Wei Lin Teoh

2025

A new omnibus SPRT chart for monitoring process mean and variability based on the average number of observations to signal

Teoh, J. W., Teoh, W. L., Hu, X., Tran, K. P. & Godase, D. G., 2 Jan 2025, In: Journal of Statistical Computation and Simulation. 95, 1, p. 49-69 21 p.

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An integrated optimal-GICP design for the SPRT control chart with estimated process parameters based on the average number of observations to signal

Teoh, J. W., Teoh, W. L., Khoo, M. B. C., Tran, K. P. & Lee, M. H., 2 Jan 2025, In: Quality Technology and Quantitative Management. 22, 1, p. 84-104 21 p.

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Enhanced Designs for the Multi-Region Run Sum x̄ Control Chart Based on the Median Run Length Metric

Teoh, W. L., Teoh, J. W., Goh, K. L., Song, Z. & Saha, S., 13 Jan 2025, (E-pub ahead of print) In: Quality and Reliability Engineering International.

Research output: Contribution to journal › Article › peer-review

Optimal design of the side sensitive group runs double sampling (SSGRDS) x̄ scheme with estimated process parameters

Chong, Z. L., Yeong, W. C., Khaw, K. W., Chew, X. & Teoh, W. L., Feb 2025, In: Transactions of the Institute of Measurement and Control. 47, 3, p. 487-505 19 p.

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1 Citation (Scopus)

16 Downloads (Pure)

Optimal Designs of the Group Runs Exponentially Weighted Moving Average X̄ and t Schemes

Chong, Z. L., Teoh, W. L., Khaw, K. W., Chew, X. Y. & Teh, S. Y., 5 Feb 2025, (E-pub ahead of print) In: Quality and Reliability Engineering International.

Research output: Contribution to journal › Article › peer-review

Shewhart Median Scheme with Estimated Process Parameters Using Median Run Length for Smart Manufacturing

Chong, Z. L., Teoh, W. L., Ng, P. S., Yeong, W. C. & Teh, S. Y., 17 Feb 2025, 2024 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE). IEEE, 10877298

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2024

An Airline Passenger Satisfaction Prediction by Genetic-Algorithm-Based Hybrid AutoEncoder and Machine Learning Models

Lee, Y. H., Olanrewaju , V. J., Chew, X., Teoh, W. L., Chong, Z. L. & Khaw, K. W., 23 Jul 2024, In: International Journal of Intelligent Systems and Applications in Engineering. 12, 4, p. 1974-1985 12 p.

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An Analysis of the Performance of the SPRT Chart with Estimated Parameters Under the Weibull Distribution

Teoh, J. W., Teoh, W. L., El-Ghandour, L., Chong, Z. L. & Teh, S. Y., 31 Mar 2024, Proceedings of the 12th International Conference on Robotics, Vision, Signal Processing and Power Applications. Ahmad, N. S., Mohamad-Saleh, J. & Teh, J. (eds.). Springer, p. 175-182 8 p. (Lecture Notes in Electrical Engineering; vol. 1123).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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A Robust Design for the Omnibus SPRT Control Chart Under Skewed Data Distributions

Teoh, J. W., Teoh, W. L., Chong, Z. L., Lee, M. H. & Khaw, K. W., Jun 2024, In: Sains Malaysiana. 53, 6, p. 1441-1461 21 p.

Research output: Contribution to journal › Article › peer-review

Open Access

1 Citation (Scopus)

A study on the performances of the run sum X̄ chart under the gamma process

Goh, K. L., Teoh, W. L., Chong, Z. L., Ong, K. L. & El Ghandour, L., 21 Aug 2024, In: ITM Web of Conferences. 67, 01002.

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A Systematic Review of Artificial Intelligence in Orthopaedic Disease Detection: A Taxonomy for Analysis and Trustworthiness Evaluation

Mohammed, T. J., Xinying, C., Alnoor, A., Khaw, K. W., Albahri, A. S., Teoh, W. L., Chong, Z. L. & Saha, S., Dec 2024, In: International Journal of Computational Intelligence Systems. 17, 1, 303.

Research output: Contribution to journal › Review article › peer-review

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1 Citation (Scopus)

7 Downloads (Pure)

Enhanced distribution-free Cucconi schemes based on runs: An application to the surveillance of daily average customer service time

Lin Chong, Z., Lin teoh, W., Chung Yeong, W., Malela-Majika, J.-C. & Khoo, M. B. C., Nov 2024, In: Computers and Industrial Engineering. 197, 110547.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Optimal designs of the omnibus SPRT control chart for joint monitoring of process mean and dispersion

Teoh, J. W., Teoh, W. L., Khoo, M. B. C., Celano, G. & Chong, Z. L., 17 Jun 2024, In: International Journal of Production Research. 62, 12, p. 4202-4225 24 p.

