Distribution-free cumulative sum control charts using bootstrap-based control limits

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

This paper deals with phase II, univariate, statistical process control when a set of in-control data is available, and when both the in-control and out-of-control distributions of the process are unknown. Existing process control techniques typically require substantial knowledge about the in-control and out-of-control distributions of the process, which is often difficult to obtain in practice. We propose (a) using a sequence of control limits for the cumulative sum (CUSUM) control charts, where the control limits are determined by the conditional distribution of the CUSUM statistic given the last time it was zero, and (b) estimating the control limits by bootstrap. Traditionally, the CUSUM control chart uses a single control limit, which is obtained under the assumption that the in-control and out-of-control distributions of the process are Normal. When the normality assumption is not valid, which is often true in applications, the actual in-control average run length, defined to be the expected time duration before the control chart signals a process change, is quite different from the nominal in-control average run length. This limitation is mostly eliminated in the proposed procedure, which is distribution-free and robust against different choices of the in-control and out-of-control distributions.

Original languageEnglish (US)
Pages (from-to)349-369
Number of pages21
JournalAnnals of Applied Statistics
Volume3
Issue number1
DOIs
StatePublished - Mar 1 2009

Fingerprint

Cumulative Sum
Distribution-free
Control Charts
Bootstrap
Average Run Length
Control charts
Cumulative sum
Statistical Process Control
Statistical process control
Conditional Distribution
Process Control
Normality

Keywords

  • Cumulative sum control charts
  • Distribution-free procedures
  • Nonparametric model
  • Resampling
  • Robustness
  • Statistical process control

Cite this

Distribution-free cumulative sum control charts using bootstrap-based control limits. / Chatterjee, Singdhansu B; Qiu, Peihua.

In: Annals of Applied Statistics, Vol. 3, No. 1, 01.03.2009, p. 349-369.

Research output: Contribution to journalArticle

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