A New Control Chart Based on Proportional Hazards and Frailty Regression Models for Monitoring High-Quality Processes with Censored Observations – lay abstract

The lay abstract featured today (for A New Control Chart Based on Proportional Hazards and Frailty Regression Models for Monitoring High-Quality Processes with Censored Observations by Elham Keyvani, Shervin Asadzadeh and Yaser Samimi) is from Quality and Reliability Engineering International with the full article now available to read here.

How to cite

Keyvani E, Asadzadeh S, Samimi Y. A new control chart based on proportional hazards and frailty regression models for monitoring high-quality processes with censored observations. Qual Reliab Eng Int. 2024; 124. https://doi.org/10.1002/qre.3662

 

Lay Abstract

In modern industries, ensuring that production processes remain efficient and of high quality is crucial. One key method used to maintain this quality is through control charts, which monitor data over time to detect potential issues early. This research introduces a new type of control chart, which combines advanced statistical models like proportional hazards and frailty regression models. These models allow one to account for both observed and measured factors, as well as hidden or unmeasured factors, that may influence the number of defects in a process. Additionally, these control charts are specifically designed to handle incomplete or censored data, meaning that not all observations are fully captured.

The importance of this study lies in its ability to better monitor high-quality processes, especially when traditional methods struggle with incomplete data. By improving the sensitivity of control charts to subtle changes, industries can detect problems earlier, minimize waste, and maintain a higher standard of quality. This makes the method valuable for sectors like manufacturing, healthcare, and any other fields where precision is essential. Overall, the research contributes to the ongoing development of more sensitive tools for quality control, helping high-quality industries achieve better performance with fewer disruptions.

 

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