Robust Distribution-Free Hybrid Exponentially Weighted Moving Average Schemes Based on Simple Random Sampling and Ranked Set Sampling Techniques
المؤلف | Malela-Majika, Jean Claude |
المؤلف | Shongwe, Sandile C. |
المؤلف | Aslam, Muhammad |
المؤلف | Abbasi, Saddam A. |
تاريخ الإتاحة | 2022-02-14T08:27:13Z |
تاريخ النشر | 2021-07-27 |
اسم المنشور | Mathematical Problems in Engineering |
المعرّف | http://dx.doi.org/10.1155/2021/4035011 |
الاقتباس | Jean-Claude Malela-Majika, Sandile C. Shongwe, Muhammad Aslam, Saddam A. Abbasi, "Robust Distribution-Free Hybrid Exponentially Weighted Moving Average Schemes Based on Simple Random Sampling and Ranked Set Sampling Techniques", Mathematical Problems in Engineering, vol. 2021, Article ID 4035011, 21 pages, 2021. https://doi.org/10.1155/2021/4035011 |
الرقم المعياري الدولي للكتاب | 1024123X |
المعرّف | 4035011 |
الملخص | This paper proposes new nonparametric hybrid exponentially weighted moving average (HEWMA) control charts based on simple random sampling (SRS) and ranked set sampling (RSS) techniques using the Wilcoxon rank-sum W statistic. The in-control robustness and out-of-control (OOC) performances are thoroughly investigated using extensive simulations. The HEWMA W chart is shown to be superior to the basic exponentially weighted moving average (EWMA) and double EWMA W charts in many cases under normal and nonnormal distributions. Moreover, the OOC sensitivities of the new HEWMA W-type control charts are further improved by using supplementary 2-of-2 and 2-of-3 standard and improved runs-rules approaches. It is found that the proposed HEWMA W-type charts with runs-rules perform better than the basic HEWMA W SRS and RSS charts. Real-life data based on the impurity of iron ore are used to illustrate the design and implementation of the new control charts. |
اللغة | en |
الناشر | Hindawi |
الموضوع | Control Chart Hybrid EWMA ARL |
النوع | Article |
رقم المجلد | 2021 |
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