference on Queueing Theory and Network Applications (QTNA 2013)
    • Place of Presentation
      Taichung, Taiwan
    • Related Report
      2013 Annual Research Report
  • [Presentation] Perturbation Analysis of Multiserver Retrial Queues2012

    • Author(s)
      Phung-Duc, T.
    • Organizer
      Young European Queueing Theorists (YEQT-VI): Workshop on Analytic Methods in Queueing Systems
    • Place of Presentation
      Eindhoven University of Technology, Eindhoven, The Netherlands
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Queueing Analysis of Internet-Based Call Centers with Interactive Voice Response and Redial2012

    • Author(s)
      Hashizume, K., Phung-Duc, T., Kasahara, S., and Takahashi, Y.
    • Organizer
      Proceedings of IEEE 17^<th> CAMAD
    • Place of Presentation
      Barcelona, Spain
    • Related Report
      2013 Final Research Report
  • [Presentation] 2方向通信再呼待ち行列の行列解析法による別解2012

    • Author(s)
      Phung-Duc, T., and Kawanishi, K.
    • Organizer
      2012年度日本OR学会秋季発表会
    • Place of Presentation
      名古屋
    • Related Report
      2013 Final Research Report
  • [Presentation] Quantifying the Call Blending Balance in Two Way Communication Retrial Queues : Analysis of Correlation2012

    • Author(s)
      Rogiest, W. and Phung-Duc, T.
    • Organizer
      The 7th QTNA (Organized session by Phung-Duc, T.)
    • Place of Presentation
      Kyoto, Japan
    • Related Report
      2013 Final Research Report
  • [Presentation] Modelling of Retrial, Abandonment and After-Call Work in Call Centers2012

    • Author(s)
      Phung-Duc, T. and Kawanishi, K.
    • Organizer
      The 7th International Conference on Queueing Theory and Network Applications (QTNA2012)
    • Place of Presentation
      Kyoto, Japan
    • Related Report
      2013 Final Research Report
  • [Presentation] Numerical Analysis of M/M/c/K+M Retrial Queue with Losses2012

    • Author(s)
      Phung-Duc, T.
    • Organizer
      9th International Workshop on Retrial Queues (WRQ)
    • Place of Presentation
      Sevilla, Spain
    • Related Report
      2013 Final Research Report
  • [Presentation] On the M/G/1 Retrial Queue with Two-way Communication2012

    • Author(s)
      Artalejo, J.R., and Phung-Duc, T.
    • Organizer
      9^<th> WRQ
    • Place of Presentation
      Sevilla, Spain
    • Related Report
      2013 Final Research Report
  • [Presentation] The Impact of Retrial Phenomenon on Performance of Blended Call Centers2012

    • Author(s)
      Phung-Duc, T. and Kawanishi, K.
    • Organizer
      9th WRQ
    • Place of Presentation
      Sevilla, Spain
    • Related Report
      2013 Final Research Report
  • [Presentation] Queueing Models with both Linear and Binomial Transition Rates (Part 1)2012

    • Author(s)
      Phung-Duc, T. and Resing, J., Kapodistria S., and Economou A.
    • Organizer
      9th WRQ
    • Place of Presentation
      Sevilla, Spain
    • Related Report
      2013 Final Research Report
  • [Presentation] Queueing Models with both Linear and Binomial Transition Rates (Part 2)2012

    • Author(s)
      Phung-Duc, T. and Resing, J., Kapodistria S., and Economou A.
    • Organizer
      9th WRQ
    • Place of Presentation
      Sevilla, Spain
    • Related Report
      2013 Final Research Report
  • [Presentation] Two Way Communication Retrial Queues with Balanced Call Blending2012

    • Author(s)
      Phung-Duc, T., and Rogiest, W.
    • Organizer
      Proceedings of 19th International Conference on Analytical and Stochastic Modeling Techniques and Applications, ASMTA 2012
    • Place of Presentation
      Grenoble, France (Lecture Notes in Computer Science 7314 Springer)
    • Related Report
      2013 Final Research Report
  • [Presentation] Queueing Analysis of Internet-Based Call Centers with Interactive Voice Response and Redial2012

    • Author(s)
      Tuan Phung-Duc
    • Organizer
      IEEE 17th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks
    • Place of Presentation
      Barcelona, Spain
    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.is.titech.ac.jp/~tuan/

    • Related Report
      2013 Final Research Report
  • [Remarks] http://www.is.titech.ac.jp/~tuan/

    • Related Report
      2012 Annual Research Report

URL: 

Published: 2012-11-27   Modified: 2019-07-29  

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