Nonparametric CUSUM Control Charts and Their Use in Two-Stage SPC Applications

• Autores: Tatevik Ambartsoumian, Daniel R. Jeske
• Localización: Journal of quality technology: A quarterly journal of methods applications and related topics, ISSN 0022-4065, Nº. 3, 47, 2015, págs. 264-277
• Idioma: inglés
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• Resumen

  • This article develops a nonparametric cumulative sum (CUSUM) for sequential monitoring of independent and identically distributed observations when the underlying in-control density is arbitrary and unknown but can be estimated from historical in-control data. The approach utilizes a smooth bootstrap algorithm along with an adaptive nonparametric kernel density estimator to make the CUSUM work for reasonably sized sets of in-control data. The authors discuss how the CUSUM fits into a two-stage SPC algorithm.