Johannes Ledolter

Johannes Ledolter
Robert Thomas Holmes Professor of Business Analytics, Tippie College of Business
Professor of Statistics and Actuarial Science, College of Liberal Arts and Sciences
PhD in Statistics, University of Wisconsin, Madison, 1975
MS in Sociology and Statistics, University of Vienna, Austria, 1974
MS in Statistics, University of Wisconsin, Madison, 1972
Phone: 
(319) 335-3814
Office: 
S352 PBB
Research Interests: 
Time Series Analysis
Data Mining
Forecasting
International Business Education
Probability and statistics for engineering and physical sciences
Statistical applications in business
Statistical methods for quality and productivity improvement (Six Sigma)
Statistics
Statistics in Medicine, especially Anesthesia, Surgery, and Ophthalmology

Online CV
Google Scholar

Selected Awards and Honors

  • Iowa Career Developmental Award, University of Iowa, 2012
  • Elected Fellow, American Society for Quality, 2011
  • Iowa Career Developmental Award, 2006
  • Elected Fellow, American Statistical Association, 1991
  • Elected Fellow, International Statistical Institute, 1991

Selected Publications

  • Ledolter, J. (2009). Estimation Bias in the First-Order Autoregressive Model and its Impact on Predictions and Prediction Intervals. Communications in Statistics: Simulation and Computation, 38, 771-787.
  • Bell, G. H., Ledolter, J. & Swersey, A. J. (2009). An Experiment to Increase Magazine Sales in a Supermarket. Interfaces, 39, 145-158.
  • Dexter, F., Epstein, R. H., Elgart, R. L., Lee, J. D. & Ledolter, J. (2009). Automatic Updating of Times Remaining in Surgical Cases Using Bayesian Analysis of Historical Case Duration Data. Anesthesia & Analgesia, 108, 929-940.
  • Rautianinen, R., Ledolter, J., Donham, K. J., Ohsfeldt, R. & Zwerling, C. (2009). Risk Factors for Serious Injury in Finnish Agriculture. American Journal of Industrial Medicine, 52, 419-428.
  • Ledolter, J., Hogg, R. V. (2009). Statistics for Engineers and Scientists. Prentice Hall.
  • Ledolter, J. (2008). A Statistical Analysis of the Lake Levels at Lake Neusiedl. Austrian Journal of Statistics, 37, 147-160.
  • Dexter, F., Xin, L., O'Neil, L. & Ledolter, J. (2008). Sensitivity of Super-Efficient Data Envelopment Analysis Results to Individual Decision-Making Units: Example of Surgical Workload by Specialty. Health Care Management Science, 11, 307-318.
  • Ledolter, J. (2008). Smoothing Time Series with Local Polynomial Regression on Time. Communications in Statistics - Theory and Methods, 37(6), 959-971.
  • Ledolter, J. (2008). Comment on the paper “An Overview of the Shainin SystemTM for Quality Improvement,” by Stefan H. Steiner, R. Jock MacKay, and John S. Ramberg. Quality Engineering, 20, 38-39.
  • Ledolter, J. (2008). Pre-control. Encyclopedia of Statistics in Quality and Reliability.

Selected Review and Editorial Work

  • Associate Editor, Austrian Journal of Statistics, January 1997
  • Associate Editor, Journal of Forecasting, January 1986
  • Associate Editor, Statistical Modelling: An International Journal, January 2000 - December 2017
  • Associate Editor, Journal of Business and Economic Statistics, August 2012 - August 2015
  • Associate Editor, Quality Engineering, January 2008 - December 2013

Selected Presentations

  • Ledolter, J. (2019, October) How George Box has Shaped my Work as Data Scientist: Treatment of Visual Loss and the Effects of Traumatic Brain Injury. Invited Lecture presented at George Box: 100th Birthday Celebration of the Accidental Statistician, University of Wisconsin - Madison, Madison, Wisconsin.
  • Ledolter, J. (2019, June) Data Science Projects: Treatment of Visual Loss and Effects of Traumatic Brain Injury. Invited Lecture, University of Valparaiso, Chile, Valparaiso, Chile.
  • Ledolter, J. (2018, March) Data Science Projects Treatment of Visual Loss and Effects of Traumatic Brain Injury. Invited Lecture, SOM Yale University,
  • Ledolter, J. (2015, June) Data mining and business analytics with an Application to Forecasting State Unemployment Rates. Lecture presented at National Research University-Higher School of Economics, National Research University-Higher School of Economics, Moscow, Russia.
  • Ledolter, J. (2015, April) Data mining and business analytics. Lecture presented at University of Northern Iowa, Department of Mathematics, University of Northern Iowa, Cedar Falls.
  • Ledolter, J. (2015, March) Data mining and business analytics: Statistical models. Lecture presented at Peking University, Guanghua School of Management, Peking University, Beijing, China.
  • Ledolter, J. (2014, May) George Box’s contributions to time series analysis and forecasting. Lecture presented at Department of Statistics, University of Linz, University of Linz, Linz, Austria.
  • Ledolter, J. (2014, April) Data mining and business analytics with big and small data – it is not always size that matters. Keynote/Plenary Address presented at ASA Milwaukee Chapter, American Statistical Association, Milwaukee, Wisconsin.
  • Ledolter, J. (2013, December) Combination of Forecasts and Bayesian Prediction Bounds for Operating Room Durations, Even for Procedures with Few or No Historical Data. Oral presented at Frontiers of Statistics and Forecasting, Statistics Sinica, Taipei, Taiwan.
  • Ledolter, J. (2013, March) Comments on Statistical Engineering. Oral presented at Stu Hunter Research Conference, Amsterdam, Netherlands.

Selected Grants and Contracts

  • Ledolter, JGrant Research, Basic. Center for the Prevention and Treatment of Visual Loss. Sponsored by VA. Funded. August 1, 2017 - July 31, 2018.
  • Ledolter, JGrant Research, Basic. Center for the Prevention and Treatment of Visual Loss. Sponsored by US Department of Veterans Affairs. Funded. August 1, 2015 - July 31, 2016.
  • Ledolter, JohannesCenter for the Prevention and Treatment of Visual Loss. Sponsored by US Department of Veterans Affairs. Funded. August 1, 2014 - May 31, 2015.
  • Ledolter, JohannesCenter for the Prevention and Treatment of Visual Loss. Sponsored by US Department of Veterans Affairs. Funded. August 1, 2013 - May 31, 2014.
  • Ledolter, Johannes (Principal Investigator) Center for the Prevention and Treatment of Visual Loss. Sponsored by US Department of Veterans Affairs. Funded. August 1, 2012 - December 31, 2012.
  • Ledolter, JohannesCenter for the Prevention and Treatment of Visual Loss. Sponsored by US Department of Veterans Affairs. Funded. May 1, 2011 - August 31, 2011.