Coupled task scheduling with exact delays: Literature review and models

Mostafa Khatami, Amir Salehipour, T. C.E. Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)


The coupled task scheduling problem concerns scheduling a set of jobs, each with at least two tasks and there is an exact delay period between two consecutive tasks, on a set of machines to optimize a performance criterion. While research on the problem dates back to the 1980s, interests in the computational complexity of variants of the problem and solution methodologies have been evolving in the past few years. This motivates us to present an up-to-date and comprehensive literature review on the topic. Aiming to provide a complete road map for future research on the coupled task scheduling problem, we discuss all the relevant studies and potential research opportunities. In addition, we propose several sets of benchmark instances for the problem in various settings and provide a detailed evaluation of all the available mathematical models with a view to facilitating future research on the solution methods.

Original languageEnglish
Pages (from-to)19-39
Number of pages21
JournalEuropean Journal of Operational Research
Issue number1
Publication statusPublished - 1 Apr 2020


  • Benchmark instances
  • Coupled task
  • Scheduling
  • Shop setting
  • Single-machine

ASJC Scopus subject areas

  • Computer Science(all)
  • Modelling and Simulation
  • Management Science and Operations Research
  • Information Systems and Management


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