FFGan

Education and Work

1998-now Associate Professor
1991-1998 Senior Lecturer
1986-1991 Lecturer
1985 PhD in Statistics, Iowa State University
1982 MSc in Statistics, Iowa State University
1980 BScEd (Honours), University of Malaya

Areas of Research

Statistical Process Control
Risk-Adjusted Monitoring of Surgical Performance
Biostatistics

Publications

  1. Knoth S, Wittenberg, P. and Gan, F. F. “Risk-Adjusted CUSUM Charts Under Model Error,” Statistics in Medicine. 2019. Vol. 38(12), pp. 2206-2218. (https://doi.org/10.1002/sim.8104).
  2. Wittenberg, P., Gan, F. F. and Knoth, S. “A Simple Signaling Rule for Variable Life-adjusted Display Derived from an Equivalent Risk-Adjusted CUSUM Chart,” Statistics in Medicine. 2018. Vol. 37(16), pp. 2455-2473. (https://doi.org/10.1002/sim.7647).
  3. Tang, X. and Gan, F. F. “Risk-adjusted Exponentially Weighted Moving Average Charting Procedure Based on Multi-responses,” 2018. Frontiers in Statistical Quality Control 12, pp. 113-131. Edited by Sven Knoth and Wolfgang Schmid. Berlin-Heidelberg, Germany: Springer Verlag. (Invited presentation).
  4. Gan, F. F., Tang, X., Zhu, Y. and Lim, P. W. “Monitoring the Quality of Cardiac Surgery Based on Three or More Surgical Outcomes Using a New Variable Life-adjusted Display,” International Journal for Quality in Health care. 2017. Vol. 29 (3), pp 427-432.
  5. Tang Xu and Gan, F. F. “Comparing Performance of Surgeons Using Risk-adjusted Procedures,” Statistics in Medicine. 2017. Vol. 36(16), pp 2601-2613. (DOI: 10.1002/sim.7310)
  6. Gan, F. F. 2017. Cumulative Sum (CUSUM) Chart. Wiley StatsRef: Statistics Reference Online. 1–7. Update based on original article by Gan Fah Fatt, Wiley StatsRef: Statistics Reference Online ©2014 John Wiley & Sons, Ltd. Published Online: 15 MAY 2017 DOI: 10.1002/9781118445112.stat04042.pub2
  7. Tang Xu, Gan, F. F. and Zhang, L. “Risk-Adjusted Cumulative Sum Charting Procedure Based on Multi-Responses,” Journal of the American Statistical Association. 2015. Vol.110 (509), pp 16-26. (DOI:10.1080/01621459.2014.960965)
  8. Tang Xu, Gan, F. F. and Zhang, L. “Standardized Mortality Ratio for an Estimated Number of Deaths,” Journal of Applied Statistics. 2015. Vol. 42 (6), pp 1348-1366. (DOI:10.1080/02664763.2014.999653)
  9. Su, Y. J. , Gan, F. F, and Tang Xu. “Optimal Cumulative Sum Charting Procedures Based on Kernel Densities,” Frontiers in Statistical Quality Control 11, pp. 119-134. 2015. Edited by Sven Knoth and Wolfgang Schmid. Berlin-Heidelberg, Germany: Springer Verlag. (Invited presentation)
  10. Zhang, L., Gan, F. F. and Loke, C. K. “Phase I Study of Surgical Performances with Risk-Adjusted Shewhart Control Charts,” Quality Technology and Quantitative Management. 2012. Vol. 9, no. 4, pp 375-382.
  11. Loke, C. K. and Gan, F. F. “Joint Monitoring Scheme for Clinical Failures and Predisposed Risks,” Quality Technology and Quantitative Management. Special Issue in Honour of Professor Shelemyahu Zacks. 2012. Vol. 9, no. 1, pp. 3-21.
  12. Gan, F. F, Lin, L and Loke, C. K. “Risk-adjusted Cumulative Sum Charting Procedures,” Frontiers in Statistical Quality Control 10, pp. 207-225. 2012. Edited by H J Lenz, P Th Wilrich and W Schmid, Berlin-Heidelberg, Germany: Springer Verlag. (Invited presentation)
  13. Gan, F. F. and Tan, Tess. “Risk-Adjusted Number-Between Failures Charting Procedures for Monitoring a Patient Care Process for Acute Myocardial Infarctions,” Health Care Management Science. 2010. Springer Netherlands, Vol. 13, no. 3, pp. 222-233.
  14. Gan, F. F. “Cumulative Sum (CUSUM) Chart,” Encyclopedia of Statistics in Quality and Reliability, UK. 2007. Chichester: John Wiley & Sons, pp. 466-470.
  15. Chang, T. C. and Gan, F. F. “Modified Shewhart Charts for High Yield Processes,” Journal of Applied Statistics, UK. 2007. Vol. 34, no. 7, pp. 857-877.
  16. Chang, T. C. and Gan, F. F. “Monitoring Linearity of Measurement Gauges,” Journal of Statistical Computation and Simulation, USA. 2006. Vol. 76, no. 10, pp. 889-911.
