Multivariate time between events control charts for Gumbel's bivariate exponential distribution with estimated parameters

P Chen, C He, B Liu, J Zhang - Journal of Statistical Computation …, 2024 - Taylor & Francis
The traditional approach of statistical process control is to estimate the in-control parameters
from reference samples obtained in Phase I and then apply them to Phase II monitoring …

Copula-based multivariate control charts for monitoring multiple dependent Weibull processes

P Chen, J Zhang - Communications in Statistics-Simulation and …, 2024 - Taylor & Francis
Monitoring multivariate time between events (MTBE) data is critical in areas such as
manufacturing and service operations. Monitoring of multiple dependent Weibull processes …

One-sided and two one-sided multivariate homogeneously weighted moving charts for monitoring process mean

NA Adegoke, M Riaz, KO Ganiyu, SA Abbasi - IEEE Access, 2021 - ieeexplore.ieee.org
Multivariate memory-type control charts that use information from both the current and
previous process observations have been proposed. They are designed to detect shifts in …

How to find the variables causing outliers in a multivariate autocorrelated process control: a study in simulation and an extruder machine

RM Ueda, AM Souza - The International Journal of Advanced …, 2022 - Springer
Conventional multivariate control charts (MCCs) have difficulties finding the responsible
variable for an outlier in the manufacturing system in which the variables have …

A real‐time monitoring approach for bivariate event data

IM Zwetsloot, T Mahmood, FM Taiwo… - … Stochastic Models in …, 2023 - Wiley Online Library
Early detection of changes in the frequency of events is an important task in many fields,
such as disease surveillance, monitoring of high‐quality processes, reliability monitoring …

Copula-based multivariate EWMA control charts for monitoring the mean vector of bivariate processes using a mixture model

H Ahmad, M Amini, BS Gildeh… - … in Statistics-Theory and …, 2024 - Taylor & Francis
Control charts are the main tools in the statistical process monitoring area to investigate how
the quality of production remains stable or changes over the time. This article develops …

[PDF][PDF] Remodeling Multivariate Control Chart by Using Spatial Signed Rank for Detecting Mean Shift in Normal and Non-Normal Processes

T Haanchumpol, C Sermpongpan - Thailand Statistician, 2023 - academia.edu
This research aimed to modify the traditional multivariate control charts by using the
multivariate spatial signed rank under the normal distribution, the t distribution, and the …