Approximate confidence interval for generalized Taguchi process capability index

Abbas Parchami, Mashaallah Mashinchi, M. Hadi Mashinchi

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

9 Citations (Scopus)


The impreciseness happens in the quality control same as other statistical problems. In quality control where specification limits are better expressed by fuzzy sets, the generalized process capability indices C ∼p, C ∼pk and C ∼pm can be helpful and necessary for measuring the capability. We propose a generalized form of Taguchi index C ∼pm to assess the ability of the fuzzy process to be clustered around the target value. An approximate 100(1-γ)% confidence interval for the generalized process capability index C ∼pm by using fuzzy specification limits is also presented.
Original languageEnglish
Title of host publicationFUZZ-IEEE 2011
Subtitle of host publication2011 IEEE International Conference on Fuzzy Systems : proceedings : Grand Hyatt Taipei, Taipei, Taiwan, June 27-30, 2011
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Print)9781424473175
Publication statusPublished - 2011
EventInternational Conference on Fuzzy Systems - Taipei, Taiwan
Duration: 27 Jun 201130 Jun 2011


ConferenceInternational Conference on Fuzzy Systems
CityTaipei, Taiwan


  • Confidence interval cmponent
  • Fuzzy quality
  • Taguchi process capability index


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