  17. Sim, C. H., Gan, F. F. and Chang, T. C. “Outlier Labeling with Boxplot Procedures”, Journal of the American Statistical Association, USA. 2005. Vol. 100, pp. 642-652.
  18. Chang, T. C. and Gan, F. F. “Shewhart Charts for Monitoring the Variance Components”, Journal of Quality Technology, USA. 2004. Vol. 36, no. 3, pp. 293-308.
  19. Tan, W. D., Gan, F. F. and Chang, T. C. “Using Normal Quantile Plot to Select an Appropriate Transformation to Achieve Normality”, Computational Statistics and Data Analysis, USA. 2004. Vol. 45, pp. 609-619.
  20. Gan, F. F., Ting, K. W. and Chang, T. C. “Interval Charting Schemes for Joint Monitoring of Process Mean and Variance”, Quality and Reliability Engineering International, USA. 2004. Vol. 20, pp. 291-303.
  21. Wong, H. B., Gan, F. F. and Chang T. C. “Designs of Moving Average Control Chart,” Journal of Statistical Computation and Simulation, USA. 2004. Vol. 74, pp. 47-62.
  22. Kuralmani, V, Xie, M., Goh, T. N. Gan, F. F. “A conditional decision procedure for high yield processes,” IIE Transactions, USA. 2002. Vol. 34, pp. 1021-1030.
  23. Chang, T. C. and Gan, F. F. “Cumulative Sum Charts for High Yield Processes,” Statistica Sinica, USA. 2001. Vol. 11, no. 3, pp. 791-805.
  24. Chang, T. C. and Gan, F. F. “Detecting Over Rejection in Testing of Integrated Circuits”, Journal of Quality Technology, USA. 2001. Vol. 33, no. 3, pp. 356-364.
  25. Gan, F. F. and Chang, T. C. “Computing Average Run Lengths of Exponential EWMA Charts”, Journal of Quality Technology, USA. 2000. Vol. 32, no. 2, pp. 183-185.
  26. Gan, F. F. “Joint Monitoring of Process Mean and Variances Based on the Exponentially Weighted Moving Averages”, Statistical Process Monitoring and Optimization, edited by Sung H. Park and G. Geoffrey Vining. STATISTICS: Textbooks and Monographs, Vol. 160, pp. 189-208. New York: Marcel Dekker Inc., 1999 (Invited contribution of a chapter).
  27. Chang, T. C. and Gan, F. F. “Application of Xbar Control Chart with Modified Limits in Process Control”, Quality and Reliability Engineering International, USA. 1999. Vol. 15, pp. 355-362.
  28. Chang, T. C. and Gan, F. F. “Charting Techniques for Monitoring a Random Shock Process”, Quality and Reliability Engineering International, USA. 1999. Vol. 15, pp. 295-301.
  29. Gan, F. F. “Designs of One- and Two-Sided Exponential EWMA Charts”, Journal of Quality Technology, USA. 1998. Vol. 30, no. 1, pp. 55-69.
  30. Gan, F. F. “Joint Monitoring of Process Mean and Variance,” Nonlinear Analysis, Proceedings of the 2nd World Congress of Nonlinear Analysis, USA. 1997. Vol. 30:7, pp. 4017-4024 (Invited paper).
  31. Gan, F. F. “Average Run Lengths for Cumulative Sum Control Charts Under Linear Trend,” Applied Statistics, UK. 1996. Vol. 45, no. 4, pp. 505-512.
  32. Gan, F. F. “Joint Monitoring of Process Mean and Variance Using Exponentially Weighted Moving Average Control Charts,” Technometrics, USA. 1995. Vol. 37, no. 4, pp. 446-453.
  33. Gan, F. F. “Control Charts for Monitoring Process Variance,” International Conference on Statistical Methods and Statistical Computing for Quality and Productivity Improvement (ICSQP ’95), 1995. pp. 809-814. Seoul:ICSQP ’95 Scientific Program Committee and the Korean Statistical Society, August 1995.
  34. Chang, T. C. and Gan, F. F. “Cumulative Sum Control Chart for Monitoring a Process Variance,” Journal of Quality Technology, USA. 1995. Vol. 27, no. 2, pp. 109-119.
  35. Gan, F. F. “An Optimal Design of Cumulative Sum Control Chart Based on Median Run Length,” Communications in Statistics – Simulation and Computation, USA. 1994. Vol. 23, no. 2, pp. 485-503.
  36. Chang, T. C. and Gan, F. F. “Optimal Designs of One-Sided EWMA Charts for Monitoring a Process Variance,” Journal of Statistical Computation and Simulation, USA. 1994. Vol. 49, pp. 33-48.
