Optimization models for quality and cost of modular software systems

Ho Won Jung, Byoungju Choi

Research output: Contribution to journalArticlepeer-review

87 Scopus citations


This study presents two optimization models for selecting the best Commercial Off-The-Shelf (COTS) software product among alternatives for each module in the development of modular software systems. The objective function of the models is to maximize quality within a budgetary constraint. The software system consists of several programs, where a specific function of each program can call upon a series of modules. Several alternative COTS products are available for each module. A weight to the modules is given by utilizing the Analytic Hierarchy Process (AHP) based on the access frequencies of the modules. A simplified example is given to demonstrate each optimization model.

Original languageEnglish
Pages (from-to)613-619
Number of pages7
JournalEuropean Journal of Operational Research
Issue number3
StatePublished - 1 Feb 1999


  • AHP
  • COTS products
  • Quality optimization
  • Software system


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