Tools for Attribute VSI CUSUM Control Chart

An implementation of tools for design of attribute variable sampling interval cumulative sum chart. It currently provides information for monitoring of mean increase such as average number of sample to signal, average time to signal, a matrix of transient probabilities, suitable control limits when the data are (zero inflated) Poisson/binomial distribution. Functions in the tools can be easily applied to other count processes. Also, tools might be extended to more complicated cumulative sum control chart. We leave these issues as our perpetual work.

attrCUSUM is tools for statistical design of attribute VSI CUSUM chart. It currently provides informations on monitoring of mean increase including

  • Average number of sample to signal (ANSS).
  • Computation of suitable control limits for fixed sampling interval (FSI) scheme.
  • Computation of the longer sampling interval for variable sampling interval (VSI) scheme.
  • Average time to signal (ATS).
  • A matrix of transition probabilities for Markov chain approach.

These tools might be extended to more complicated CUSUM control chart and we leave these issues as our future works.


Get the released version from CRAN:



Reference manual

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0.1.0 by Hanwool Kim, 2 years ago

Browse source code at

Authors: Hanwool Kim [aut, cre] , Sangyeol Lee [aut]

Documentation:   PDF Manual  

GPL (>= 2) license

Imports Rcpp, stats, utils

Suggests testthat, knitr, rmarkdown

Linking to Rcpp, RcppArmadillo

See at CRAN