A novel earned value management model using Z-number

Mostafa Salari, Morteza Bagherpour, John Wang

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


The earned value management (EVM) model is an essential technique for managing and forecasting project features such as scheduling and cost performances indexes. This paper presents a novel fuzzy earned-value model based on Z-number theory incorporating both the impreciseness of real life conditions and a degree of reliability through considering an expert judgment process. The latter factor has not been used by other researchers in the field. The proposed model provides a reliable assessment for the progress performance of a project and its 'at completion' cost in an uncertain environment. Finally, an illustrative case demonstrates the applicability of the proposed model in real life projects.

Original languageEnglish
Pages (from-to)97-119
Number of pages23
JournalInternational Journal of Applied Decision Sciences
Issue number1
StatePublished - 2014


  • Applied decision
  • Cost control
  • Earned value
  • Estimation process
  • Z-number


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