Monitoring logistic profiles using variable sample interval approach

M Mohammadzadeh, A Yeganeh… - Computers & Industrial …, 2021‏ - Elsevier
Investigation the stability of the relationship between a response variable and one or more
independent variables over time is termed as profile monitoring. In the area of profile …

ArrayUDF: User-defined scientific data analysis on arrays

B Dong, K Wu, S Byna, J Liu, W Zhao… - Proceedings of the 26th …, 2017‏ - dl.acm.org
User-Defined Functions (UDF) allow application programmers to specify analysis operations
on data, while leaving the data management tasks to the system. This general approach …

A direct procedure for monitoring the coefficient of variation using a variable sample size scheme

WC Yeong, MBC Khoo, SL Lim… - … in Statistics-Simulation …, 2017‏ - Taylor & Francis
ABSTRACT A variable sample size (VSS) scheme directly monitoring the coefficient of
variation (CV), instead of monitoring the transformed statistics, is proposed. Optimal chart …

The variable sampling interval run sum X‾ control chart

XY Chew, MBC Khoo, SY Teh, P Castagliola - Computers & Industrial …, 2015‏ - Elsevier
Traditional control charts for process monitoring are based on taking samples from the
process at fixed length sampling intervals. More recently, research works focused on the use …

New run sum t charts with variable sampling intervals for process mean

FN Mim, MBC Khoo, S Saha, A Haq - Communications in Statistics …, 2022‏ - Taylor & Francis
The t chart is commonly used as an alternative to the Shewhart mean chart when the
process standard deviation is not known in advance. In this paper, we develop variable …

An effective multivariate control chart for detecting small mean shifts using support vector data description

B **a, Z Jian, L Liu, L Li - Advances in Mechanical …, 2018‏ - journals.sagepub.com
Conventional multivariate cumulative sum control charts are more sensitive to small shifts
than T 2 control charts, but they cannot get the knowledge of manufacturing process through …

Monitoring of linear profiles using generalized likelihood ratio control chart with variable sampling interval

F Hafez Darbani, A Shadman - Quality and Reliability …, 2018‏ - Wiley Online Library
The usual practice in using a control chart to monitor a profile is to take samples from the
process with fixed sampling intervals. This article considered the use of generalized …

Some monitoring procedures related to asymmetry parameter of Azzalini's skew-normal model

LI Chenglong, A Mukherjee, SU Qin… - REVSTAT Statistical …, 2019‏ - scholars.cityu.edu.hk
In the real world, we often observe that the underlying distribution of some Gaussian
processes tends to become skewed, when some undesirable assignable cause takes place …

An effective combined multivariate control chart based on support vector data description

B **a, Z Jian, N Tao - Journal of Ambient Intelligence and Humanized …, 2019‏ - Springer
Conventional multivariate control charts usually focus on a specific process shifts range
(small or large), and they cannot get the knowledge of manufacturing process through the …

Combined double sampling and variable sampling interval np chart

MH Lee, MBC Khoo - Communications in Statistics-Theory and …, 2017‏ - Taylor & Francis
ABSTRACT A combined double sampling and variable sampling interval (DSVSI) np chart is
investigated in this study. The optimal design of the DSVSI np chart is based on minimizing …