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7 Citations (Scopus)

2 Downloads (Pure)

Redesigning the Joint SPRT Mean and Dispersion Control Chart Based on Mismatched In-control Performances

Teoh, J. W., Teoh, W. L., El-Ghandour, L., Chong, Z. L. & Teh, S. Y., 14 May 2024, 20th IEEE International Colloquium on Signal Processing and Its Applications 2024. IEEE, p. 12-17 6 p.

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Redesigning the Omnibus SPRT Control Chart for Simultaneous Monitoring of the Mean and Dispersion of Weibull Processes

Teoh, J. W., Teoh, W. L., Chong, Z. L., Chew, X. Y. & Teh, S. Y., 2024, In: International Journal of Integrated Engineering. 16, 5, p. 201-213 13 p.

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Re-Evaluating the SPRT Chart with Estimated Process Parameters When the Underlying Distributions Are Gamma, Lognormal, and Weibull

Teoh, J. W., Teoh, W. L., Chong, Z. L., Lee, M. H. & Teh, S. Y., Jan 2024, In: International Journal of Electrical and Electronic Engineering and Telecommunications . 13, 1, p. 80-89 10 p.

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2 Citations (Scopus)

37 Downloads (Pure)

The multivariate exponentially weighted moving average chart for monitoring short production runs

Lee, M. H., Tan, V. M., Haq, A., Khoo, M. B. C., Chew, X. Y. & Teoh, W. L., 2 Jul 2024, In: Communications in Statistics: Simulation and Computation. 53, 7, p. 3554-3569 16 p.

Research output: Contribution to journal › Article › peer-review

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The One-Sided Variable Sampling Interval Exponentially Weighted Moving Average x̄ Charts Under the Gamma Distribution

Goh, K. L., Teoh, W. L., Teoh, J. W., Chong, Z. L. & Chew, X., Dec 2024, In: Sains Malaysiana. 53, 12, p. 3437-3462 26 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Triple sampling X̄ control chart for gamma process

Mahmood, Y., Khoo, M. B. C., Teh, S. Y., Saha, S. & Teoh, W. L., Dec 2024, In: International Journal of Production Research. 62, 23, p. 8326-8351 26 p.

Research output: Contribution to journal › Article › peer-review

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2 Citations (Scopus)

2023

An Expected Average Run Length (EARL) Performance Comparison of the SSGR and EWMA Control Charts

You, H. W., Chong, Z. L., Teoh, W. L., Khoo, M. B. C. & Yeong, W. C., 2023, In: International Journal of Integrated Engineering. 15, 5, p. 35-40 6 p.

Research output: Contribution to journal › Article › peer-review

Open Access

2 Citations (Scopus)

A Study on the Performances of the SPRT Control Chart When Estimating Process Parameters

Teoh, J. W., Teoh, W. L., El-Ghandour, L., Chong, Z. L. & Teh, S. Y., 27 Apr 2023, Proceedings of the 9th International Conference on Computational Science and Technology. ICCST 2022. Kang, D.-K., Alfred, R., Ismail, Z. I. B. A., Baharum, A. & Thiruchelvam, V. (eds.). Springer, p. 449-463 15 p. (Lecture Notes in Electrical Engineering; vol. 983).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

A Thorough Comparison of the Variable-Sample-Size Weighted-Loss CUSUM and ABS-SPRT Control Charts

Teoh, J. W., Teoh, W. L., El-Ghandour, L., Chong, Z. L. & Teh, S. Y., 3 Jul 2023, 13th IEEE Symposium on Computer Applications & Industrial Electronics 2023. IEEE, p. 268-273 6 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Construction of the Shewhart Median Chart Based on the Expected Percentile Run Length

Chong, Z. L., Teoh, W. L., You, H. W., Yeong, W. C. & Khoo, M. B. C., 6 Sept 2023, 13th IEEE International Conference on Control System, Computing and Engineering (ICCSCE). IEEE, p. 33-38 6 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Proposed variable sampling interval maximum EWMA and distance EWMA charts with unknown process parameters

Parvin, R., Khoo, M. B. C., Saha, S. & Teoh, W. L., Dec 2023, In: Stat. 12, 1, e605.