  37. Gan, F. F. “Design of Optimal Exponential CUSUM Control Charts,” Journal of Quality Technology, USA. 1994. Vol. 26, pp. 109-124.
  38. Gan, F. F. and Choi, K. P. “Computing Average Run Lengths for Exponential CUSUM Schemes,” Journal of Quality Technology, USA. 1994. Vol. 26, pp. 134-143.
  39. Gan, F. F. “Designs of Statistical Quality Control Charts,” American Statistical Association Proceedings of the Section on Quality and Productivity, USA. 1993. pp. 11-15.
  40. Gan, F. F. “An Optimal Design of CUSUM Control Charts for Binomial Counts,” Journal of Applied Statistics, UK. 1993. Vol. 20, pp. 445-460.
  41. Gan, F. F. “The Run Length Distribution of a CUSUM Control Chart,” Journal of Quality Technology, USA. 1993. Vol. 25, pp. 205-215.
  42. Gan, F. F. “Exponentially Weighted Moving Average Control Charts with Reflecting Boundaries,” Journal of Statistical Computation and Simulation, USA. 1993. Vol. 46, pp. 45-67.
  43. Gan, F. F. “An Optimal Design of EWMA Control Charts Based on Median Run Length,” Journal of Statistical Computation and Simulation, USA. 1993. Vol. 45, pp. 169-184.
  44. Gan, F. F. and Koehler, K. J. “A Goodness-of-Fit Test Based on P-P Probability Plots,” Journal of Quality Technology, USA. 1992. Vol. 24, no. 2, pp. 96-102.
  45. Gan, F. F. “CUSUM Control Chart Under Linear Drift,” The Statistician, UK. 1992. Vol. 41, pp. 71-84.
  46. Gan, F. F. “Exact Run Length Distributions for One-Sided Exponential CUSUM Schemes,” Statistica Sinica, USA. 1992. Vol. 2, no. 1, pp. 297-312.
  47. Gan, F. F. “Control Charts Under Linear Trend,” Computer Science and Statistics: Proceedings of the 23rd Symposium on the Interface, USA. 1991. pp. 531-533.
  48. Gan, F. F. “Computing Percentage Points of Run Length of an Exponentially weighted Moving Average Control Chart,” Computer Science and Statistics: Proceedings of the 22nd Symposium on the Interface, USA. 1990. pp. 341-347.
  49. Gan, F. F. “An Optimal Design of CUSUM Quality Control Charts,” Journal of Quality Technology, USA. 1991. Vol. 23, no. 4, pp. 279-286.
  50. Gan, F. F. “EWMA Control Chart Under Linear Drift,” Journal of Statistical Computation and Simulation, USA. 1991. Vol. 38, pp. 181-200.
  51. Gan, F. F., Koehler, Kenneth J. and Thompson, John C. “Probability Plots and Distribution Curves for Assessing the Fit of Probability Models,” The American Statistician, USA. 1991. Vol. 45, no. 1, pp. 14-21.
  52. Gan, F. F. “Computing the Percentage Points of the Run Length Distribution of an Exponentially Weighted Moving Average Control Chart,” Journal of Quality Technology, USA. 1991. Vol. 23, no. 4, pp. 359-365.
  53. Gan, F. F. “Review of Statistical Process Control in Automated Manufacturing – Edited by J. B. Keats and N. F. Hubele,” Journal of Official Statistics, Sweden. 1990. Vol. 6, no. 4, pp. 462-464.
  54. Koehler, Kenneth J. and Gan, F. F. “Chi-Squared Goodness-of-Fit Tests: Cell Selection and Power,” Communications in Statistics – Simulation and Computation, USA. 1990. Vol. 19, no. 4, pp. 1265-1278.
  55. Gan, F. F. “Monitoring Observations Generated From a Binomial Distribution Using Modified Exponentially Weighted Moving Average Control Chart,” Journal of Statistical Computation and Simulation, USA. 1990. Vol. 37, pp. 45-60.
  56. Gan, F. F. “Monitoring Poisson Observations Using Modified Exponentially Weighted Moving Average Control Charts,” Communications in Statistics – Simulation and Computation , USA. 1990. Vol. 19, no. 1, pp. 103-124.
  57. Gan, F. F. and Koehler, Kenneth J. “Goodness-of-fit Tests Based on P-P Probability Plots,” Technometrics , USA. 1990. Vol. 32, no. 3, pp. 289-303.
  58. Gan, F. F. “Combined Mean and Variance Control Charts,” Annual Technical Conference Transactions of the American Society for Quality Control , USA. 1989. pp. 129-139.
  59. Gan, F. F. “Combined Cumulative Sum and Shewhart Variance Charts,” Journal of Statistical Computation and Simulation, USA. 1989. Vol. 32, pp. 149-163.

