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Connection Science, 2023 This research aims to derive the average run length (ARL) evaluation of the double exponentially weighted moving average (double EWMA) control chart for observation data that follows exponential white noise in a time series model with an autoregressive ...
Kotchaporn Karoon +2 more
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A Simple Approach for Monitoring Business Service Time Variation [PDF]
The Scientific World Journal, 2014 Control charts are effective tools for signal detection in both manufacturing processes and service processes. Much of the data in service industries comes from processes having nonnormal or unknown distributions.
Su-Fen Yang, Barry C. Arnold
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Developing Bayesian EWMA chart for change detection in the shape parameter of Inverse Gaussian process. [PDF]
PLoS OneBayesian Control charts are emerging as the most efficient statistical tools for monitoring manufacturing processes and providing effective control over process variability.
Javed A, Abbas T, Abbas N.
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MAX-EWMA CHART FOR AUTOCORRELATED PROCESSES (MEWMAP CHART)
South African Journal of Industrial Engineering, 2012 <p>ENGLISH ABSTRACT: This paper proposes an exponentially weighted moving average (EWMA) control chart that is capable of detecting changes in both process mean and standard deviation for autocorrelated data (referred to as the Maximum ...
K. Thaga, V.S.S. Yadavalli
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Periodicals of Engineering and Natural Sciences (PEN), 2021 Any production process that needs statistical control to exit the production process as required, whether from the consumer or producer point of view, and in this research a comparison was made between the two control charts of the modified and traditional exponential weighted moving average chart.The modified chart takes into consideration the ...
Aida Hadi Saleh, Nabaa Naeem Mahdi
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A new EWMA chart for simultaneously monitoring the parameters of a shifted exponential distribution. [PDF]
J Appl StatIn various scenarios where products and services are accompanied by warranties to ensure their reliability over a specified time, the two-parameter (shifted) exponential distribution serves as a fundamental model for time-to-event data.
Baranwal A +3 more
europepmc +2 more sources
Performance of Bayesian EWMA control chart with measurement error under ranked set sampling schemes with application in industrial engineering [PDF]
Scientific Reports, 2023 The objective of this study is to investigate the behavior of the Bayesian exponentially weighted moving average (EWMA) control chart in the presence of measurement error (ME).
Yuzhen Wang +5 more
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Development of a VSS-EWMA chart for coefficient of variation with application to production process [PDF]
Scientific ReportsThis study introduces a novel Variable Sample Size Exponentially Weighted Moving Average (VSS-EWMA) control chart for monitoring the coefficient of variation, termed as Dynamic Adaptive CV (DACV) chart. Tailored for dynamic production settings where both
Amna Safeer +2 more
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A machine learning assisted truncated adaptive EWMA chart for robust process monitoring [PDF]
Scientific ReportsThe classical memory-type control charts, Adaptive EWMA (AE) and Truncated Adaptive EWMA (TAE) are chart types whose analytical properties are traditionally derived under normality assumptions, although they can be applied to non-normal data and operate ...
Abdullah A. Zaagan +3 more
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Comparative Analysis Between EWMA, DEWMA and Mixed Tukey EWMA Control Chart
Academic Science Journal, 2023 The control chart is a good tool for monitoring. Single and double exponential weighted moving average control charts are suitable charts to detect small shifts in the process parameters.
Kawa M. Jamal Rashid , Sozan S. Haydar
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