Research output: Contribution to journal › Article › peer-review

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2 Citations (Scopus)

The effect of measurement error on the performance of the s chart

Lee, M. H., Lee, Z. Y., Teoh, W. L., Tan, V. M., Kong, M. & Chew, X., 19 Dec 2023, International Conference on Mathematical and Statistical Physics, Computational Science, Education and Communication (ICMSCE 2023). Purnama, A. & Arafah, B. (eds.). SPIE, 129361M. (Proceedings of SPIE; vol. 12936).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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2022

Another Look at the VSI EWMA x̄ Chart when Estimating Process Parameters

Teoh, W. L., Khoo, M. B. C., Teh, S. Y., Chong, Z. L., Moy, W. H. & You, H. W., Jul 2022, In: International Journal of Electrical and Electronic Engineering and Telecommunications . 11, 4, p. 269-276 8 p.

Research output: Contribution to journal › Article › peer-review

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Design of the Shewhart Median Scheme with the Percentile-Based Approach

Chong, Z. L., Teoh, W. L., Lim, S. L., Yeong, W. C. & Chew, X. Y., Feb 2022, ICSCA 2022: 11th International Conference on Software and Computer Applications. Association for Computing Machinery, p. 206-211 6 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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1 Citation (Scopus)

2 Downloads (Pure)

New Insights on the SPRT Control Chart when the Process Parameters are Unknown

Teoh, J. W., Teoh, W. L., El-Ghandour, L., Chong, Z. L., Teh, S. Y. & You, H. W., 14 Oct 2022, 5th IEEE International Symposium in Robotics and Manufacturing Automation 2022. IEEE, 9915700

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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On Designing an Optimal SPRT Control Chart with Estimated Process Parameters under Guaranteed In-control Performance

Teoh, J. W., Teoh, W. L., Boon Chong Khoo, M., Castagliola, P. & Moy, W. H., Dec 2022, In: Computers and Industrial Engineering. 174, 108806.

Research output: Contribution to journal › Article › peer-review

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10 Citations (Scopus)

Optimal designs of the exponentially weighted moving average (EWMA) median chart for known and estimated parameters based on median run length

Chong, Z. L., Tan, K. L., Khoo, M. B. C., Teoh, W. L. & Castagliola, P., 3 Jul 2022, In: Communications in Statistics: Simulation and Computation. 51, 7, p. 3660-3684 25 p.

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17 Citations (Scopus)

Run sum control chart for monitoring the ratio of population means of a bivariate normal distribution

Abubakar, S. S., Khoo, M. B. C., Saha, S. & Teoh, W. L., 3 Jul 2022, In: Communications in Statistics - Theory and Methods. 51, 13, p. 4559-4588 30 p.

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6 Citations (Scopus)

2021

A comparative study of the EWMA and double EWMA control schemes

Chan, K. M., Chong, Z. L., Khoo, M. B. C., Khaw, K. W. & Teoh, W. L., 25 Oct 2021, In: Journal of Physics: Conference Series. 2051, 012067.

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4 Citations (Scopus)

26 Downloads (Pure)

A two-sided SPRT control chart for process dispersion

Mahadik, S. B., Godase, D. G. & Teoh, W. L., 2021, In: Journal of Statistical Computation and Simulation. 91, 17, p. 3603-3614 12 p.

Research output: Contribution to journal › Article › peer-review

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14 Citations (Scopus)

1 Downloads (Pure)

2020

Breaking through common obstacles of quality improvement practices using TRIZ

Ng, W. C., Teh, S. Y. & Teoh, W. L., 26 May 2020, Contemporary Issues in Social Sciences: A Compilation of Short Essays. Universiti Pendidikan Sultan Idris, p. 311-317 7 p.

Research output: Chapter in Book/Report/Conference proceeding › Chapter (peer-reviewed) › peer-review

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Optimal design of the modified group runs (MGR) chart when process parameters are estimated

Chong, Z. L., Boon Chong Khoo, M., Teoh, W. L., Yeong, W. C. & Li Lim, S., 2 Jan 2020, In: Communications in Statistics: Simulation and Computation. 49, 1, p. 244-260 17 p.

Research output: Contribution to journal › Article › peer-review

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8 Citations (Scopus)

The expected average run length of the ewma median chart with estimated process parameters

Woon, Y. H., Chong, M. K. B., Lin, C. Z. & Lin, T. W., 3 Apr 2020, In: Austrian Journal of Statistics. 49, 3, p. 19-24 6 p.

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11 Citations (Scopus)

178 Downloads (Pure)

2019

A comparative study between the standard deviation of the time to signal (SDTS) performance of the GR and SSGR schemes

Chong, Z. L., Khoo, M. B. C., You, H. W., Teoh, W. L. & Teh, S. Y., 2019, Proceeding of the 62nd ISI World Statistics Congress 2019: Special Topic Session. Vol. 3. p. 190-197 8 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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5 Downloads (Pure)

An improved variable sample size and sampling interval S control chart

Khoo, M. B. C., See, M. Y., Chong, N. L. & Teoh, W. L., Feb 2019, In: Quality and Reliability Engineering International. 35, 1, p. 392-404 13 p.

