As product quality has increased rapidly in recent years, monitoring and control of products
have become more and more difficult. The items were produced with zero defects, and zero …

In this study, we review a recent progress regarding the change point test for integer-valued
time series models, specifically concentrating on the CUSUM test for integer-valued …

In this study, we consider an on-line monitoring procedure to detect a parameter change in
general time series models, featuring location-scale heteroscedastic time series models and …

There has been a growing interest in monitoring processes featuring serial dependence and
zero inflation. The phenomenon of excessive zeros often occurs in count time series …

Control charts are widely used for monitoring quality characteristics of high-yield processes.
In such processes where a large number of zero observations exists in count data, the zero …

This study considers statistical inferences such as parameter estimation and change tests for
counts time series models where the conditional density of present observations over past …

Many researchers employed Poisson distribution-based control charts to monitor count data.
Nevertheless, these charts can handle count data that deviate from the Poisson assumption …

In this study, we consider an online monitoring procedure to detect a parameter change for
integer-valued generalized autoregressive heteroscedastic (INGARCH) models whose …

In this study, we consider integer-valued autoregressive conditional heteroscedastic
(INGARCH) time series models of counts whose conditional density follows an multiple …

In this work, we study upper-sided cumulative sum control charts that are suitable for
monitoring geometrically inflated Poisson processes. We assume that a process is properly …