PhD Students Supervised

  1. Tang Xu (2014)
  2. Loke Chok Kang (2010)
  3. Chang Tee Chin (1999)

Awards

  1. 2017 30 Years Long Service Award, NUS.
  2. 2013 Long Service Medal, Awarded by the President of the Republic of Singapore.
  3. 2012 25 Years Long Service Award,  NUS.
  4. 2007/2008 Faculty Teaching Excellence Award, Faculty of Science, NUS.
  5. 2007 20 Years Long Service Award,  NUS.
  6. 2003/2005 Faculty Teaching Excellence Award – Honour Roll.
  7. 2003/2004 Excellent Teacher Award, NUS.
  8. 2003 Faculty Teaching Excellence Award, Faculty of Science, NUS.
  9. 2002 15 Years Long Service Award,  NUS.
  10. 2002 Faculty Teaching Excellence Award, Faculty of Science, NUS.
  11. 2001/2002 University Excellent Teachers, NUS.
  12. 2001 Faculty Teaching Excellence Award, Faculty of Science, NUS.
  13. 2000 Meritorious Teaching Award, Faculty of Science, NUS.
  14. 1999 Meritorious Teaching Award, Faculty of Science, NUS.
  15. 1998 Meritorious Teaching Award, Faculty of Science, NUS.
  16. 1998 Teaching Excellence Award, National University of Singapore.
  17. 1997 10 Years Long Service Award, NUS.