Research output: Contribution to journal › Article › peer-review

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18 Citations (Scopus)

A study on the median run length performance of the run sum S control chart

Gao , H., Khoo, M. B. C., Teh, S. Y. & Teoh, W. L., Nov 2019, In: International Journal of Mechanical Engineering and Robotics Research. 8, 6, p. 885-890 6 p.

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4 Citations (Scopus)

85 Downloads (Pure)

Optimal design of the side-sensitive modified group runs (SSMGR) x̄ chart when process parameters are estimated

Chong, Z. L., Khoo, M. B. C., Teoh, W. L., You, H. W. & Castagliola, P., Feb 2019, In: Quality and Reliability Engineering International. 35, 1, p. 246-262 17 p.

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17 Citations (Scopus)

Optimal Designs of EWMA Charts for Monitoring the Coefficient of Variation Based on Median Run Length and Expected Median Run Length

Teoh, W. L., Lim, J. Y., Khoo, M. B. C., Chong, Z. L. & Yeong, W. C., 1 Jan 2019, In: Journal of Testing and Evaluation. 47, 1, p. 459-479 21 p.

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11 Citations (Scopus)

10 Downloads (Pure)

Percentiles of the Run-Length Distribution of the Group Runs Xbar Chart

Chong, Z. L., Khoo, M. B. C., Teoh, W. L., Yeong, W. C. & Lim, S. L., 31 Dec 2019, In: CMS Bulletin. 2019, p. 84-90 7 p.

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The Effects of Skewed Distributions on the Performance of Variable Sample Size X Chart

Teoh, W. L., Khoo, M. B. C., Chong, Z. L. & Teh, S. Y., May 2019, In: International Journal of Electrical and Electronic Engineering and Telecommunications . 8, 3, p. 171-176 6 p.

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1 Citation (Scopus)

193 Downloads (Pure)

The Variable Sampling Interval EWMA X-bar Chart with Estimated Process Parameters

Teoh, W. L., Ong, L. V., Khoo, M. B. C., Castagliola, P. & Chong, Z. L., Jun 2019, In: Journal of Testing and Evaluation. 49, 2, p. 1237-1265 29 p.

Research output: Contribution to journal › Article › peer-review

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6 Citations (Scopus)

4 Downloads (Pure)

2018

Adaptive multivariate double sampling and variable sampling interval Hotelling's T² charts

Khatun, M., Khoo, M. B. C., Yeong, W. C., Teoh, W. L. & Chong, Z. L., Jul 2018, In: Quality and Reliability Engineering International. 34, 5, p. 894-911 18 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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14 Citations (Scopus)

1 Downloads (Pure)

A study on the run length properties of the side sensitive group runs double sampling (SSGRDS) control chart

Chong, N. L., Khoo, M. B. C., Chong, Z. L. & Teoh, W. L., 14 Aug 2018, In: MATEC Web of Conferences. 192, 01005.

Research output: Contribution to journal › Conference article › peer-review

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4 Citations (Scopus)

48 Downloads (Pure)

A study on the variable sampling interval EWMA X chart when the process parameters are unknown

Ong, L. V., Teoh, W. L., Khoo, M. B. C., Chong, Z. L. & Yeong, W. C., 20 Dec 2018, In: Journal of Physics: Conference Series. 1132, 1, 012084.

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1 Citation (Scopus)

45 Downloads (Pure)

Comparing Quality Management Practices Between Food Industry and Electrical and Electronic Industry

Teh, S. Y., Leong, T. P. S., Teoh, W. L. & Soh, K. L., Oct 2018, Proceedings of the 6th International Conference on Management, Leadership and Governance. Red Hook, NY: Academic Conferences International Ltd, p. 326-332 7 p.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Open Access

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2017

Group runs double sampling np control chart for attributes

Chong, Z. L., Khoo, M. B. C., Teoh, W. L., Yeong, W. C. & Teh, S. Y., Nov 2017, In: Journal of Testing and Evaluation. 45, 6, p. 2267-2282 16 p.

Research output: Contribution to journal › Article › peer-review

Open Access

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9 Citations (Scopus)

Monitoring the coefficient of variation using a variable sampling interval ewma chart

Yeong, W. C., Khoo, M. B. C., Tham, L. K., Teoh, W. L. & Rahim, M. A., 21 Nov 2017, In: Journal of Quality Technology. 49, 4, p. 380-401 22 p.

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60 Citations (Scopus)

Wei Lin Teoh

Research output

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